Page 1 RXT-3900 e-Manual D07-00-111P Rev A00...
Page 2: Table Of Contents
RXT-3900 e-Manual D07-00-111P Rev A00 Table of Contents 1.0 About This User Manual 2.0 Introduction 3.0 Safety Information 4.0 Basic Operations 4.1 Connector Panels & Test Ports 5.0 Utilities 6.0 Setup 6.1 Signal Overview 6.2 Setup: SDH 6.2.1 Transmitter Setup 6.2.2 Receiver Setup 6.3 Setup: SONET 6.3.1 Transmitter Setup...
Page 3 RXT-3900 e-Manual D07-00-111P Rev A00 7.1 Results: SDH 7.1.1 Summary 7.1.2 Errors and Alarms 7.1.3 Event Log 7.1.4 Signal 7.1.5 Histogram 7.1.6 Graph 7.1.7 Performance Analysis 7.1.8 SDT Results 7.2 Results: SONET 7.2.1 Summary 7.2.2 Errors and Alarms 7.2.3 Event Log 7.2.4 Signal 7.2.5 Histogram 7.2.6 Graph...
Page 4 RXT-3900 e-Manual D07-00-111P Rev A00 8.1.1 PDH Alarms 8.1.2 SONET Alarms 8.1.3 OTN Alarms 8.2 Error Insertion 8.2.1 Pattern Errors 8.2.2 SONET Errors 8.2.3 OTN Errors 9.0 OTN Tools 9.1 OTN Tools Shortcuts 9.2 Overhead Analyzer & Generator 9.2.1 OTN Frame Analysis 9.2.2 Optical Transport Unit (OTU) Analysis 9.2.3 Optical Data Unit (ODU) Analysis 9.2.4 Optical Payload Unit (OPU) Analysis...
Page 5 RXT-3900 e-Manual D07-00-111P Rev A00 10.1.5.2 Received Traces (RX) 10.1.6 Payload Labels 10.1.7 APS Testing 10.1.8 Tributary Scan 10.1.9 Tandem Connection Monitoring (TCM) 10.1.10 Round Trip Delay 10.2 SONET Tools 10.2.1 SONET Tools Home icons 10.2.2 Overhead Analyzer 10.2.3 Overhead Generator 10.2.4 Pointer Tasks 10.2.4.1 Pointer Analysis 10.2.4.2 Point Generator...
Page 6 RXT-3900 e-Manual D07-00-111P Rev A00 12.2.3 General 12.2.4 GE Port-config 12.3 OTN Results 12.4 OTU2e & OTU1e Overview 12.5 OTU2e & OTU1e with Ethernet Payloads 12.5.1 Signal Setup 12.5.2 Hierarchy 12.5.3 Interface 12.5.4 Pattern 12.5.5 Measurements 12.5.6 General 12.5.7 Results 12.6 OTN Tools 12.7 Alarm/Error 13.0 Ethernet...
Page 7 RXT-3900 e-Manual D07-00-111P Rev A00 13.2.5.1 VoIP Check 13.2.5.2 VoIP Expert - Client/Server Mode 13.2.5.3 VoIP Expert - IP Phone Mode 13.2.5.4 Placing a Call 13.2.5.5 VoIP IP Phone Results 13.3 BERT 13.3.1 BERT Setup 13.3.1.1 Header Settings 13.3.1.2 Traffic Settings 13.3.1.3 Error Injection 13.3.1.4 Starting/Stopping a BERT 13.3.2 Results...
Page 8 RXT-3900 e-Manual D07-00-111P Rev A00 13.4.5 Background Results - Advanced SLA Mode 13.4.6 Peer-to-Peer and Asymmetric Testing 13.5 V-SAM 13.5.1 V-SAM Setup 13.5.1.1 Header Settings 13.5.1.2 Service Attributes 13.5.2 Results 13.6 Throughput Testing (Multiple Streams) 13.6.1 Setup 13.6.1.1 General Throughput Settings (Global Configuration) 13.6.1.2 MX Discover and Control Settings 13.6.1.3 Per Stream Configurations 13.6.1.4 Traffic Settings (Per Stream Configuration)
Page 9 RXT-3900 e-Manual D07-00-111P Rev A00 13.8.1 Setup 13.8.2 Results 13.9 Advanced Monitor 13.10 Loopback Mode 13.11 Scan 13.12 Packet Capture 13.13 Autoscripting 13.14 L2CP Transparency 13.15 IP Monitoring 13.16 PESQ 14.0 Fiber Channel 14.1 Setup 14.1.1 Test Applications 14.1.2 Port Configuration 14.2 BERT/Throughput 14.2.1 Overview 14.2.2 Setup...
Page 10 15.5 CPRI Layer 2 Monitor 15.5.1 Setup 15.5.2 Results 15.5.3 Service Disruption Test (SDT) Results 15.5.4 Control Words 16.0 Profiles 17.0 Common Functions 18.0 Warranty and Software 19.0 Product Specifications 20.0 Certifications and Declarations 21.0 About VeEX Go back to top...
Page 11: About This User Manual
No part of this document may be reproduced or transmitted electronically or otherwise without written permission from VeEX Inc. This device uses software either developed by VeEX Inc. or licensed by VeEX Inc. from third parties. The software is confidential and proprietary of VeEX Inc.
Page 12 RXT-3900 e-Manual D07-00-111P Rev A00 2.0 Introduction to RXT-3900 Refer to the RXT-1200 Platform Manual and RXT-3900 module specification sheet for information about key features, front panel, battery, loading test modules, hardware configurations, etc. Go back to top Go back to TOC...
Page 13: Safety Information
Do not operate the instrument in the presence of flammable gases or fumes or any other combustible environment. VeEX Inc. assumes no liability for the customer's failure to comply with safety precautions and requirements.
Page 14 RXT-3900 e-Manual D07-00-111P Rev A00 After extended storage, battery packs may reach a deep discharge state or enter into sleep mode. For safety reasons, Li- ion batteries in deep discharge state may limit the initial charging current (pre-recharge) before starting their regular fast charging cycle.
Page 15: Basic Operations
RXT-3900 e-Manual D07-00-111P Rev A00 4.0 Basic Operations For information on Basic Operations, Home menu, Launching Test Applications and other features refer to the RXT-1200 Platform manual. Go back to top Go back to TOC 4.1 Connector Panels & Test Ports RXT-3900 Connector Panel Go back to top Go back to TOC...
Page 16: Utilities
RXT-3900 e-Manual D07-00-111P Rev A00 5.0 Utilities Refer to the RXT-1200 Platform Manual for information about all Utilities and Tools available. Go back to top Go back to TOC...
Page 17: Signal Overview
RXT-3900 e-Manual D07-00-111P Rev A00 6.0 OTN, SDH/SONET Test Mode Accessing Setup: Please see Getting Started in the RXT-1200 Platform manual for information on launching Test Applications. SONET Home Menu The Setup page has four tabs for setting the OTN, SDH/SONET, and PDH parameters: Signal, Measurements, General, and Auto-Config tabs.
Page 18 RXT-3900 e-Manual D07-00-111P Rev A00 indicate errors and alarms, but any other results displayed will be the results of a previous test. Coupling TX and RX When the TX and RX signal structures are required to be identical or symmetrical, coupling the Transmitter and Receiver is possible.
Page 19 RXT-3900 e-Manual D07-00-111P Rev A00 Go back to top Go back to TOC...
Page 20: Setup: Sdh
RXT-3900 e-Manual D07-00-111P Rev A00 6.2 Setup: SDH SDH/SONET selection from the General tab Accessing SDH Testing To display SDH options for the TX and RX block configuration, 1. Tap on the General tab from the Setup screen and select SDH from the SDH/SONET drop-down menu. 2.
Page 21 RXT-3900 e-Manual D07-00-111P Rev A00 Operating Mode: Normal, Payload, or Transparent. Normal Mode: Unit working as normal SDH mode. Payload Through Mode: Overhead overwrite Editing Thru mode allows for some intrusive error and alarm injection through overhead manipulation. Transparent Through Mode: All the traffic goes through the unit untouched and the unit can monitor it. It is comparable to Monitor mode with a 10/90 splitter.
Page 22 RXT-3900 e-Manual D07-00-111P Rev A00 Tx Structure Setup - Text Mode SDH Mapping: Both AU-4 and AU-3 signal mappings per G.707 recommendations are supported. The multiplexing structure is shown below. Tx Structure Setup - Graphical Mode...
Page 23 RXT-3900 e-Manual D07-00-111P Rev A00 AU4 Mapping: VC4-64C, VC4-16C, VC4-4C, VC4, VC3, and VC12 are available. AU3 Mapping: VC3,VC12, and TU11/VC11 are available. Bulk: Tap the check box to enable the setting. In bulk mode, the entire VT container is filled with a test pattern per ITU-T 0.181 recommendations.
Page 24 RXT-3900 e-Manual D07-00-111P Rev A00 Rate: Depends on mapping selected. In TU11/VC11 mapping mode, the Low Rate options are 1.544M or Fractional DS1 (Nx64 or Nx56) where: 1.544M: Configures the transmitter for full rate testing at 1.544Mbps Fractional DS1 (Nx64 or Nx56): Configures the transmitter for fractional testing using N or M 64kbps timeslots (contiguous or non-contiguous timeslots) In VC3 mapping mode/Tributary set to DS3, the Low Rate options are 45M, 1.544M Mux (DS3/DS1 Mux), or Fractional DS1 (Nx64 or Nx56) Mux where:...
Page 25: Receiver Setup
RXT-3900 e-Manual D07-00-111P Rev A00 PRBS Pattern: Use the pattern drop-down box to select the test pattern which will be inserted into the transmitted signal. Pseudo Random Bit Sequences (PRBS) defined by ITU-T 0.150 and 0.151 standards, fixed words and 24-bit or 32 bit user defined patterns are available.
Page 26: Setup: Sonet
RXT-3900 e-Manual D07-00-111P Rev A00 6.3 Setup: SONET Selecting SONET from the General tab Setting up SONET Testing To display SONET options for the TX and RX block configuration, tap on the General tab from the Setup screen and select SONET from the SDH/SONET drop-down menu.
Page 27 RXT-3900 e-Manual D07-00-111P Rev A00 Operating Through Mode: Normal Mode: Unit working as normal SONET mode. Payload Through Mode: Overhead overwrite Editing Thru mode allows for some intrusive error and alarm injection through overhead manipulation. Transparent Through Mode: All the traffic goes through the unit untouched and the unit can monitor it. It is comparable to Monitor Mode with a 10/90 splitter.
Page 28 RXT-3900 e-Manual D07-00-111P Rev A00 Tx Structure Setup - Text Mode Mapping: STS-192C, STS-48C, STS-12C, STS-3C, STS-1 and VT1.5 is available. VT-2 is optional. STS mappings per Bellcore GR-253 and ANSI T1.105 recommendations are supported. The multiplexing structure is shown below. Tx Structure Setup - Graphical Mode...
Page 29 RXT-3900 e-Manual D07-00-111P Rev A00 Bulk: Tap the check box to enable the setting. In Bulk mode, the entire VT container is filled with a test pattern per ITU-T 0.181 recommendations. Tributary: Preset to DS1, E1, DS3, and E3 depending upon the options and mapping. Other channels:Unequipped—used to fill up unused (idle) timeslots, broadcast Sync: Async, Bit, Byte Channel Selection: The Tx channel is selected by entering the STS-N, VT-GRP, and VT-1.5 SPE channel.
Page 30 RXT-3900 e-Manual D07-00-111P Rev A00 In VT-1.5 mapping mode, The Low Rate options are 1.544M or Fractional DS1 (Nx64 or Nx56) where: 1.544M: Configures the transmitter for full rate testing at 1.544Mbps Fractional DS1 (Nx64 or Nx56): Configures the transmitter for fractional testing using N or M 64kbps timeslots (contiguous or non-contiguous timeslots) In STS-1 mapping mode/Tributary set to DS3, the Low Rate option are 45M or 1.544M Mux (DS3/DS1 Mux) or Fractional DS1 (Nx64 or Nx56) Mux where:...
Page 31: Receiver Setup
RXT-3900 e-Manual D07-00-111P Rev A00 Pattern: Use the pattern drop-down box to select the test pattern which will be inserted into the transmitted signal. Pseudo Random Bit Sequences (PRBS) defined by ITU-T 0.150 and 0.151 standards, fixed words and 24-bit or 32 bit user defined patterns are available.
Page 32 RXT-3900 e-Manual D07-00-111P Rev A00 Tapping the Pattern box opens the Rx Pattern setup screen. The pattern setup options for the Rx are the same as for the Tx described previously, except for the Out of Service selection, which should be selected if the incoming signal is expected to contain a known test pattern.
Page 33: Setup: Otn/Sdh
RXT-3900 e-Manual D07-00-111P Rev A00 6.4 Setup: OTN/SDH Selecting SDH from the General tab Setting up OTN/SDH To verify that the Tx and Rx block diagrams are OTN/SDH, confirm that SDH is selected from the SDH/SONET drop-down menu under the General tab. Go back to top Go back to TOC 6.4.1 OTN Transmitter Setup This section of the manual describes the OTN configuration capabilities.
Page 34: Transmitter Setup
RXT-3900 e-Manual D07-00-111P Rev A00 OPU2 Mapping (OTU-2 only): BMP, AMP ODTU01 Channel OPU1 Mapping: BMP, AMP OPU0 Mapping: GMP Note: ITU-T G.709 and both AU-4 and AU-3 signal mappings per G.707 recommendations are supported. The multiplexing structure is shown below. Scrambler: ON/OFF FEC: FEC encoder can be ON/OFF (activated / deactivated) OPU Type: SDH...
Page 35 RXT-3900 e-Manual D07-00-111P Rev A00 Tx Structure Setup - Graphical Mode Tx Payload Setup Tx Pattern Setup...
Page 36: Receiver Setup
RXT-3900 e-Manual D07-00-111P Rev A00 Go back to top Go back to TOC 6.4.2 Receiver Setup Hierarchy Tapping the Hierarchy setup box opens the Rx Hierarchy screen. The Hierarchy setup options for the Rx are the same as for the Tx described previously.
Page 37: Setup: Otn/Sonet
RXT-3900 e-Manual D07-00-111P Rev A00 6.5 Setup: OTN/SONET Selecting SONET from the General tab Setting up OTN/SONET To verify that the Tx and Rx block diagrams are OTN/SONET, confirm that SONET is selected from the SDH/SONET drop-down menu under the General tab. Go back to top Go back to TOC 6.5.1 Transmitter Setup This section of the manual describes the OTN configuration capabilities.
Page 38 RXT-3900 e-Manual D07-00-111P Rev A00 OPU2 Mapping (OTU-2 only): BMP, AMP ODTU01 Channel OPU1 Mapping: BMP, AMP OPU0 Mapping: GMP Note: ITU-T G.709 and STS mappings per Bellcore GR-253 and ANSI T1.105 recommendations are supported. The multiplexing structure is shown below. Scrambler: ON/OFF FEC: FEC encoder can be ON/OFF (activated / deactivated) OPU Type: SDH, PRBS...
Page 39 RXT-3900 e-Manual D07-00-111P Rev A00 Tx Structure Setup - Text Mode Tx Structure Setup - Graphical Mode Tx Payload Setup...
Page 40: Receiver Setup
RXT-3900 e-Manual D07-00-111P Rev A00 Tx Pattern Setup Go back to top Go back to TOC 6.5.2 Receiver Setup Hierarchy Tapping the Hierarchy setup box opens the Rx Hierarchy screen. The Hierarchy setup options for the Rx are the same as for the Tx described previously.
Page 41: Measurement Configuration
RXT-3900 e-Manual D07-00-111P Rev A00 6.6 Measurement Configuration Tapping the Measurements tab opens the setup screen for the Timer, Performance Analysis, and General configurations. Measurements tab Go back to top Go back to TOC 6.6.1 Timer Setup Configure a test to run for a fixed duration and/or a delayed start. Mode: Manual, Timed, and Auto selections are available.
Page 42 RXT-3900 e-Manual D07-00-111P Rev A00 The recommendations are briefly defined as follows: G.821: Error performance of an international digital connection operating at a bit rate below the primary rate and forming part of an Integrated Service Digital Network (ISDN) Long term error performance conducted Out of Service (OOS) Based on measuring bit errors Evaluation period of 30 days Since there is no overhead structure at these bit rates, in-service measurements are not recommended...
Page 43 RXT-3900 e-Manual D07-00-111P Rev A00 measurement timer has to be set to a determined period. The table below describes the anomalies evaluated for the performance analysis selected. Go back to top Go back to TOC 6.6.3 General The General setup page configures the audible alarm and APS protocol settings. Audible alarms may not be supported by all test sets, technologies and applications.
Page 44 RXT-3900 e-Manual D07-00-111P Rev A00 The Auto-Config function automatically configures the test set’s interface to match the received signal. A search for SDH and PDH signals at both the electrical or optical inputs is performed to determine the signal structure. For electrical signals, both Terminated and PMP voltage ranges are searched and supported.
Page 45 RXT-3900 e-Manual D07-00-111P Rev A00 Testing Process The test set measures how long the event remains present after it is first recognized and will continue to measure the total service disruption time in the event of multiple disruptions. Before starting, ensure that no errors or alarms are present on the transmission system because this will impact the measurement.
Page 46 RXT-3900 e-Manual D07-00-111P Rev A00 In the simplified example above, two events occur with 150ms of error free time in between. A gate time of 300ms counts them as one service disruption because the error-free section is less that the gate time. Using a gate time of 100ms to evaluate the same situation would coun two service disruptions, because the Gate Time condition is met within the error-free section.
Page 47 RXT-3900 e-Manual D07-00-111P Rev A00 7.0 Results Accessing Results To access measurements for SDH, SONET, and OTN, tap on Start, which starts testing, or Results. Go back to top Go back to TOC 7.1 Results: SDH 7.1.1 Summary The Summary tab displays a summary of test results and parameters. At a glance, the user is able to see if there are any alarms, errors, or signal failure pertaining to the SDH signal and its payload.
Page 48 RXT-3900 e-Manual D07-00-111P Rev A00 The soft LEDs on screen are arranged logically and will depend on signal hierarchy, structure, payload, and framing selected. The colors represent different error/alarm statuses: Green: No error or alarm is present. Red: An error or alarm condition is detected and is currently present. Yellow: Indicates a history condition.
Page 49 RXT-3900 e-Manual D07-00-111P Rev A00 SDH Error and Alarm defection criteria per ITU-T G.707 and O.150 recommendations:...
Page 50 RXT-3900 e-Manual D07-00-111P Rev A00...
Page 51 RXT-3900 e-Manual D07-00-111P Rev A00 Go back to top Go back to TOC Errors/Alarms (Page 2) Page 2 lists the SDH Errors in logical order that are associated with the signal under test. All errors are evaluated and stored. The Elapsed Time [ET] is shown in the right hand corner of the header. Error conditions are displayed in red including count and rate.
Page 52 RXT-3900 e-Manual D07-00-111P Rev A00 Errors/Alarms (Page 4 & 5) Page 4 & 5 lists the High Order Path and Low Order path in logical order that are associated with the signal under test. All alarms are evaluated and stored. Errors/Alarms (Page 6) Page 6 lists the PDH Alarms in logical order that are associated with the signal and payload under test.
Page 53 RXT-3900 e-Manual D07-00-111P Rev A00 Go back to top Go back to TOC 7.1.4 Signal The signal tab displays the Level and Frequency screen. Page 1 displays the level measurement in electrical units (volts) for STM-1, STM-4, STM-16 and STM-64 signals. Loss of Signal (LOS) and the Saturation level for optical signals are shown graphically including the level measurement in dBm.
Page 54 RXT-3900 e-Manual D07-00-111P Rev A00 SDH Current: Indicates the frequency of the input signal. Offset: Indicates the difference between the standard rate and the rate of the input signal. Min (ppm): Indicates the difference between the standard rate and the minimum deviation detected in the input signal. Max (ppm): Indicates the difference between the standard rate and the maximum deviation detected in the input signal.
Page 55 RXT-3900 e-Manual D07-00-111P Rev A00 Go back to top Go back to TOC 7.1.5 Histogram The Histogram tab displays the screen showing a historical record of the Alarms and Errors recorded during the measurement interval. A dedicated Page is available for errors and alarms including BER. Page 1 displays the Alarms associated with the Section Overhead (SOH) Alarm.
Page 56 RXT-3900 e-Manual D07-00-111P Rev A00 Page 4 displays the Alarms and Errors associated with the High Order Path (HP, SDH). The measured parameters are: HP-UNE (HP-Unequipped) HP-PLM (HP-Payload Mismatch) HP-TIM (HP-Trace Identifier Mismatch) HP-RDI (HP-Remote Defect Indication) B3 errors HP-REI (HP-Remote Error Indication) Go back to top Go back to TOC Histogram (Page 5) Page 5 displays the Alarms and Errors associated with the Tributary Unit (TU).
Page 57 RXT-3900 e-Manual D07-00-111P Rev A00 Graph (Page 10) Go back to top Go back to TOC 7.1.7 Performance Analysis G.821 Analysis The Analysis tab displays measured objectives from ITU-T performance tests selected from the Measurements tab (Setup > Measurements). For a brief description of supported G-Series and M-Series performance tests as well as setup instructions, please see Performance Analysis.
Page 58 RXT-3900 e-Manual D07-00-111P Rev A00 Pass/Fail result is in conjunction with path allocation between 0.1 and 100% Note: ITU-T G.821 evaluates bit errors, therefore, facilities for evaluating block errors are disabled. G.821 relies on the evaluation of bit errors, thus the test channel must be taken out of service to perform the measurement. Definitions: Errored Second (ES): A one-second time interval in which one or more bit errors occur.
Page 59 RXT-3900 e-Manual D07-00-111P Rev A00 G.828 evaluation can be performed on the following events: MS-REI HP-REI LP-BIP LP-REI Bit errors (TSE) Evaluation of the near end and far-end is possible, however far-end evaluations can only be made if REI is available. Bit errors can be evaluated for: Unframed patterns Framed patterns and bulk signals...
Page 60 RXT-3900 e-Manual D07-00-111P Rev A00 Bit errors can be evaluated for: Unframed patterns Framed patterns and bulk signals N x 64kbps Since M.2100 evaluates bit errors, facilities for evaluating block errors are disabled. Evaluation According to ITU-T M.2101 Note: M.2101 is only available in Timed and Auto Mode (see Timer Setup for setup information).
Page 61 RXT-3900 e-Manual D07-00-111P Rev A00 If SDT is enabled in Setup, the SDT tab will display time measurements of detected errors/alarms specified by the user in SDT setup. Last SDT: The duration of the last service disruption detected Min/Max: Shortest and longest service disruption duration Result: Waiting for trigger or Measure Waiting for trigger: Testing is in progress and the unit is waiting to detect an error/alarm Measure: Error/alarm is in progress...
Page 62 RXT-3900 e-Manual D07-00-111P Rev A00 7.2 Results: SONET 7.2.1 Summary The Summary tab displays a summary of test results and parameters. At a glance, the user is able to see if there are any alarms, errors, or signal failure pertaining to the SONET signal and its payload. Summary (Page 1) Go back to top Go back to TOC 7.2.2 Errors/Alarms...
Page 63 RXT-3900 e-Manual D07-00-111P Rev A00 Note: Tapping the individual colored block will automatically link directly to the applicable result screen which provides detailed information. Depending on the settings chosen in Setup > Signal, the Alarms/Errors displayed and page length will vary, but the order in which they are presented remain the same.
Page 64 RXT-3900 e-Manual D07-00-111P Rev A00 SONET Error and Alarm defection criteria per Bellcore GR.253 and ANSI T1.105/231:...
Page 65 RXT-3900 e-Manual D07-00-111P Rev A00 Go back to top Go back to TOC Errors/Alarms (Page 2) Page 2 lists the SONET Errors in logical order that are associated with the signal under test. All errors are evaluated and stored. The Elapsed Time [ET] is shown in the right hand corner of the header. Error conditions are displayed in red including count and rate.
Page 66 RXT-3900 e-Manual D07-00-111P Rev A00 The alarms associated with the Section and Line are displayed separately for ease of interpretation. Errors/Alarms (Page 4 & 5) Page 4 & 5 lists the STS Path and VT path in logical order that are associated with the signal under test. All alarms are evaluated and stored.
Page 67 RXT-3900 e-Manual D07-00-111P Rev A00 7.2.4 Signal The Signal tab displays the Level and Frequency screen. Page 1 displays the level measurement in electrical units (volts) for OC-3, OC-12, OC-48 and OC-192 signals. Loss of Signal (LOS) and the Saturation level for optical signals are shown graphically including the level measurement in dBm. Signal (Page 1) Go back to top Go back to TOC Frequency (Page 2)
Page 68 RXT-3900 e-Manual D07-00-111P Rev A00 Low quality clock sources that deviate from the nominal value cause problems in the operation of network elements. It is necessary and recommended to measure the signal frequency at all hierarchies to reduce synchronization risks. To measure line frequency in service, the test set must be connected to a Protected Monitoring Point (PMP).
Page 69 RXT-3900 e-Manual D07-00-111P Rev A00 Page 4 displays the Optical module (SFP or XFP) Power Measurement Graph. Signal - Optical (Page 4) Go back to top Go back to TOC 7.2.5 Histogram The Histogram tab displays the screen showing a historical record of the Alarms and Errors recorded during the measurement interval.
Page 70 RXT-3900 e-Manual D07-00-111P Rev A00 AIS-P (STS Path - Alarm Indication Signal) LOP-P (STS Path - Loss of STS Pointer) Histogram (Page 4) Page 4 displays the Alarms and Errors associated with the STS Path. The measured parameters are: UNEQ-P (STS Path-Unequipped) PLM-P (STS Path-Payload Mismatch) TIM-P (STS Path-Trace Identifier Mismatch) RDI-P (STS Path-Remote Defect Indication)
Page 71 RXT-3900 e-Manual D07-00-111P Rev A00 Graph (Page 1) Go back to top Go back to TOC 7.2.7 Performance Analysis G.821 Analysis The Analysis tab displays measured objectives from ITU-T performance tests selected from the Measurements tab (Setup > Measurements). See Performance Analysis for information on the Analysis tab and test definitions.
Page 72 RXT-3900 e-Manual D07-00-111P Rev A00 7.3 Results: OTN/SDH and OTN/SONET Measurements are accessed by tapping the Results icon in the main menu. The results comprise a range of tabbed pages, similar to the setup pages. 7.3.1 Summary The Summary tab displays a summary page of test results and parameters. At a glance, the user is able to see if there are any alarms, errors or signal failure pertaining to the OTN/SDH or OTN/SONET signal and its payload.
Page 73 RXT-3900 e-Manual D07-00-111P Rev A00 Note: Tapping the individual colored block will automatically link directly to the applicable result screen which provides detailed information. Depending on the settings chosen in Setup > Signal, the Alarms/Errors displayed and page length will vary. The colored headers are described in the table below: OTN Error and Alarm definitions per ITU-T G.709 recommendations:...
Page 74 RXT-3900 e-Manual D07-00-111P Rev A00...
Page 75 RXT-3900 e-Manual D07-00-111P Rev A00...
Page 76 RXT-3900 e-Manual D07-00-111P Rev A00 SDH errors/alarms are described in the SDH section of Errors and Alarms. SONET errors/alarms are described in the SONET section of Errors and Alarms. Go back to top Go back to TOC Errors/Alarms (Page 3) Page 3 lists the OTU Errors in logical order that are associated with the signal under test.
Page 77 RXT-3900 e-Manual D07-00-111P Rev A00 Page 8 to 14 lists the OTU/ODU/OPU Alarms and Errors in logical order that are associated with the signal and payload under test. All alarms are evaluated and stored. Errors/Alarms (Page 16 to 21) Page 16 to 21 lists the SDH/PDH Alarms in logical order that are associated with the signal and payload under test. All alarms are evaluated and stored.
Page 78 RXT-3900 e-Manual D07-00-111P Rev A00 SDH Current: Indicates the frequency of the SDH or SONET signal carried with the OTU frame 2M Current: Indicates the frequency of the PDH or T-Carrier payload. Options 1.5Mbps, 45Mbps, 34Mbps, 139Mbps Signal (Page 2) Go back to top Go back to TOC Optical Information (Page 3) The Optical Transceiver (SFP, SFP+, SFP28 or XFP) information including Vendor name, Part #, Firmware revision #, Optical...
Page 79 RXT-3900 e-Manual D07-00-111P Rev A00 7.3.5 Histogram The Histogram tab displays the screen showing a historical record of the Alarms and Errors recorded during the measurement interval. A dedicated Page is available for errors and alarms including BER. Page 1 displays the Alarms associated with the OTU Alarms. Histogram - SONET Alarms (Page 1) Note: The alarms and errors presented depend on the signal type and structure selected.
Page 80 RXT-3900 e-Manual D07-00-111P Rev A00 Histogram (Page 6) Page 6 displays the Alarms and Errors associated with OTU Errors. Histogram (Page 7) Page 7 displays the Alarms and Errors associated with ODU1 Alarms. Histogram (Page 8) Page 8 displays the Alarms and Errors associated with ODU1 Errors. Histogram (Page 9) Page 9 displays the BERT Alarms/Errors associated with the test pattern.
Page 81: Performance Analysis
RXT-3900 e-Manual D07-00-111P Rev A00 The Analysis tab displays measured objectives from ITU-T performance tests selected from the Measurements tab (Setup > Measurements). See the SDH section Performance Analysis for information on the Analysis tab and test definitions. For a brief description of supported G-Series and M-Series performance tests as well as setup instructions, please see Performance Analysis in the Measurement Configuration section.
Page 82: Pdh Alarms
RXT-3900 e-Manual D07-00-111P Rev A00 8.0 Alarm Generation and Error Insertion The Alarm/Error icon is available on the home menu. The alarm and error functions are used in conjunction with the drop-down menu which has dedicated buttons for error injection and alarm generation.
Page 83: Sonet Alarms
RXT-3900 e-Manual D07-00-111P Rev A00 Go back to top Go back to TOC 8.1.2 SONET Alarms The SONET Alarm Types that can be generated include: (Page 1) SONET LOF, Line AIS, Line RDI, Section TIM, Path LOP, Path AIS, Path UNEQ (Page 2) Path PLM, Path RDI, Path TIM, VT LOM, VT LOP, VT AIS, VT UNEQ (Page 3) VT PLM, VT RDI, VT RFI, VT TIM SONET Alarm Type...
Page 84: Error Insertion
RXT-3900 e-Manual D07-00-111P Rev A00 8.2 Error Insertion Pattern, SONET, and OTN errors can be generated. Error Flow: Injects different anomalies into the transmit signal. Error insertion flow modes include: Single: Inserts a single error every time the insertion button is tapped Count: Specific count or number of errors when the insertion button is tapped Fixed Rate: Specific rate that varies between 1x10 and 5x10...
Page 85 RXT-3900 e-Manual D07-00-111P Rev A00 Go back to top Go back to TOC Generating Alarms and Inserting Errors into Tests Selections made in the Alarm and Error sections are assigned to the Alarm Generation and Error Injection buttons respectively, located on the right side of the screen (see OTN/SDH/SONET Screen Icons).
Page 86: Otn Tools
RXT-3900 e-Manual D07-00-111P Rev A00 9.0 OTN Tools 9.1 Shortcuts OTN Tools Menu Overhead Analyzer: Displays the Optical Channel Transport Unit (OTU) Displays Optical Channel Data Unit (ODU) Displays Optical Channel Payload Unit (OPU) bytes of the received channel Overhead Generator: Used to edit Optical Channel Transport Unit (OTU) Used to edit Optical Channel Data Unit (ODU) Used to edit Optical Channel Payload Unit (OPU) bytes of the transmitted channel...
Page 87: Otn Frame Analysis
RXT-3900 e-Manual D07-00-111P Rev A00 The Overhead is color coded for simplified viewing. Decoding Bytes Tapping the applicable byte enables an automatic decode – a byte description including the Hexadecimal and Binary value is provided. For some bytes, an advanced decode of the various bits is also available. Byte Analyzer - Advanced Decode 9.2.1 OTN Frame Analysis The OTU framing is divided into two portions: FAS and MFAS.
Page 88 RXT-3900 e-Manual D07-00-111P Rev A00 The OTU overhead is comprised of the SM, GCC0, and RES bytes. Section Monitoring (SM) Bytes are used for the Trail Trace Identifier (TTI), Parity (BIP-8) and the Backward Error Indicator (BEI) (also known as the Backward Incoming Alignment Error [BIAE]), Backward Defect Indicator (BDI), and Incoming Alignment Error (IAE).
Page 89: Optical Data Unit (Odu) Analysis
RXT-3900 e-Manual D07-00-111P Rev A00 9.2.3 Optical Data Unit (ODU) Analysis The ODU overhead is divided into several fields: RES, PM, TCMi, TCM ACT, FTFL, EXP, GCC1/GCC2 and APS/PCC. Reserved (RES) bytes are undefined and set aside for future applications. Path Monitoring (PM) Field is similar to the SM field described above.
Page 90 RXT-3900 e-Manual D07-00-111P Rev A00 Go back to top Go back to TOC Fault Type and Fault Location (FTFL) Reporting communication channel field used to create a message spread over a 256-byte multiframe Provides the ability to send forward and backward path-level fault indications FTFL Type...
Page 91 RXT-3900 e-Manual D07-00-111P Rev A00 Go back to top Go back to TOC Experimental (EXP) Field not subject to standards and is available for network operator applications EXP Type Go back to top Go back to TOC General Communication Channels 1 and 2 (GCC1/GCC2) Fields are very similar to the GCC0 field, except that each channel is available in the ODU GCC1 Type...
Page 92: Optical Payload Unit (Opu) Analysis
RXT-3900 e-Manual D07-00-111P Rev A00 Go back to top Go back to TOC Automatic Protection Switching and Protection Communication Channel (APS/PCC) Supports up to eight levels of nested APS/PCC signals associated to a dedicated-connection monitoring level depending on the value of the multiframe APS/PCC Type Go back to top Go back to TOC 9.2.4 Optical Payload Unit (OPU) Analysis...
Page 93: Payload Label (Payload Structure Identifier)
RXT-3900 e-Manual D07-00-111P Rev A00 The other fields in the OPU overhead are dependent on the mapping capabilities associated to the OPU. For an asynchronous mapping (the client signal and OPU clock are different), Justification Control (JC) bytes are available to compensate for clock rate differences.
Page 94: Trace Identifier
RXT-3900 e-Manual D07-00-111P Rev A00 PSI[0] contains a one-byte Payload type. PSI[1] to PSI[255] are mapping and concatenation specific. Additional Payload types include the following: Hex Code Interpretation PCS Ethernet FC-1200 into OPU2e STM-1 mapping into OPU0 STM-4 mapping into OPU0 Go back to top Go back to TOC 9.4 Trace Identifier (Trail Trace Identifier) Tap the Trace Identifier icon to display the screen shown below.
Page 95: Tcm Tasks
RXT-3900 e-Manual D07-00-111P Rev A00 Trail Trace Identifier TTI similar to the J0 byte in SONET/SDH, is used to identify the signal from the source to the destination within the network. The TTI contains the so called Access Point Identifiers (API) which are used to specify the Source Access Point Identifier (SAPI) and Destination Access Point Identifier (DAPI).
Page 96: Round Trip Delay
RXT-3900 e-Manual D07-00-111P Rev A00 nested, and overlapping. LTC: Loss of Tandem Connection Signal AIS: TC Alarm Indication Signal OCI: Open Connection Indication LCK: Locked Defect BDI: Backward Defect Indication BIAE: Backward Incoming Alignment Error IAE: Incoming Alignment Error IEC: Incoming Error Count BEI: TC Backward Error Indication 9.6 Round Trip Delay The Round Trip Delay (Propagation Delay) measurement works by sending a test pattern with an error.
Page 97: Sdh/Sonet Tools
RXT-3900 e-Manual D07-00-111P Rev A00 10.0 SDH/SONET Tools 10.1 SDH Tools 10.1.1 SDH Tools Shortcuts SDH/SONET Tools Menu Overhead Analyzer: Displays the Section Overhead (SOH) and Path Overhead (POH) bytes of the received channel. Overhead Generator: SDH mode. Used to edit Section Overhead (SOH) and Path Overhead (POH) bytes of the transmitted channel.
Page 98 RXT-3900 e-Manual D07-00-111P Rev A00 Tapping the applicable byte enables an automatic decode – a byte description including the Hexadecimal and Binary value is provided. For some bytes, an advanced decode of the various bits is also available. Section Overhead (SOH) The following is a partial list of SOH bytes and their corresponding functions: Section Layer Framing Bytes (A1/A2)
Page 99 RXT-3900 e-Manual D07-00-111P Rev A00 The checksum value is placed in the RS overhead of the following STM-1 before scrambling Path Trace Byte (J0) Order Wire Byte (E1) Local order wire channel for voice communication between regenerators, cross connects, hubs and remote terminal locations F1 Byte Section user channel...
Page 100 RXT-3900 e-Manual D07-00-111P Rev A00 Go back to top Go back to TOC Line Layer / Multiplexer Section B2 Byte (MS-BIP) A 24-bit interleaved even parity code used to determine if transmission errors have occurred over the Multiplexer Section Its calculated over all the bits of the STM-1 frame except those in the Regenerator Section overhead The computed checksum is placed in the MSOH of the following STM-1 frame K1 Byte (APS-Linear) Used to activate and deactivate the switching between the main and protection paths on a multiplexer section...
Page 101 RXT-3900 e-Manual D07-00-111P Rev A00 1100 Signal fail (span) 1011 Signal fail (ring) 1010 Signal degrade (protection) 1001 Signal degrade (span) 1000 Signal degrade (ring) 0111 Manual switch (span) 0110 Manual switch (ring) 0101 Wait to restore 0100 Exercise (span) 0011 Exercise (ring) 0010 Reverse request (span) 0001 Reverse request (ring)
Page 102 RXT-3900 e-Manual D07-00-111P Rev A00 Go back to top Go back to TOC Data Communications Channel (DCC) Bytes (D4-D12) DCC – together these nine bytes form a 576kbps message channel for OAM purposes. They can be used for internally or externally generated messages or BER function. S1 Byte (Synchronization Status) Synchronization status message byte contains information about the quality of the embedded timing and is used to inform the remote Multiplexer of the clock quality used to generate signals.
Page 103 RXT-3900 e-Manual D07-00-111P Rev A00 It’s a channel used by craft persons and will be ignored as it passes through regenerators The relief byte is used for ring protection Go back to top Go back to TOC Path Overhead Layer (POH) The following is a partial list of POH bytes and their corresponding functions: J1 byte (STS Path Trace) High Order VC-N path trace byte...
Page 104 RXT-3900 e-Manual D07-00-111P Rev A00 Go back to top Go back to TOC G1 byte (Path status) High Order path status byte Used to convey the path terminating status back to the originating path, thus allowing bidirectional monitoring of the complete path Bits 1-4: Remote Error Indication (HP-REI) indicates number of bit errors detected by B3 Bit 5: Remote Defect indication (HP-RDI) set to 1 if signal failure is detected...
Page 105 RXT-3900 e-Manual D07-00-111P Rev A00 Go back to top Go back to TOC F2 byte (HP user channel) High Order Path user channel VC-4 path user channel used for communication between path elements H4 byte (TU Indicator) Position or Sequence Indicator Multiframe phase indicator used for tributary structured payloads F3 byte (LP) user channel Used for communication between path elements and is payload dependent.
Page 106 RXT-3900 e-Manual D07-00-111P Rev A00 Bit 8 is the VC12 path LP-RDI normally set to zero unless there is an error condition (AIS) V5 Byte (LP signal label) Go back to top Go back to TOC J2 byte (LP) Used to transmit a configurable 16-byte identifier that enables the receiving path to continuously verify its connection with the transmitter Uses the same byte structure as the J0 and J1 bytes N2 byte (LP)
Page 107 RXT-3900 e-Manual D07-00-111P Rev A00 Go back to top Go back to TOC Summary The Summary tab displays the summary screen listing the major bytes of the received SDH signal. It displays the Path Trace Identifiers (J0, J1, J2), APS (K1, K2), Synchronization status (S1), and HP (C2) and LP (V5) Signal Label bytes.
Page 108 RXT-3900 e-Manual D07-00-111P Rev A00 10.1.3 Overhead Generator Tap the Overhead Generator icon to display the OH screens shown below. There are three tabs: SOH TX, which allows editing of select bytes associated with the Section Overhead. Editing of J0, K1, K2, S1 is permitted as follows: Hexadecimal value using pop-up keypad.
Page 109: Pointer Tasks
RXT-3900 e-Manual D07-00-111P Rev A00 Summary tab, which is the same as the summary section of Overhead Analyzer. Overhead Generator Programming most overhead bytes is possible using the OH Generator feature, however dedicated test functions are available for Pointer Tasks, Payload Labels, Trace Identifier, APS Testing, TCM testing.
Page 110: Pointer Generation
RXT-3900 e-Manual D07-00-111P Rev A00 For TU pointers: Pointer value LOP (Loss of Pointer) PJE and NJE NDF or New Data Flags Difference and Sum Implied Offset [ppm] Analysis > TU tab Go back to top Go back to TOC 10.1.4.2 Pointer Generator The Pointer generator is able to generate individual pointer movements as follows: For AU pointers:...
Page 111 RXT-3900 e-Manual D07-00-111P Rev A00 For TU pointers: Adjustment: Increment (INC) or Decrement (DEC) pointer value by 1 byte is single steps. New Value: TU Pointer value: Set value in a range of 0 to 784 (TU-3) and 0 to 139 (TU-12). TU-11 Pointer value: Set value in a range of 0 to 109 (TU-11).
Page 112 RXT-3900 e-Manual D07-00-111P Rev A00 87-3: Generate an 87-3 pattern (87 consecutive pointer adjustments, 3 consecutive pointer value, with no adjustments) 87-3 Add: Generate an 87-3 pattern (87 consecutive pointer adjustments, 3 consecutive pointer value, added to have an additional pointer value) 87-3 Cancel: Generate an 87-3 pattern (87 consecutive pointer adjustments, 3 consecutive pointer value, reduced the number of adjustments by one) Unit: Select the type of unit to count: Frames...
Page 113: Trace Identifier
RXT-3900 e-Manual D07-00-111P Rev A00 Pointer Sequence Testing It is recommended to run one sequence with positive adjustments followed by a sequence with negative adjustments. Performing the measurement at the maximum positive and negative frequency offset applicable to the line rate increases the stress on the pointer processor. The test procedure includes an initialization period followed by a cool down period of 30 seconds with no pointer movements.
Page 114: Received Traces (Rx)
RXT-3900 e-Manual D07-00-111P Rev A00 Go back to top Go back to TOC 10.1.5.2 Received Traces (RX) J0 [RS]: Regenerator section trace Program a 1 or 16-byte identifier to set and check the expected trace Enable or disable the TIM (Trace Identifier Mismatch) alarm J1 [HP Path]: High order path section trace.
Page 115: Aps Testing
RXT-3900 e-Manual D07-00-111P Rev A00 For the RX label, enable or disable the Payload Mismatch (PLM) Alarm TX C2 [HP] V5 [LP Path]: Path signal label Program the TX and RX label by editing the hexadecimal value or by using the convenient drop-down menu selection For the RX label, enable or disable the Payload Mismatch (PLM) Alarm TX V5 [LP]...
Page 116 RXT-3900 e-Manual D07-00-111P Rev A00 APS Test Procedure: The test set should be connected to a tributary port of network element or transmission system to ensure that the switching time is measured for the service transported by the SONET network. Ensure that no errors or alarms are present on the transmission system because this will impact the measurement.
Page 117: Tributary Scan
RXT-3900 e-Manual D07-00-111P Rev A00 Go back to top Go back to TOC 10.1.8 Tributary Scan This function requires VC12 or VT-1.5 mapping and allows for a quick check of the signal structure, trace identifier, and the payload. An important part of any Add Drop Multiplexer (ADM) installation process is the verification of the path routing. Considering that an STM-1 contains 63 x VC-12’s and a STM-4 contains 252 x VC-12’s checking each path manually can be very time consuming.
Page 118: Round Trip Delay
RXT-3900 e-Manual D07-00-111P Rev A00 TCM Standards The Tandem paths are defined in ITU recommendation G.707 Annex D and Annex E G.707 Annex D for VC4 and VC3 G.707 Annex E for VC2 and VC1 G.707 defines a tandem connection source and sink and describes the responses of each when defect (alarm) and error conditions are detected Tandem connection maintenance signals are carried in: N1 byte for VC4 and VC3...
Page 119 RXT-3900 e-Manual D07-00-111P Rev A00 Go back to top Go back to TOC...
Page 120: Sonet Tools
RXT-3900 e-Manual D07-00-111P Rev A00 10.2 SONET Tools 10.2.1 SONET Tools Home Icons SDH/SONET Tools Menu Overhead Analyzer: Displays the Section/Line Overhead (SOH) and STS Path Overhead (POH) bytes of the received channel. Overhead Generator: Used to edit Section/Line Overhead (SOH) and STS Path Overhead (POH) bytes of the received channel.
Page 121 RXT-3900 e-Manual D07-00-111P Rev A00 Tapping the applicable byte enables an automatic decode – a byte description including the Hexadecimal and Binary value is provided. For some bytes, an advanced decode of the various bits is also available. Section Overhead (SOH) The following is a partial list of SOH bytes and their corresponding functions: Section Layer Framing Bytes (A1/A2)
Page 122 RXT-3900 e-Manual D07-00-111P Rev A00 The checksum value is placed in the SECTION overhead of the following STS-N before scrambling B1 (Section-BIP) Byte Order Wire Byte (E1) Local order wire channel for voice communication between regenerators, cross connects, hubs and remote terminal locations F1 Byte Section user channel...
Page 123 RXT-3900 e-Manual D07-00-111P Rev A00 H1 Pointer Byte Go back to top Go back to TOC Line Layer B2 Byte A 24-bit interleaved even parity code used to determine if transmission errors have occurred over the Section Layer Its calculated over all the bits of the STS-3 frame except those in the Section overhead The computed checksum is placed in the TOH of the following STS-N frame B2 Byte K1 Byte (APS-Linear)
Page 124 RXT-3900 e-Manual D07-00-111P Rev A00 0100 Exercise 0010 Reverse request (bidirectional systems only) 0001 Do not revert 0000 No request Other codes are unused Bits 5-8 selects channel used by APS messages 0000 Null channel 0001 to 1110 Channels 1 thru 14 1111 Extra traffic channels K1 Byte (APS-Linear) K1 Byte (APS-Ring)
Page 125 RXT-3900 e-Manual D07-00-111P Rev A00 Bits 6-8 110 RDI-L 111 AIS-L Others Not used K2 Byte (APS-Ring) Conforms to and follows ITU-T G.841 Bellcore GR.253 recommendations Used to activate and deactivate the switching between the main and protection paths on a multiplexer section Used to communicate Alarm Indication Signal (AIS) and Remote Defect Indication (RDI) conditions Bits 1-4 are the source node ID Bit 5 is the path code...
Page 126 RXT-3900 e-Manual D07-00-111P Rev A00 S1 Byte (Synchronization Status) Order Wire Byte (E2) A 64 kbps voice communication channel between multiplexers It’s a channel used by craft persons and will be ignored as it passes through regenerators The relief byte is used for ring protection Go back to top Go back to TOC Path Overhead Layer (POH) The following is a partial list of POH bytes and their corresponding functions:...
Page 127 RXT-3900 e-Manual D07-00-111P Rev A00 The computed checksum is placed in the B3 byte before scrambling B3 Byte (STS Path BIP) C2 byte (STS path signal label) Indicate the type of payload being transported in the STS, SPE, including the status of the mapped payloads. The table below indicates the standard C2 binary values: C2 Byte (STS Path signal label) C2 byte structure per GR.253 recommendations...
Page 128 RXT-3900 e-Manual D07-00-111P Rev A00 STS-1 payload with 2 VT-x payload defects STS-1 payload with 3 VT-x payload defects STS-1 payload with 4 VT-x payload defects STS-1 payload with 5 VT-x payload defects STS-1 payload with 6 VT-x payload defects STS-1 payload with 7 VT-x payload defects STS-1 payload with 8 VT-x payload defects STS-1 payload with 9 VT-x payload defects...
Page 129 RXT-3900 e-Manual D07-00-111P Rev A00 F2 byte (Path user channel) STS Path user channel STS-3# path user channel used for communication between path elements H4 byte (VT Indicator) Position or Sequence Indicator Multiframe phase indicator used for tributary structured payloads H4 Byte (VT Indicator) Z3/Z4 byte (STS Path) Allocated for future use.
Page 130 RXT-3900 e-Manual D07-00-111P Rev A00 Z5 Byte (Path TCM) V5 byte (VT path overhead) The first byte of a VT SPE provides the functions of error checking, signal label and path status. Continuous monitoring of anomalies or defects and payload composition at the path end or along the path Bits 1-2 provides error checking (BIP-2) Bit 3 is the REI-V (0 = no error, 1 = errors), that is sent back towards an originating VT PTE if errors were detected by the BIP-2.
Page 131 RXT-3900 e-Manual D07-00-111P Rev A00 J2 byte (VT path trace) Used to transmit a configurable 16-byte identifier that enables the receiving path to continuously verify its connection with the transmitter Uses the same byte structure as the J0 and J1 bytes Z6 byte (VT-TCM) Provides VT tandem connection monitoring function (TCM-V) for the VT-1.5, VT-2 levels.
Page 132 RXT-3900 e-Manual D07-00-111P Rev A00 Z7 byte (VT path Extended Label) If bits 5-7 of V5 byte are set to 101 (value = 5), then: The signal label in Z7 byte becomes valid where: This is a 32-bit multi-frame string Bit 1 is allocated to the extended signal label Bit 2 is allocated to virtual concatenation Bits 3 and 4 are unassigned and are reserved for VT APS signaling...
Page 133 RXT-3900 e-Manual D07-00-111P Rev A00 Go back to top Go back to TOC 10.2.3 Overhead Generator Tap the Overhead Generator icon to display the OH screens shown below. There are three tabs: SOH TX, which allows editing of select bytes associated with the Section Overhead. Editing of J0, K1, K2, S1 is permitted as follows: Hexadecimal value using pop-up keypad.
Page 134: Pointer Tasks
RXT-3900 e-Manual D07-00-111P Rev A00 POH TX, which allows editing of select bytes associated with the Path Overhead. Select bytes can be edited from the POH tab. Other bytes have dedicated menus located in other SONET applications. Hexadecimal value using pop-up keypad Binary values using simple on-screen bit toggle or pop-up keypad Convenient drop-down selections.
Page 135: Pointer Analysis
RXT-3900 e-Manual D07-00-111P Rev A00 Go back to top Go back to TOC 10.2.4.1 Pointer Analysis Pointers keep SONET signals synchronous by compensating for timing differences without having to use stuffing bits. Pointers are allowed to move up or down every three frames, however the actual rate should be slower. The Administrative Unit (AU) and the Tributary Unit (TU) each has its own pointer and the unit has two tabs for displaying the values and measurements.
Page 136: Point Generator
RXT-3900 e-Manual D07-00-111P Rev A00 Go back to top Go back to TOC 10.2.4.2 Point Generator The Pointer generator is able to generate individual pointer movements as follows: For STS pointers: Sequence (see Pointer Sequences) SS bits: Program bits 5 and 6 of the H1 byte to be either SONET [00], Unknown [01], SDH [10], or Unknown [11]. Adjustment: Increment (INC) or Decrement (DEC) pointers with identical polarity by 1 byte in single steps.
Page 137: Pointer Sequences
RXT-3900 e-Manual D07-00-111P Rev A00 Go back to top Go back to TOC 10.2.4.3 Pointer Sequences The Pointer generator is also able to generate Standard ITU-T G.783 and ANSI T1.105.03 and Bellcore GR-253 pointer sequences as follows: Sequence: Decide how to affect the pointer sequence Basic: Specify whether the pointer is increasing or decreasing Select Inc to increase the pointer value Select Dec to decrease the pointer value...
Page 138: Trace Identifier
RXT-3900 e-Manual D07-00-111P Rev A00 G.873 > STS tab Pointer Sequence Testing It is recommended to run one sequence with positive adjustments followed by a sequence with negative adjustments. Performing the measurement at the maximum positive and negative frequency offset applicable to the line rate increases the stress on the pointer processor. The test procedure includes an initialization period followed by a cool down period of 30 seconds with no pointer movements.
Page 139: Received Traces (Rx)
RXT-3900 e-Manual D07-00-111P Rev A00 The message is transmitted one byte per STS-3 frame J2 [VT Path]: Low order path section trace Program a 16 or 64-byte identifier to check the low order transmission path Note: To program or edit the transmitted trace, tap the applicable trace box to display the pop-up keyboard. TX >...
Page 140: Payload Labels
RXT-3900 e-Manual D07-00-111P Rev A00 10.2.6 Payload Labels This function is used to set the C2 and V5 Path Signal Labels which indicate the content of the High order and Low order VCs. Tap the Payload Label icon to display the payload label screens. There are dedicated tabs for Transmitted and Received payload labels and setups: C2 [STS Path]: Path signal label Specifies the mapping type in the STS-1n...
Page 141 RXT-3900 e-Manual D07-00-111P Rev A00 The protection mechanism is coordinated by the K1 and K2 bytes in the Multiplexer Section Overhead. APS Standards The principles and protocols of APS in SDH networks are defined in ITU-T G.783 and G.841 and Bellcore GR-253 recommendations for Linear and Ring network architectures respectively.
Page 142: Tributary Scan
RXT-3900 e-Manual D07-00-111P Rev A00 Go back to top Go back to TOC 10.2.8 Tributary Scan This function requires VC12 or VT-1.5 mapping and allows for a quick check of the signal structure, trace identifier, and the payload. Tributary Scan An important part of any Add Drop Multiplexer (ADM) installation process is the verification of the path routing.
Page 143: Round Trip Delay
RXT-3900 e-Manual D07-00-111P Rev A00 TCM Standards The Tandem paths are defined in ITU recommendation G.707 Annex D and Annex E. ITU-T recommendation G.707 defines a tandem connection source and sink and describes the responses of each when defect (alarm) and error conditions are detected. Tandem connection maintenance signals are carried in the Z5 byte for STS-N and in the Z6 byte for VT's.
Page 144 RXT-3900 e-Manual D07-00-111P Rev A00 From the Setup icon, select SONET from Signal > Hierarchy and from General > SDH/SONET. Set check box on Signal > Pattern (Rx) to Out-of-Service. Press Start to view Round Trip Delay results for the looped back signal Go back to top Go back to TOC...
Page 145: Pdh Tools
RXT-3900 e-Manual D07-00-111P Rev A00 11.0 PDH Tools PDH Menu Go back to top Go back to TOC 11.1 E1 Sa Bits & SSM QL (Clock Quality Level) The Sa bits, or spare bits, are part of the NFAS (non-Frame Alignment Signal), which is sent at the beginning (time slot 0) of each odd frame.
Page 146: E1 Sa Bits Ssm Ql (Clock Quality Level)
RXT-3900 e-Manual D07-00-111P Rev A00 Quality Unknown 0000 Reserved 0001 G.811 PRC 0010 Reserved 0011 SSU-A 0100 Reserved 0101 Reserved 0110 Reserved 0111 SSU-B 1000 Reserved 1001 Reserved 1010 SETS/SEC 1011 Reserved 1100 Reserved 1101 Reserved 1110 Do not use for sync 1111 E1 Sa Bits SSM QL...
Page 147: E1 Receive Data
RXT-3900 e-Manual D07-00-111P Rev A00 Go back to top Go back to TOC 11.2 E1 Receive Data The PDH E1 RX data shows received data for individual timeslots. E1 RX Data Go back to top Go back to TOC...
Page 148: Ethernet Over Otn (Eootn)
ODU0 (1.25 Gbps) can accommodate a 1GE client transparently. As its name implies, ODUflex adds flexibility in the data rate and is capable of carrying Nx1.25 Gbps payloads, including Ethernet. Refer to VeEX's OTN Reference Guide, QG20, for a technological overview of ODU0 and ODUflex.
Page 149: Measurements
RXT-3900 e-Manual D07-00-111P Rev A00 FEC: Turns the standard Forward Error Correction function ON and OFF. It is recommended to leave it ON. Payload FCS: When an Ethernet test payload is selected, this turns the standard Frame Check Sum generation and evaluation ON and OFF.
Page 150: General
RXT-3900 e-Manual D07-00-111P Rev A00 Manual mode is chosen as the default configuration for starting/stopping the test. Configure a test to run for a fixed duration or a delayed start. Manual mode is chosen as the default configuration for starting/stopping the test. Mode: Manual, Timed, and Auto selections are available.
Page 151: Ge Port-Config
RXT-3900 e-Manual D07-00-111P Rev A00 Audible Alarm: OFF, ON. Unit beeps every time an alarm is detected. This feature is not available on all test sets. Results on start: On or Off. Provides an automatic move to Result screen when it starts. Auto Save: Automatically saves the results file.
Page 152 RXT-3900 e-Manual D07-00-111P Rev A00 For information on Ethernet payloads, refer to the Ethernet section for more information. For Bulk (PRBS) payloads, refer to Results: OTN/SDH and OTN/SONET. Results Go back to top Go back to TOC...
Page 153: Otu2E & Otu1E Overview
RXT-3900 e-Manual D07-00-111P Rev A00 12.4 OTU2e & OTU1e Overview Overclocked OTN Testing OTU2e (11.1 Gbps), OTU1e (11.05 Gbps), or OTUXe, also referred to as overclocking, is an adaptation technology that increases the frequency (data rate) of the standard OTU2 (10.7 Gbps) interface, in order to better accommodate 10GE payloads (which the standard ODU2 was not capable to achieve transparently).
Page 154: Hierarchy
RXT-3900 e-Manual D07-00-111P Rev A00 Tap on the Signal tab to set up the Transmitter and Receiver interfaces and associated test parameters prior to running a test. The TX and RX ports setup can be Coupled to share the same configuration. For more complex test scenarios in which the TX and RX port settings need to be different, tap on the blue bar (on top of the Hierarchy box), to select Independent mode.
Page 155: Pattern
RXT-3900 e-Manual D07-00-111P Rev A00 Clock Source: Internal, External, Rx, or Offset. Internal clock: The clock for the transmitter is derived from the internal clock. The internal clock has an accuracy of +/- 3.5ppm conforming to G.812 recommendations. External clock: The clock for the transmitter is derived from 2Mbps (or 1.5Mbps) signal 2MHz (or 1.5MHz) BITS clock 64Kbps (co-directional) present on the SMA connector...
Page 156 RXT-3900 e-Manual D07-00-111P Rev A00 PRBS Pattern: Use the pattern drop-down box to select the test pattern which will be inserted into the transmitted signal. Pseudo Random Bit Sequences (PRBS) defined by ITU-T 0.150 and 0.151 standards, fixed words and 24-bit or 32 bit user defined patterns are available.
Page 157: Measurements
RXT-3900 e-Manual D07-00-111P Rev A00 Results on start: On or Off. Provides an automatic move to Result screen when it starts. Auto Save: Automatically saves the results file, when the test is stopped. Measurement Clock Source: Select Internal Clock or Tx Clock Source as the references for rates, frequency and offset measurements.
Page 158: Otn Tools
RXT-3900 e-Manual D07-00-111P Rev A00 12.6 OTN Tools The OTN Tools applications featured in ODU0 and ODUflex Test Mode are the same as the ones featured in OTN/SDH Single and Dual Test Modes. Refer to OTN Tools from the OTN/SONET/SDH section for more information on these test applications. OTN Tools in ODU0 and ODUflex Test Mode Go back to top Go back to TOC...
Page 159: Alarm/Error
RXT-3900 e-Manual D07-00-111P Rev A00 12.7 Alarm/Error The Alarm/Error application featured in ODU0 and ODUflex Test Mode is the same as the application in OTN/SDH Single and Dual Test Modes. Refer to Alarm/Error from the SDH/SONET/OTN section for more information. Alarm/Error in ODU0 and ODUflex Test Mode Go back to top Go back to TOC...
Page 160: Ethernet
RXT-3900 e-Manual D07-00-111P Rev A00 13.0 Ethernet Test mode, test port(s), and network settings are required prior to performing any measurements or applications. Setup Test Port Selection Port Setup 1GE Fiber Port 10GE Port Measurement Settings MX Discover and Control OAM Discover 13.1 Ethernet Setup 13.1.1 Test Port Selection...
Page 161 RXT-3900 e-Manual D07-00-111P Rev A00 Note: The Test Mode Selection screen may appear differently depending on the unit you are using. When the dual port interfaces and software options are enabled, the test module can operate a combination of two ports at the same time.
Page 162 RXT-3900 e-Manual D07-00-111P Rev A00 Auto Negotiation: On or Off. Matches the test set's negotiation settings to those of the link partner. Speed (only when Auto Negotiation is Off): 10 Mbps, 100 Mbps, or 1000 Mbps. Duplex (only when Auto Negotiation is Off): Half or Full. Advertisement (only when Auto Negotiation is On): Default-All or Custom.
Page 163: Measurement Settings
RXT-3900 e-Manual D07-00-111P Rev A00 Status Status tab The Status tab lists current port settings. Please note that the Status tab is only available if a copper port option (RJ45) is selected from the Test Port Selection menu. Note: Test units shipped before January 2012 support up to +/- 50 ppm offset only. Units shipped from 2012 onwards, support up to +/- 150 ppm offset.
Page 164: Mx Discover And Control
Note: If using OAM Discover, it is unnecessary to assign an IP address to the local or remote unit. Using MX Discover MX Discover enables the test set to discover other VeEX VePal test sets and devices with an assigned IP address on the same subnet. To discover other devices using MX Discover: 1.
Page 165 User Defined: Input the destination IP address of the far-end device. OAM Discover: Lists OAM discovered devices. Select from the list of discovered devices to loop up/down. X-loop: Loops up non-VeEX networking equipment. Remote Partner Control The Peer-to-Peer option is available only for RFC 2544 testing. For more information on Peer-to-Peer mode, please see...
Page 166 RXT-3900 e-Manual D07-00-111P Rev A00 2. Tap on OAM Loopback to see a list of discovered OAM devices. Select an OAM device and press Loop Up to send a loop up command to the selected remote unit. For detailed descriptions of Discovery Capabilities, Link Events, and Notification Settings, please see Ethernet OAM Testing.
Page 167: Vipag/V-Route Test
Fill out each screen and press NEXT to proceed to the next page or Previous to go back to the previous screen. Select the test type: SILO/Router Wrap Test, End-to-End Test (VeEX to VeEX), End to Loopback Test Step 1: Select the router test interface. "Local unit" denotes a router wrap test while "end-to-end" conducts an end-to-end test.
Page 168 RXT-3900 e-Manual D07-00-111P Rev A00 Step 10: Review the settings for both ports. Press Start to begin testing. Pressing Reconfigure will restart the Quick Test Setup and return the screen to Step 1. Step 10: Review Configuration Quick Test View After starting the test, the Error Injection button for each port becomes available and the screen displays Quick Test view and the following results for both ports: Link Up/Down status...
Page 169 RXT-3900 e-Manual D07-00-111P Rev A00 Setup Test sets come preconfigured. To customize settings for both ports, go to the Setup tab. For configuration instructions, please refer to BERT. Setup Go back to top Go back to TOC Results Summary Results...
Page 170: Ip Connection
RXT-3900 e-Manual D07-00-111P Rev A00 The Summary tab lists the Pass/Fail status of each ARP, Ping, and Throughput test along with test measurements. The Results tabs for each port lists statistical results similar to those featured in the BERT Results section. Please see BERT Results for more information.
Page 171: Status
RXT-3900 e-Manual D07-00-111P Rev A00 IPv4 or IPV6 IP Type: IPv4 or IPv6 IP Address: Static, DHCP (IPv4 only) or AUTO (IPv6 only) Static: The user is required to enter a Local IP, Gateway address, and Subnet. All Static fields can be filled by tapping on the section to access an alphanumeric keyboard Local IP: IPv4/IPv6 address of the test set Gateway: IPv4/IPv6 address of the network gateway...
Page 172: Trace Route
RXT-3900 e-Manual D07-00-111P Rev A00 13.2.2 Trace Route Trace Route is a common method used to find the route to the destination IP address or URL. Refer to Trace Route in the RXT-1200 for more information on this feature including setup and results. Go back to top Go back to TOC 13.2.3 ARP Wiz ARP Wiz uses the Address Resolution Protocol (ARP) to verify the status of each IP address in a user-selectable IP range.
Page 173 RXT-3900 e-Manual D07-00-111P Rev A00 Test Duration: Specify the duration of the test. Encoding: Select Codec. The ICMP ping will be sent with a payload content and size similar to the selected codec. Supported codecs are G.711 A-law, G.711 μ-Law, G.729, G.723. Jitter Buffer: Enter the size in ms of the jitter buffer.
Page 174 RXT-3900 e-Manual D07-00-111P Rev A00 VoIP Expert is a simple and effective tool for pre-qualifying VoIP service and verifying triple play implementations. It allows the user to assess end-to-end VoIP QoS under simulated or live network conditions where packet loss, latency, jitter, bandwidth congestion, link disconnects, IP version type, VLAN and MPLS routing and concurrent triple play traffic all play a role.
Page 175 RXT-3900 e-Manual D07-00-111P Rev A00 Mode: Select Client from the drop -down menu. Server: Type in the destination server address (Test set configured in Server mode or VX1000 server). Test Duration: Configures the duration of the voice test file. Encoding: Select the codec from the drop -down menu. The voice file transmitted will use the selected encoding. Supported codecs are G.711 A-law, G.711 μ-Law, G.729 (optional), G.723.1 (optional).
Page 176 RXT-3900 e-Manual D07-00-111P Rev A00 Client side: Start the test. Client initiates a connection to the Server. If the connection is successful, the Client transmits the test file (UDP traffic with audio file payload) in the upstream direction towards the Server. Once the upstream transmission completes, the Server transmits the test file (UDP traffic with audio file payload) in the downstream direction towards the Client.
Page 177 RXT-3900 e-Manual D07-00-111P Rev A00 VoIP MOS Ratings UP: Indicates that the results are for the upstream direction - transmitted packets. DN: Indicates that the results are for the downstream direction - received packets. Note that Client and Server results will show with reversed measurements.
Page 178 RXT-3900 e-Manual D07-00-111P Rev A00 Packet Statistics (Page 1) - Sample from VoIP Expert - Client/Server Mode Packet Statistics (Page 1) Data Throughput: Average Data rate in kbps. Packets Received: Number of packets received. Packet Loss Rate: Average Packet Loss rate in kbps. A lost packet is never received by the application. Packet Loss Count: Number of packets not received.
Page 179 RXT-3900 e-Manual D07-00-111P Rev A00 the mean deviation of the difference in packet spacing at the receiver compared to the sender for a pair of packets. If Si is the timestamp from packet i, and Ri is the time of arrival for packet i, then for two packets i and j, D(i,j) = (Rj - Ri) - (Sj - Si).
Page 180 RXT-3900 e-Manual D07-00-111P Rev A00 Select the result(s) you would like to view by clicking the corresponding check box. Click the View button to display the selected result(s). MOS/R Results...
Page 181 RXT-3900 e-Manual D07-00-111P Rev A00 Go back to top Go back to TOC MOS/R Results UP: Indicates that the results are for the upstream direction - transmitted packets. DN: Indicates that the results are for the downstream direction - received packets. Note that Client and Server results will show with reversed measurements. MOS-LQ: Listening Quality MOS score, this score is based on packet metrics - codec, packet loss, discard and jitter.
Page 182 RXT-3900 e-Manual D07-00-111P Rev A00 Packets received: Number of packets received. Packets lost: Number of packets not received. Packets discarded: Number of packets received too late that have been dropped by the jitter buffer. Packets early: Number of voice stream packets arriving early, but still within the jitter buffer range. Packets late: Number of voice stream packets arriving late, but still within the jitter buffer range.
Page 183 RXT-3900 e-Manual D07-00-111P Rev A00 Go back to top Go back to TOC MOS/R - Degradation Factors Loss Degradation: The percentage of the overall quality degradation that can be attributed to network packet loss Discard Degradation: The percentage of the overall quality degradation that can be attributed to jitter buffer discard (i.e. jitter) CODEC Degradation: The percentage of the overall quality of degradation that can be attributed to codec Delay Degradation: The percentage of the overall quality of degradation that can be attributed to delay...
Page 184 RXT-3900 e-Manual D07-00-111P Rev A00 Burst/Gap Count: Number of bursts that occur on the voice stream Avg Burst/Gap Loss rate: The average percentage of MIUs lost and/or discarded during burst conditions Avg Burst/Gap Length (ms): The average burst length in ms Avg Burst/Gap Length (pkts): The average burst length in packets Burst/Gap R: The average listening R-factor for the gap periods Avg.
Page 185 RXT-3900 e-Manual D07-00-111P Rev A00 IP Phone mode emulates an IP phone and can place and receive calls using SIP or H.323 protocols, sending or receiving live audio (with headset) or prerecorded file. Comprehensive Codec support and call destination options verify voice encoding and translation provisioning. Real-time evaluation of voice quality with a complete set of measurements available at the end of the call, including packet statistics, jitter statistics, and MOS and R-factor call quality scores.
Page 186 Codec: G.711 µ-law and G.711 A-law Headphone: On: Requires you to plug in the VeEX provided USB headphone. Talk/Listen through the headphone Off: Unit will transmit a pre-recorded audio file during the test Press Register to start registration to the Gatekeeper.
Page 187 RXT-3900 e-Manual D07-00-111P Rev A00 SIP Configuration (Page 1) For SIP Phone Setup, fill out these additional parameters: SIP Phone Setup (Page 1) Mode: Select IP Phone from the drop -down menu. Profile: Select from Delete, Save, Save as..., or Default. Protocol: Select SIP from the drop -down menu.
Page 188 SIP Phone Setup (Page 2) Headphone: On: Requires you to plug in the VeEX provided USB headphone. Talk/Listen through the headphone. Off: Unit will transmit a pre-recorded audio file during the test. Note: Headphone ON is required for G.723.1 or G.729 codecs.
Page 189 RXT-3900 e-Manual D07-00-111P Rev A00 After pressing the Register key, the Status screen displays the registration status. If the registration is successful, you can place a call to a remote party. Peer URL: Remote party phone number or URL Press the Call button to place a call. When the call is connected, press the MOS On key to start voice quality measurements.
Page 190 RXT-3900 e-Manual D07-00-111P Rev A00 Tap on a packet link to open a window with additional information. Go back to top Go back to TOC...
Page 191 RXT-3900 e-Manual D07-00-111P Rev A00 13.3 BERT 13.3.1 BERT Setup Tap on Advanced Tools (Home Menu) > BERT icon to access BER testing features. Advanced Tools Home Menu Overview: BER testing at Layer 1, 2, 3, and 4 is supported. The BERT can be configured to use either regular PRBS test patterns, stress patterns (specifically for 10Gigabit Ethernet) or user defined test patterns to simulate various conditions.
Page 192 RXT-3900 e-Manual D07-00-111P Rev A00 Go back to top Go back to TOC 13.3.1.1 Header Settings Profile: Load a previously configured test profile or create a new profile from existing settings. Please see Profiles in the ReVeal MTX300 manual for more details on how to create new profiles using ReVeal software. Encapsulation Type: None, Provider Backbone Bridge (PBB-TE), or Multiprotocol Label Switching (MPLS-TP).
Page 193 RXT-3900 e-Manual D07-00-111P Rev A00 MPLS: Off, 1 tag, 2 tags, 3 tags The user is able to configure up to 3 MPLS tags Note: MPLS tag configuration is only available when the MPLS option is purchased The most common Ethernet Frame format, Type II Go back to top Go back to TOC MAC, VLAN, MPLS, IP, and Test Pattern Configurations: To configure the MAC addresses, IP addresses, VLAN tag(s), MPLS tag(s), and test pattern, tap on the frame image displayed...
Page 194 RXT-3900 e-Manual D07-00-111P Rev A00 Go back to top Go back to TOC VLAN Tab: In the VLAN tab the following parameters are configured: VLAN ID: Configurable in the range 1 to 4094. VLAN ID is the identification of the VLAN, which is basically used by the standard 802.1Q. It has 12 bits which allows the identification of 4096 (2^12) VLANs.
Page 195 RXT-3900 e-Manual D07-00-111P Rev A00 CoS: Configurable in the range 0 to 6. Note: This field is three bits in length and maps directly to IP Precedence TOS bits to provide Class of Service (COS). S-bit: Configurable 0 or 1. Note: The S field is one bit in length and is used for stacking labels.
Page 196 RXT-3900 e-Manual D07-00-111P Rev A00 Go back to top Go back to TOC Data Tab: User selects a test pattern that will be encapsulated in the Ethernet frame payload (for framed mode). Depending on the test layer, different test pattern options are available. Layer 1 Framed Test Patterns CRPAT: Compliant Random Pattern provides broad spectral content and minimal peaking for the measurement of jitter at component or system level.
Page 197 RXT-3900 e-Manual D07-00-111P Rev A00 Layer 1 Unframed Test Patterns HFPAT (High Frequency Pattern): This test pattern is to test random jitter (RJ) at a BER of 10-12, and also to test the asymmetry of transition times. This high frequency test pattern generates a one, or light on, for a duration of 1 bit time, followed by a zero, or light off, for a duration of 1 bit time.
Page 198 RXT-3900 e-Manual D07-00-111P Rev A00 Auto (Special Patterns): For special patterns, the most significant bit of the test pattern is populated first into the payload frame, as opposed to non-special patterns, in which the least significant bit is populated first. BERT Setup - Data selection - Special Patterns (Page 2) Go back to top Go back to TOC RX Filter Tab: Allows the user to filter incoming streams.
Page 199 RXT-3900 e-Manual D07-00-111P Rev A00 UDP/TCP: Input Source Port and Destination Port. BERT Setup - RX Filter selection Go back to top Go back to TOC 13.3.1.2 Traffic Settings Traffic tab: The user configures the traffic profile for the stream, including traffic flow, frame size, frame type, and transmit rate. Traffic Flow: Select from the following traffic flows: Constant: The selected frame is transmitted continuously according to the selected bandwidth %.
Page 200 RXT-3900 e-Manual D07-00-111P Rev A00 When traffic flow is equal to Ramp, starting and an ending bandwidth are configured along with the bandwidth step size and duration BERT Setup - Constant Traffic Note: Frame Size Limitations Layer 1 framed mode - Frame size configuration is not available. Layer 1 unframed mode - Traffic profile is constant at 100% bandwidth.
Page 201 RXT-3900 e-Manual D07-00-111P Rev A00 Error Injection After pressing Start, error injection can be enabled by pressing the Error Inj. button on the right side of the screen. Go back to top Go back to TOC 13.3.1.4 Starting/Stopping a BERT Once all configurations have been made, the user can start the BERT test (press the green Start button on the top right section of the screen).
Page 202 RXT-3900 e-Manual D07-00-111P Rev A00 the loopback that is in place. Go back to top Go back to TOC 13.3.2 BERT Results 13.3.2.1 Summary Summary tab: The following results including the Start (ST) and Elapsed (ET) times are displayed: Line Rate (Mbps): Negotiated rate of the interface (10M, 100M, or 1000M). This value is always fixed since it depends on the maximum capacity of the link under test, hence the test interface that is configured.
Page 203 RXT-3900 e-Manual D07-00-111P Rev A00 Go back to top Go back to TOC 13.3.2.3 Events Events tab: A time stamped record or log of anomalies, alarms, test status (start/stop) and test application are displayed. BERT Results - Events Go back to top Go back to TOC 13.3.2.4 Traffic Traffic tab: The following Traffic statistics are displayed: Frame type: Test and non-test frames...
Page 204 RXT-3900 e-Manual D07-00-111P Rev A00 Go back to top Go back to TOC Frames tab: The following Frame distribution statistics are displayed in Count (#) and Percentage (%): Received (RX) frames: Total frames Test frames VLAN tagged frames Q-in-Q VLAN stacked frames Non-test frames Transmitted (TX) frames: Total frame - Total # frames transmitted...
Page 205 RXT-3900 e-Manual D07-00-111P Rev A00 Go back to top Go back to TOC Frame Size tab: The following Frame distribution statistics are displayed in Count (#) and Percentage (%): < 64 bytes frames 64-127 byte frames 128-255 byte frames 256-511 byte frames 512-1023 byte frames 1024-1279 byte frames 1280-1518 byte frames...
Page 206 RXT-3900 e-Manual D07-00-111P Rev A00 BERT Results - Rates Go back to top Go back to TOC 13.3.2.6 Delay Delay tab: Delay measures the interpacket gap, start of the frame, and preamble duration. Frame arrival statistics are displayed in tabular format: Current Minimum Maximum...
Page 207 RXT-3900 e-Manual D07-00-111P Rev A00 Total: Total accumulated duration of the service disruptions Min/Max: Minimum and maximum duration of the service disruption events No. of Occurrences: Counter of service disruption events BERT Results - Alarms Go back to top Go back to TOC 13.3.2.8 Signal The Signal tab (fiber ports only) displays the optical level measured by the SFP or XFP transceiver.
Page 208 RXT-3900 e-Manual D07-00-111P Rev A00 Signal (Page 3) BERT Results - Signal (Page 3) The received signal frequency and offset is measured and performed on the optical interface (SFP or XFP). Current: Indicates the frequency of the input signal. Offset: Indicates the difference between the standard rate and the rate of the input signal. Min (ppm): Indicates the difference between the standard rate and the minimum deviation detected in the input signal.
Page 209 RXT-3900 e-Manual D07-00-111P Rev A00 13.4 RFC 2544 Conformance Testing Overview Setup - Standard Mode Header Settings Frames Settings Threshold Settings Peer-to-Peer Asymmetric Testing Asymmetric Testing Setup Throughput Settings Latency Settings Frame Loss Settings Burst Settings Starting / Stopping a RFC2544 Measurement Results - Standard Mode Status Summary...
Page 210 MPLS: MAC, VLAN, MPLS, IP, and Test Pattern Configurations: MAC Header Tab Data Tab: No payload selection is possible. The payload area is populated with a VeEX signature field and other proprietary data. RX Filter Tab VLAN Tab MPLS Tab...
Page 211 RXT-3900 e-Manual D07-00-111P Rev A00 Go back to top Go back to TOC 13.4.1.2 Frames Settings Frames tab: User configures the following: Preset Frames: User selects from a list of recommended test frame sizes defined in RFC 2544: Test frames are 64, 128, 256, 512, 1024, 1280, and 1518 bytes. The default selected frames are 64 and 1518 bytes.
Page 212 RXT-3900 e-Manual D07-00-111P Rev A00 User enables or disables threshold settings for the throughput and latency tests. When enabled, threshold settings can be configured for all of the test frames selected in the frame settings tab. A Pass/Fail criteria will be applied when the threshold settings are enabled. Select a rate type from the drop-down menu that will be used to determine pass/fail criteria.
Page 213 RXT-3900 e-Manual D07-00-111P Rev A00 Go back to top Go back to TOC Latency tab: User configures the following: Test: Throughput Rate or Custom Rate. The default value is throughput. Throughput rate: Latency test will be performed at the throughput rate found for each of the tested frame sizes. Custom rate: User configures a custom rate in % or Mbps.
Page 214 RXT-3900 e-Manual D07-00-111P Rev A00 90%). The frame loss test will now be performed at the new rate until there is zero frame loss at two consecutive rate settings. This means that the test will have to be performed at 80% (assuming that there was zero frame loss at 90%). Duration: Selectable in the range 5 to 999 seconds.
Page 215 RXT-3900 e-Manual D07-00-111P Rev A00 13.4.1.5 Starting/Stopping an RFC 2544 Measurement Once all configurations have been made, the user can start the RFC 2544 test (press the Start icon on the top right section of the screen). The following are two scenarios of how to prepare and start the unit for RFC 2544 testing. Note: If testing on the fiber ports, make sure the LASER is turned On before starting the test.
Page 216 RXT-3900 e-Manual D07-00-111P Rev A00 Summary tab: The following results including the Start (ST) and Elapsed (ET) times are displayed. Line Rate (bps): Negotiated rate of the interface (10M, 100M, or 1000M). This value is always fixed since it depends on the maximum capacity of the link under test, hence the test interface that is configured.
Page 217 RXT-3900 e-Manual D07-00-111P Rev A00 Go back to top Go back to TOC Throughput tab The Throughput tab displays the maximum throughput rate of the link under test. Results are displayed in graphical and table formats. Use the drop-down menu to change the display format. Graphical: Throughput results are displayed in a bar graph form Summary table and test log table display: byte size...
Page 218 RXT-3900 e-Manual D07-00-111P Rev A00 RFC 2544 Results - Throughput (Test Log Table) Go back to top Go back to TOC Latency and frame jitter measurements results are displayed in the following formats. Use the drop-down menu to select the Latency format: Graphical: Latency results displayed in line graph form (Latency [us] vs Frame size [bytes]).
Page 219 RXT-3900 e-Manual D07-00-111P Rev A00 RFC 2544 Results - Latency (Graphical) RFC 2544 Results - Latency (Test Log) RFC 2544 Results - Latency (Jitter Graphical)
Page 220 RXT-3900 e-Manual D07-00-111P Rev A00 RFC 2544 Results - Latency (Jitter Summary) RFC 2544 Results - Latency (Jitter Test log) Go back to top Go back to TOC Frame Loss tab: Frame loss displays the percentage of frames not received. Use the drop-down menu to select the Frame Loss format: Summary and Test log tables display test frame length, byte size, frame loss (%) from received traffic, and rate (%)transmitted.
Page 221 RXT-3900 e-Manual D07-00-111P Rev A00 RFC 2544 Results - Frame Loss (Summary) RFC 2544 Results - Frame Loss (Graphical) RFC 2544 Results - Frame Loss (Test log) Go back to top Go back to TOC Burst tab: Burstability (back-back) results are the number of frames successfully transmitted/received at the line rate. It is displayed in the following formats: Summary table: Displays Average Frame Count received for each test frame length Test log table: Displays Average Frame Count and Duration (seconds) for each test frame length...
Page 222 RXT-3900 e-Manual D07-00-111P Rev A00 RFC 2544 Results - Burstability (Summary) RFC 2544 Results - Burstability (Test Log) Go back to top Go back to TOC 13.4.3 Saving RFC 2544 Results Once the test has been stopped the results can be saved by pressing the Save key on the VePAL keypad.
Page 223 RXT-3900 e-Manual D07-00-111P Rev A00 Setup For Header, Frames, Thresholds, Throughput, Latency, Frame Loss, and Burst, please refer to Setup - Standard Mode. Background - General # of Back. Streams: From 1 to 7 streams RFC 2544 Test Stream (%): This is the max rate set in frame loss Background Stream # (%): Allocated Bandwidth per Stream: The total bandwidth for all streams cannot exceed 100% Total (%): Sum of all stream rates in % Setup - Background - General...
Page 224 RXT-3900 e-Manual D07-00-111P Rev A00 Starting/Stopping an Advanced SLA Mode Please see Starting/Stopping a RFC 2544 Test for information on starting/stopping the test. Go back to top Go back to TOC 13.4.5 Background Results - Advanced SLA Mode For information on Global and Per Stream Results in Advanced SLA Mode, please refer to Throughput Results.
Page 225 RXT-3900 e-Manual D07-00-111P Rev A00 Go back to top Go back to TOC 13.4.6 Peer-to-Peer and Asymmetric Testing Remote Partner Control When the local unit connects to the remote (peer) partner, it loads the same configuration profile (header, traffic, and frame size) to the remote partner, with the MAC and IP addresses inverted.
Page 226 RXT-3900 e-Manual D07-00-111P Rev A00 Mode: Select an asymmetric test configuration. Asymmetric Up: Tests traffic in the upstream direction (local to remote direction). Asymmetric Down: Tests traffic the downstream direction (remote to local direction). Asymmetric Up & Down: Test traffic in both upstream and downstream direction. Step 2-6: Make the following selections for the Controller and Remote units: Layer, IP Address, Subnet, Gateway, and VLAN tags.
Page 227 RXT-3900 e-Manual D07-00-111P Rev A00 Unit as Responder Setup Process Step 0-1: Tap on the white fields to setup the Local unit's IP Address, Subnet, and Gateway. Tap on Next to setup VLAN tags using the drop-down menu. Step 2: Review configuration selections. The option to Start testing or Reconfigure test settings becomes available. Responder Summary Screen Test Results P2P Test Results...
Page 228 RXT-3900 e-Manual D07-00-111P Rev A00 While the test is running the option to Stop and Save results appears as a right side button. After testing finishes, the option to Test More IPs with the same settings, Restart, or Save test results become available as right side buttons. For more information on saved test results, refer to the RXT-1200 platform manual for more information.
Page 229 Event Log Overview V-SAM (VeEX Service Activation Methodology) is an automated Ethernet service activation test feature conforming to the ITU-T Y.1564 standard, created to address and solve the deficiencies of RFC 2544: • RFC 2544 was limited to test at the maximum throughput line rate for a single service. SAM is able to run multiple services on a single 10/100/1000 or 10G Ethernet line at a bandwidth ranging from 0 to the line rate, allowing for more realistic stream testing.
Page 230 RXT-3900 e-Manual D07-00-111P Rev A00 Phase 1: Service Configuration Test The service configuration test is broken down into three steps. The steps are tested individually for all the services delivered on the same line. Step 1: Committed Information Rate (CIR) Test: Traffic is transmitted at the CIR for a short period of time and the received traffic is evaluated against the Service Acceptance Criteria (FLR, FTD, FDV) measured simultaneously.
Page 231 RXT-3900 e-Manual D07-00-111P Rev A00 services can be chosen for a 10 GE interface. Display: ULR or IR. See the Service Attributes section for more information. Service Configuration Test: Enable or Disable the configuration test. Service Performance Test: Enable or Disable the performance test. Service Configuration and Performance Tests can be enabled independently.
Page 232 RXT-3900 e-Manual D07-00-111P Rev A00 CIR Test Config.: Select Simple Test, Step Load Test, or Simple and Step. Simple Test: Starts the tests at the CIR. Step Load Test: Starts the test below the CIR and continues in steps until it reaches the CIR. Simple and Step Load Test: Step Load Test performs only if the Simple Validation test fails.
Page 233 RXT-3900 e-Manual D07-00-111P Rev A00 After making changes, tap Apply to All, for MPLS-TP configuration. Please see RFC 2544 Setup and follow the setup procedure to configure the remaining Header Settings for V-SAM. V-SAM Setup - Services - Header Settings V-SAM Setup - Services - EMIX Frame Size Settings V-SAM Setup - Services - MPLS-TP Settings Go back to top Go back to TOC...
Page 234 RXT-3900 e-Manual D07-00-111P Rev A00 Bandwidth Profile Parameters The Bandwidth Profile specifies how much traffic the customer is authorized to transmit and how the frames are prioritized within the network. In the Bandwidth table, the user specifies the following bandwidth criteria: CIR: Committed Information Rate.
Page 235 RXT-3900 e-Manual D07-00-111P Rev A00 Enabling/Disabling Tests A check next to the parameters in the Service Attributes table indicates that the test for the corresponding service is set to run. Tap on the box to remove the check and cancel the test for that service.
Page 236 Peer-to-Peer Setup Peer-to-Peer and asymmetric testing via the P2P Setup button is also available. Refer to Peer-to-Peer and Asymmetric Testing section for more information. X-loop is for looping non-VeEX networking equipment. Packet Capture To capture packets, tap on P1 Cap Start. Stopping packet capture automatically names and saves results in pcap format. A message displays the name of the saved file located in Files >...
Page 237 RXT-3900 e-Manual D07-00-111P Rev A00 Note: To run the test, make sure that traffic is being looped back at the far-end of the network under test. Configuration Test The Config. Tests tab lists the Pass/Fail status of each service and test. Tapping on the table brings up a screen with CIR, CIR/EIR and Policing Test results for the chosen Service.
Page 238 RXT-3900 e-Manual D07-00-111P Rev A00 CIR/EIR test: The test passes if the received IR value is between the CIR (minus the margin allowed by the FLR) and CIR+EIR. Policing Test - Service 1 Policing test: The test passes if the received traffic rate is at least at the CIR (minus the margin allowed by the FLR) but does not exceed the allowed CIR+EIR.
Page 239 RXT-3900 e-Manual D07-00-111P Rev A00 Performance Test The Service # tabs display min, mean, and max values for IR Mbps, FTD, FDV, Frame Loss Count, Frame Loss Ratio (%), Availability, and Errored Frame Count. Pass/Fail/Pending status of each test is displayed on the top of each table. IR Mbps, FTD, FDV, Frame Loss Count, Frame Loss Ratio (%), Out of Sequence Count definitions are listed in the Configuration Test section.
Page 240 RXT-3900 e-Manual D07-00-111P Rev A00 Go back to top Go back to TOC...
Page 241 RXT-3900 e-Manual D07-00-111P Rev A00 13.6 Throughput Testing (Multiple Streams) Setup General Settings MX Discover and Control Settings Per Stream Configurations Traffic Settings Error Injection Settings Alarm Injection Settings Summary Starting/ Stopping a Throughput Test Results Global Aggregate Results Per Stream Results Saving Results Overview: The throughput application (or the multiple streams application) performs the following measurements: throughput performance,...
Page 242 RXT-3900 e-Manual D07-00-111P Rev A00 Page 2: #of Streams: From 1 to 10 streams. Note: # of Streams can be specified either on Page 1 or Page 2. It will be reflected on both pages. Delay Measurement Mode: Disable, Round Trip Delay. Local One way delay measurement, Atomic one way delay, or GPS one way delay are also available depending on the Glock Synchronization device selected in the Setup (home menu) >...
Page 243 Peer-to-Peer Setup Peer-to-Peer and asymmetric testing via the P2P Setup button is also available. Refer to Peer-to-Peer and Asymmetric Testing section for more information. X-loop is for looping non-VeEX networking equipment. Packet Capture To capture packets, tap on P1 Cap Start. Stopping packet capture automatically names and saves results in pcap format. A message displays the name of the saved file located in Files >...
Page 244 RXT-3900 e-Manual D07-00-111P Rev A00 Multiple Streams - MAC/IP Address Setup If all of the streams are going to the same far-end unit, then the MAC/IP destination addresses must be the same on all of the streams. If any of the traffic streams are going to more than one far-end unit then ensure the correct MAC/IP destination addresses are configured for the respective streams.
Page 245 RXT-3900 e-Manual D07-00-111P Rev A00 Go back to top Go back to TOC 13.6.1.5 Error Injection Settings (Per Stream Configuration) Error injection can be performed during test. The type of errors and error injection are configured in the Error Injection tab. Once the test is running, error injection can be performed by pressing the Error Inject button on the right side of the screen.
Page 246 RXT-3900 e-Manual D07-00-111P Rev A00 Alarm Length: 1s, 10s, or 100s. Throughput Alarm Injection Setup Go back to top Go back to TOC 13.6.1.7 Summary The summary screen lists the source, destination and VLAN information of each stream. Tap on the appropriate box of each tab to reconfigure the source, destination, or VLAN information if desired.
Page 247 RXT-3900 e-Manual D07-00-111P Rev A00 Throughput Test - Summary (VLAN List) Throughput Test - Summary (Port List) Throughput Test - Summary (MPLS List)
Page 248 RXT-3900 e-Manual D07-00-111P Rev A00 OAM Discover Like MX Discover, OAM Discover can also be used to discover far-end test units without manually configuring the local or remote unit's destination address. If OAM is enabled on the test set, any link partner that supports the IEEE 802.3ah protocol will be discovered automatically and displayed under the OAM Discover tab.
Page 249 RXT-3900 e-Manual D07-00-111P Rev A00 Go back to top Go back to TOC 13.6.1.8 Starting/Stopping a Throughput (Multiple Streams) Test Once all configurations have been made, the user can start the Throughput test (press the Start icon on the top right section of the screen).
Page 250 RXT-3900 e-Manual D07-00-111P Rev A00 The Global Stream Summary screen displays: Stream number (#) Total received bandwidth per stream Errors/alarms associated with the stream Quality of Service (QoS) performance verification associated with each stream Throughput Results - Global Stream Summary QoS values are based on packet statistic thresholds for roundtrip delay, jitter, frame loss, and IP checksum from the ITU-T Y.1541 standard.
Page 251 RXT-3900 e-Manual D07-00-111P Rev A00 IP Network QoS Class Definitions and Network Performance Objectives (Classes 4-7) Go back to top Go back to TOC The Aggregate screen displays these parameters: Line Rate (Mbps): Negotiated rate of the interface (10M, 100M, or 1000M). This value is always fixed since it depends on the maximum capacity of the link under test, hence the test interface that is configured.
Page 252 RXT-3900 e-Manual D07-00-111P Rev A00 Go back to top Go back to TOC The Global Signal screen (fiber ports only) displays the optical level measured by the SFP or XFP transceiver. Page 1 displays the level measurement in dBm for the optical signal. Loss of Signal (LOS) and the Saturation level for optical signals are shown graphically including the level measurement in dBm.
Page 253 RXT-3900 e-Manual D07-00-111P Rev A00 Go back to top Go back to TOC The Global Alarms screen displays the Current and Total alarm count of all streams: LOS: Loss of Signal LOSync: Loss synchronization Service disruption associated with loss of signal: Current: Duration of the current service disruption Total: Total accumulated duration of the service disruptions Min/Max: Minimum and maximum duration of the service disruption events...
Page 254 RXT-3900 e-Manual D07-00-111P Rev A00 Go back to top Go back to TOC The Global Events screen displays the Time, Event Type, Number of Events, and Test Type. Throughput Results - Global Events The Global Traffic screen displays: Frame Type of all streams Traffic Type of all streams Frame size of all streams Throughput Results - Global Traffic - Frames...
Page 255 RXT-3900 e-Manual D07-00-111P Rev A00 Tap on the bar graph for frame and traffic distribution statistics. Throughput Results - Frames Frames tab: The following Frame distribution statistics are displayed in Count (#) and Percentage (%): Received (RX) frames: Total frames Test frames VLAN tagged frames Q-in-Q VLAN stacked frames...
Page 256 RXT-3900 e-Manual D07-00-111P Rev A00 Frame Size tab: The following Frame distribution statistics are displayed in Count (#) and Percentage (%): < 64 bytes frames 64-127 byte frames 128-255 byte frames 256-511 byte frames 512-1023 byte frames 1024-1279 byte frames 1280-1518 byte frames >...
Page 257 RXT-3900 e-Manual D07-00-111P Rev A00 The Per Stream Errors screen displays the Current and Total error count of each stream. Bit: Indicates errors related to test pattern (Bit Error or LSS [Pattern Loss]) BER: Bit Error Ratio FCS/CRC: Number of received frames with an invalid Frame Check Sequence (FCS) IP Checksum: Invalid IP Frame Check sequence TCP/UDP Checksum (Layer 4 only) Jabber frames: Number of received frames larger than 1518 bytes containing an invalid FCS...
Page 258 RXT-3900 e-Manual D07-00-111P Rev A00 The Per Stream Events screen displays a Date and Time stamped record of bit errors, alarms and other anomalies pertaining to each stream. Throughput Results - Events per Stream Go back to top Go back to TOC The Per Stream Traffic screen displays the frame type and frame size distribution pertaining to each stream.
Page 259 RXT-3900 e-Manual D07-00-111P Rev A00 sampling points for the delay. Round Trip Delay Results and Histogram Throughput Results - Delay per Stream Throughput Results - Round Trip Delay Histogram One Way Delay Results and Histogram (Table and Graph) Throughput Results - Delay per Stream (One Way Delay) Throughput Results - One Way Delay Histogram Graph...
Page 260 RXT-3900 e-Manual D07-00-111P Rev A00 Throughput Results - One Way Delay Histogram Table Go back to top Go back to TOC The Per Stream Rate screen displays the frame rate and data rate pertaining to each stream. Tap on either dial to see rate details.
Page 261 RXT-3900 e-Manual D07-00-111P Rev A00 Go back to top Go back to TOC 13.6.2.4 Saving Throughput (Multiple Streams) Results Once the test has been stopped the results can be saved by pressing the Save key on the VePAL keypad. The results will be saved and named automatically.
Page 262 RXT-3900 e-Manual D07-00-111P Rev A00 13.7 Ethernet OAM Testing Ethernet OAM provides automatic defect detection, fault management and performance monitoring tools for network links and end-to-end Ethernet Virtual Circuits (EVC). The OAM service supports IEEE 802.3ah, IEEE 802.1ag, ITU-T Y.1731, and G.8113.1. Go back to top Go back to TOC 13.7.1 OAM Setup 13.7.1.1 Link Level 802.3ah OAM Setup...
Page 263 RXT-3900 e-Manual D07-00-111P Rev A00 take. For more on acceptable Active/Passive mode combinations and actions, see section 802.3ah OAM Discovery. Vendor OUI and SPI Organization Unique identifier and Vendor specific information (similar to MAC address fields). Max PDU Length Advertised Max OAM PDU size (64 to 1518). After Discovery, the lowest of the local and remote will be used. PDU Rate 100 to 10000 ms between consecutive OAM PDUs.
Page 264 RXT-3900 e-Manual D07-00-111P Rev A00 Under the Service Level OAM tab, the user has the option of starting the 802.1ag, Y.1731, or G.8113.1 test. Fill out the given parameters. MD Name, MA Name, VLAN, and MD Level input values must match for both connected OAM devices in order for the test to work.
Page 265 RXT-3900 e-Manual D07-00-111P Rev A00 Maintenance Domain (MD) : Management space on a network that is owned and operated by a single network provider. There is a maintenance level (from 0 to 7) to define the hierarchical relationship between domains. Maintenance domains can be nested but never intersect.
Page 266 RXT-3900 e-Manual D07-00-111P Rev A00 Go back to top Go back to TOC OAM Services Setup Under the same tab, OAM Services pertaining to 802.1ag, Y.1731, and/or G.8113.1 can be enabled. The tests listed include: Continuity Check (CCM) Loopback (LBM/LBR) Link Trace (LTM/LTR) Loss Measurement (LMM/LMR) (Y.1731 and G.8113.1) Delay Measurement (DMM/DMR) (Y.1731 and G.8113.1)
Page 267 RXT-3900 e-Manual D07-00-111P Rev A00 Fault verification and isolation – Loopback: Verify connectivity to a specific point in the message. Equivalent to ping test. Continuity Check Messages (CCM) CCM Messages are multicast messages sent from MEP to MEP at configurable intervals. Loss of continuity is detected after no CCM is received for 3.5 times the CCM interval.
Page 268 RXT-3900 e-Manual D07-00-111P Rev A00 G.8113.1 Performance Management Functions MPLS-TP MPLS-TP over Ethernet with PW Label MPLS-TP is a Layer 2 technology that combines the benefits of MPLS and removes the complexity of IP networking. It uses the MPLS Label switching mechanism, but with static route provisioning (no Label Distribution Protocol LDP or RSVP-TE). MPLS-TP supports an advanced set of OAM functions and path protection mechanisms.
Page 269 RXT-3900 e-Manual D07-00-111P Rev A00 LTM Diagram (LTM/LTR) Link Trace Message Format Link Trace Response Format Loopback Message (LBM/LBR) LBM (Loopback Message) are unicast messages transmitted on demand to a destination MAC address. A destination address responds with an LBR (Loopback Reply Message). LBM Diagram (LBM/LBR) Loopback Message Format...
Page 270 RXT-3900 e-Manual D07-00-111P Rev A00 LBM/LBR, LTM/LTR Settings - Service Level OAM (Page 3) Link Trace (LTM/LTR) and Loopback Message (LBM/LBR) Config. Parameters Destination MEP: Sends LTM/LBM to the destination MEP as configured on Page 1. MAC: Sends LTM/LBM to a destination MAC address. Priority: 802.1p priority in the LTM/LBM VLAN Tag.
Page 271 RXT-3900 e-Manual D07-00-111P Rev A00 Destination MEP: Sends LMM/DMM to the destination MEP as configured on Page 1 MAC: Sends LMM/DMM to a destination MAC address Priority: 802.1p priority in the LMM/DMM VLAN Tag Destination MAC: Configure the destination MAC address used for the LMM/DMM. This field is only used if Destination is set to MAC.
Page 272 RXT-3900 e-Manual D07-00-111P Rev A00 DMM and DMR frames contain timestamp info. Go back to top Go back to TOC 13.7.2 OAM Results 13.7.2.1 Link OAM Results Link OAM Discovery The discovery page lists Local (the current test unit) and Remote (far-end device) parameters. OAM - Link - Discovery (Page 1) Mode: Lists Active or Passive mode configuration.
Page 273 RXT-3900 e-Manual D07-00-111P Rev A00 OAM PDU OAM PDU Transmitted and received 802.3ah OAM PDU are displayed with other Link OAM statistics: Information: Information OAM PDU acts as a "heartbeat" message. Discovery must be restarted if no OAM PDU is received after 5 seconds.
Page 274 RXT-3900 e-Manual D07-00-111P Rev A00 OAM CCM Results RDI, LOC, XCON, UNEXP, and Alarm will display an I or A status with I = Inactive, A = Active. MPID: MEP ID of the remote MEP. Remote MAC: MAC address of the remote MEP. RDI: The CCM received contains the RDI flag set.
Page 275 RXT-3900 e-Manual D07-00-111P Rev A00 OAM LTM Results Action: RlyHit indicates that the LTM has reached the destination MAC/MEP (i.e., final point) MAC: MAC address of the responder TTL: TTL field on the response, indicated how many hops have been traversed Flags: If set, indicates that only MAC addresses learned in a Bridge's Filtering Database, and not information saved in the MIP CCM Database, is to be used to determine the Egress Port Y.1731 and G.8113.1 Performance Management Functions Results...
Page 276 RXT-3900 e-Manual D07-00-111P Rev A00 OAM LMM Parameters OAM - Service - DMM OAM - DMM Message OAM DMM Parameters DMM Status: Lists status (In progress, Fail, or Complete) Delay Samples: Number of frames transmitted Average Delay: Average round trip delay over the number of delay samples Average Variation: Average round trip delay variation over the number of delay samples Last Delay: Last round trip delay value measured Last Variation: Last round trip delay variation value measured...
Page 277 RXT-3900 e-Manual D07-00-111P Rev A00 13.8 Monitor (Pass Through) Pass through monitor mode enables the test set to be used for long term in-service testing. This allows for bi-directional monitoring of up to full gigabit Ethernet line rate on the two 1000Base-X ports or the two 10/100/1000T ports. Pass Through functionality allows the following: In-line traffic monitoring in both directions Long or short term network monitoring for troubleshooting network traffic problems...
Page 278 RXT-3900 e-Manual D07-00-111P Rev A00 Monitor Mode Results Monitor Mode Results features the same statistics as BERT Results. Please see BERT Results for more information. The Status screen displays the following statistics: Utilization (%) CRC Errors Service Disruption (ms) 13.9 Advanced Monitoring The Advanced Monitoring application analyzes incoming traffic and filters for specified header types.
Page 279 RXT-3900 e-Manual D07-00-111P Rev A00 Repeat steps 1-5 until the number of desired subfilters and filters are enabled. When finished, press the green Start button to begin monitoring. The Summary lists the Enable/Disable status of all filters. Advanced Monitoring Setup - Summary Results Advanced Monitoring - Results - Global The Global tab displays a summary of all filters and information on incoming frames such as the following:...
Page 280 RXT-3900 e-Manual D07-00-111P Rev A00 The Per Filter tab displays received traffic information for each individual filter. Measurements include RX Total Frames RX Frame Rate (fps) RX Total Bytes RX CRC Error RX IP Checksum Error RX TCP/UDP Checksum Error Advanced Monitoring - Results - Pass Through Result The Pass Through Result tab records the same measurements featured in the Throughput application.
Page 281 RXT-3900 e-Manual D07-00-111P Rev A00 The Loopback application in the main menu allows the user to establish a manual loopback on the test set. The loopback function is used when an end-to-end test needs to be performed with one of the test partners in software loopback mode. The loopback function will loopback the incoming traffic to the test set back into the network under test.
Page 282 RXT-3900 e-Manual D07-00-111P Rev A00 Go back to top Go back to TOC...
Page 283 RXT-3900 e-Manual D07-00-111P Rev A00 13.11 Scan VLAN Scan Setup VLAN Scan scans up to 4096 VLAN IDs for switch configuration and displays VLAN ID bandwidth rates, useful for identifying top bandwidth users based on VLAN ID. Monitor mode monitors up to eight live traffic streams (in terminate mode) and filters them based on VLAN ID configuration, providing key traffic metrics such as frame type, rates, and errors and alarms.
Page 284 RXT-3900 e-Manual D07-00-111P Rev A00 Monitoring Traffic To only receive traffic streams meeting specific criteria, stop the scan and go to Setup > Monitor tab to configure filter criteria. Tap on a parameter box to configure it. Place a check next to a parameter to only receive traffic that matches this criteria. For descriptions of each parameter, please see Setup for Throughput Testing (Multiple Streams).
Page 285 RXT-3900 e-Manual D07-00-111P Rev A00 Monitor Per Stream Results Note: If no stream information is displayed in the Per Stream tab, return to the VLAN ID tab (Results > Scan > VLAN ID) and verify that the VLAN ID boxes are checked. Go back to top Go back to TOC 13.12 Packet Capture 13.12.1 Packet Capture Setup...
Page 286 RXT-3900 e-Manual D07-00-111P Rev A00 Packet Capture In Progress Packet Capture Save Select from the following Filter options: MAC and IP Mode Disable: All IP packets to and from the unit are captured MAC and IP: Only traffic frames matching the MAC and IP source and destination addresses are captured UDP and TCP: Only TCP, Only UDP or both TCP/UDP are captured Press the green Start button to begin packet capture.
Page 287 RXT-3900 e-Manual D07-00-111P Rev A00 Go back to top Go back to TOC 13.12.2 Packet Capture Results To finish packet capture and manage packet capture results, press Stop. To save result packets and view results, tap YES when asked to view results. Results are saved in PCAP format and are automatically named.
Page 288 RXT-3900 e-Manual D07-00-111P Rev A00 Autoscripting Setup File Prefix: Prefix added to name of test results. The default prefix is "Autoscript." If Alarm/Error detected: Choose to Continue or Exit testing if an alarm/error is detected. Profile: Select Default, Last Configuration, or None. Testing duration can be set for seconds, minutes, hours, or days.
Page 289 RXT-3900 e-Manual D07-00-111P Rev A00 File Manager - Saved Results Go back to top Go back to TOC 13.14 L2 Control Protocol Transparency Test (L2CP) L2CP tests network transparency to Layer 2 Control Protocols by transmitting a number of preselected L2 control protocol frames from Test set A and making sure that they are received on Test set B through the network under test.
Page 290 RXT-3900 e-Manual D07-00-111P Rev A00 Setup Press the green Start button to start the test with previous settings or NEXT to continue with the step-by-step setup process. Procedure Step 1 Transmit: Unit is setup to transmit and Receive L2CP frames. If the unit is selected as a transmitter, the option to Automatically Loop Up/Down becomes available.
Page 291 RXT-3900 e-Manual D07-00-111P Rev A00 If the unit is set to Receiver mode, setup for the receiver is complete. For Transmit mode, configure the MAC address that will be used as MAC Source for all the test frames or press the “MAC Source” function key to overwrite with the MAC address of the test set. L2CP Transparency Test - Transmitter - Step 3 Step 4 Configure the VLAN Tag(s) that will be used for the test frames.
Page 292 RXT-3900 e-Manual D07-00-111P Rev A00 Step 6 Select the type of frames that will transmitted during the test. Please see the List of Protocols section for more information. Add a check mark to each L2CP to test or select all. L2CP Transparency Test - Transmitter - Step 6 When the test starts, the screen displays L2CP frames transmitted and received for each protocol.
Page 293 RXT-3900 e-Manual D07-00-111P Rev A00 Remote Partner Control Tool The Loop Control button brings up the Remote Partner Control Tool. Input the MAC destination, VLAN tags, VLAN ID, and Priority. Press the Loop Up button to send a loop up command to the selected remote unit. Loop Control - L2CP Loopback List of Protocols...
Page 294 RXT-3900 e-Manual D07-00-111P Rev A00 Go back to top Go back to TOC 13.15 IP Monitoring...
Page 295 RXT-3900 e-Manual D07-00-111P Rev A00 The IP Monitoring tab displays incoming bandwidth statistics. Top talkers displayed in Net Wiz are listed from highest to lowest bandwidth consumption. Measurements featured in IP Monitoring are the same as BERT Results. Please see BERT Results.
Page 296 RXT-3900 e-Manual D07-00-111P Rev A00 Net Wiz >Trace Route >Setup Go back to top Go back to TOC...
Page 297 13.16 PESQ Testing Introduction Located in a central location, the VeEX PESQ server allows technicians using the VePal 100+ or 300 series field test set to establish a VoIP or ISDN connection and measure end to end voice quality. VeEX’s PESQ Server brings the power of ITU-T P.862 PESQ algorithm to live network field testing. VeEX’s PESQ Server accepts up to 50 simultaneous connections from compatible VeEX VePAL 300 or 100+ series products.
Page 298 RXT-3900 e-Manual D07-00-111P Rev A00 A detailed connection report is also generated: Voice Quality Trend Analysis: Post processing tools allow trending analysis over time. Procedure: Place VoIP to PESQ Server.
Page 299 RXT-3900 e-Manual D07-00-111P Rev A00 Upstream, Roundtrip and Average voice quality measurement is displayed. Go back to top Go back to TOC...
Page 300 RXT-3900 e-Manual D07-00-111P Rev A00 14.0 Fiber Channel Fiber Channel Applications Introduction Enterprises worldwide rely on complex IT infrastructures to store and maintain critical data and applications. Storage Area Networks (SANs) have evolved to improve availability, resiliency, performance, modularity and geographical distribution of data storage systems and Fiber Channel is an important technology for linking SANs together.
Page 301 RXT-3900 e-Manual D07-00-111P Rev A00 The Fibre Channel option addresses all the transport layers by measuring the optical power level and supporting the generation/analysis of bit errors, order sets, frame delimiters, frame transmission, and the generation of primitive sequences. User defined bytes, fixed test patterns or industry-standard PRBS patterns can be selected and inserted into the payload field depending on the test layer.
Page 302 RXT-3900 e-Manual D07-00-111P Rev A00 Go back to top Go back to TOC 14.1.2 Port Configuration Fiber Channel - Port Setup On the Port tab, select from the following options to configure your FC port: Speed: Selectable test rates via drop-down menu: 1G (1.0625 Gbps) 2G (2.125 Gbps) 4G (4.25 Gbps)
Page 303 RXT-3900 e-Manual D07-00-111P Rev A00 Transmitter: For each frame transmitted, BB_Credit_CNT is incremented by 1. Receiver: The value is decremented by 1 for each R_RDY Primitive Signal received from the other port. Clock offset (ppm) (16G only): The frequency may be offset in parts per million at +/- 150ppm. Go back to top Go back to TOC Fiber Channel - Measurement Setup On the Measurement tab, select from the following options to setup your FC measurements:...
Page 304 RXT-3900 e-Manual D07-00-111P Rev A00 recorded in an event log which is date and time stamped. All results can be saved and exported into ReVeal MX for analysis or customer test report generation. Fiber Channel Layers The Open Systems Interconnect (OSI) model breaks communications into seven layers namely, Physical, Data Link, Network, Transport, Session, Presentation, and Application.
Page 305 RXT-3900 e-Manual D07-00-111P Rev A00 FC-3 defines common services that may be available across multiple ports in a node. This level has no standard now. Services for multiple ports on one node FC-4 defines the mapping between the lower levels of Fibre Channel, and the command sets that use Fibre Channel. Upper Layer Protocol (ULP) mapping Small Computer System Interface (SCSI) Internet Protocol (IP)
Page 306 RXT-3900 e-Manual D07-00-111P Rev A00 FC-2: Only FC-2 frames have a header, so these fields are not available for FC-1 frames. Defines the framing rules and mechanisms for controlling the different service classes. The following building blocks are defined by the standard: Ordered Set Frame Sequence...
Page 307 RXT-3900 e-Manual D07-00-111P Rev A00 The CRC field is calculated on the Frame Header and Data Field prior to encoding for transmission and after decoding upon reception Frame Delimiters A frame delimiter is an Ordered Set that immediately precedes or follows the contents of a frame. Separate and distinct delimiters shall identify the start of a frame and the end of a frame and shall be recognized when a single Ordered Set is detected.
Page 308 RXT-3900 e-Manual D07-00-111P Rev A00 the first frame of a Sequence for Class 3 Service. SOF Fabric (SOFf) SOF_f: Contains a code value of 0x28 indicating SOF Fabric. If an Nx_Port or Fx_Port receives a Class F frame, indicated by an SOFf delimiter, it shall be discarded by the Nx_Port or Fx_Port. The receiving Nx_Port or Fx_Port may send an R_RDY.
Page 309 RXT-3900 e-Manual D07-00-111P Rev A00 FC-1 Payload (test pattern) Layer 1 test patterns are formatted using the 8B/10B symbol format and include the PCS layer as part of the BER pattern. CRPAT, CSPAT, and CJTPAT test patterns according to NCITS-TR-25-1999 and MJSQ, are designed to evaluate frequency fluctuations, transceiver noise and phase jumps caused by jitter and other anomalies.
Page 310 RXT-3900 e-Manual D07-00-111P Rev A00 BERT Testing Tips A BERT samples every incoming bit and looks for something that doesn't occur often. This traditional method typically used in SONET/SDH measurements, can however take a very long time. For example, in a 1Gbps Fiber Channel system, errors occur on average once every 1000 s –12 (about 17 Min) for 1x10 BER, so you would need to detect at least 10 to 100 errors before you...
Page 311 RXT-3900 e-Manual D07-00-111P Rev A00 FC-2 Header Format The Frame Header is the first field of the frame content and immediately follows the SOF delimiter. The Frame Header is used to control link operations and device protocol transfers as well as detect missing or out of order frames. The values of each field can be edited depending on network setup and test scenario.
Page 312 RXT-3900 e-Manual D07-00-111P Rev A00 S_ID Address Identifier: The S_ID is a three-byte field (Word 1, Bits 23-0) that contains the address identifier of the source Nx_Port. Type (Data Structure Type): The data structure type (TYPE) is a one-byte field (Word 2, Bits 31-24) that identifies the protocol of the frame content for Data frames.
Page 313 RXT-3900 e-Manual D07-00-111P Rev A00 Go back to top Go back to TOC Error Injection Setup Error injection can be performed during a test. The type of errors and error injection rate or flow are configured in the Error Injection tab.
Page 314 RXT-3900 e-Manual D07-00-111P Rev A00 General tab (Throughput only) RTD Measurement: Enable or Disable Round Trip Delay Measurement SDT Measurement Trigger (>µs): Any inter-frame gap that is equivalent or greater than the configured threshold will trigger the SDT measurement. This is useful if a known threshold is expected from a given network under test. For example, if the known switchover time is 50ms, the trigger can be set to a value slightly below 50ms to assure that the SDT is measured.
Page 315 RXT-3900 e-Manual D07-00-111P Rev A00 FC - Throughput - Summary Go back to top Go back to TOC Errors Current and Total values for: Bits: Number of bits received BER: Bit error ratio based on PRBS received or ratio of payload bit errors to total received payload bits Symbol: Symbol error or Code Violation is a bit error or disparity error occurring in a primitive sequence or Ordered Set FCS/CRC: Number of frames with either a bad or missing CRC or Frame Check Sequence Oversize: Number of Oversize frames received (>...
Page 316 RXT-3900 e-Manual D07-00-111P Rev A00 Throughput - Errors (Page 1) Throughput - Errors (Page 2) Go back to top Go back to TOC Alarms Current and Total values for: Number of times the Link has transitioned to a Loss of Signal state in the measurement interval. Generally loss of optical signal. LOS (ms): LOSync: Number of times the Link has transitioned to a Loss of Sync state in the measurement period Pattern Loss: Number of times test pattern or test sequence was lost...
Page 317 RXT-3900 e-Manual D07-00-111P Rev A00 Current: Current disruption in ms Total: Total measurement period Last: Last disruption measurement time Min/Max: Minimum and Maximum disruption time No. of Occurrences: A count of the disruption events over the measurement period FC-BERT/FC-Throughput - Alarms Go back to top Go back to TOC Service Disruption Test (SDT) (Throughput only) Total: Total cumulative service disruption for the duration of the test.
Page 318 RXT-3900 e-Manual D07-00-111P Rev A00 Throughput - Events Go back to top Go back to TOC Traffic Distribution Overview Graphical representation of: Frame type: Test frames in BER mode Traffic type: Class of service set by the SOF delimiter Frame size: FC-1 mode - the frame size is determined by the test sequence being used FC-2 mode - the frame size corresponds to the frame size configured in the traffic menu FC-BERT/FC-Throughput - Traffic Summary...
Page 319 RXT-3900 e-Manual D07-00-111P Rev A00 Go back to top Go back to TOC Traffic Distribution Details - Frames RX (Received) Frames Total: Total number of frames received Test: Number of test frames received Non-Test: Number of non-test frames received TX (Transmitted) Frames Total: Number of test frames transmitted Flow Control: Flow control is the FC-2 control process to pace the flow of frames between Nx_Ports, an Nx_Port and the Fabric and within the Fabric to prevent overrun at the receiver.
Page 320 RXT-3900 e-Manual D07-00-111P Rev A00 Go back to top Go back to TOC Frame Size Distribution Indicates the number and percentage of different frame sizes received during the test period. FC-BERT/FC-Throughput - Frame Size Distribution Go back to top Go back to TOC Delay Frame Arrival Delay or Latency is the round-trip delay experienced by a frame as it traverses the fiber link or network.
Page 321 RXT-3900 e-Manual D07-00-111P Rev A00 FC - Throughput - Delay Go back to top Go back to TOC Frame Rate Summary Graphical representation of the Frame rates and Data rates. FC-BERT/FC-Throughput - Frame Rate Summary Go back to top Go back to TOC Frame Rate Details Tabular representation of the Transmitted and Received frames and the corresponding Data Rates in Mbps.
Page 322 RXT-3900 e-Manual D07-00-111P Rev A00 Go back to top Go back to TOC Signal Level (Page 1) The Signal tab displays the Level and Frequency screen. Page 1 displays the level measurement Loss of Signal (LOS), and the Saturation level for optical signals is shown graphically, including the level measurement in dBm. FC-BERT/FC-Throughput Signal - Level (Page 1) Optical Information (Page 2) Page 2 displays the Optical module XFP information which includes Vendor name, Part number, and Optical Wavelength.
Page 323 RXT-3900 e-Manual D07-00-111P Rev A00 Frequency (Page 3) Page 3 displays the Frequency information which includes: Current [bps]: Indicates current frequency level. Offset [ppm]: Indicates the frequency offset. Min [ppm]: Indicates the minimum frequency detected. Max [ppm]: Indicates the maximum frequency detected. FC-BERT/FC-Throughput Signal - Frequency (Page 3) Go back to top Go back to TOC 14.3 RFC 2544...
Page 324 RXT-3900 e-Manual D07-00-111P Rev A00 The Loopback function can be found on the Fiber Channel Home menu. FC-1/2 Manual Loopback Setup Modes of operation: Manual and Responder (future) Mode (FC layer): FC-1 or FC-2 Layer loopbacks are supported. In FC-2 mode, the destination and source IDs (D_ID and S_ID) are swapped including any other relevant Header fields (e.g., OX_ID, RX_ID, etc.).
Page 325 RXT-3900 e-Manual D07-00-111P Rev A00 2. Enter a name for the results file, and then press Apply to save the file. The file is saved under the Files folder on the unit in pcap format. The file can be later exported to a PC and analyzed using Wireshark. Capture Mode Filter Capture Save...
Page 326 RXT-3900 e-Manual D07-00-111P Rev A00 15.0 CPRI Testing Overview Interface Specifications CPRI Testing Overview CPRI Layer 1 Framed Testing Setup Alarm and Error Injection Results L1 Round Trip Delay CPRI Layer 2 Framed Testing Setup Results CPRI Round Trip Delay SDT Results Control Words Frame Capture...
Page 327 RXT-3900 e-Manual D07-00-111P Rev A00 Protocol Stack Go back to top Go back to TOC Physical Layer The following Line bit rates are defined from the standard: Line Coding: 8B/10B line coding shall be used for serial transmission according to IEEE 802.3-2005, clause 36. (Same encoding as used for Gigabit Ethernet and Fibre Channel) Bit Error Correction/Detection: The physical layer is designed in such a way that a very low bit error ratio can be achieved without expensive forward...
Page 328 RXT-3900 e-Manual D07-00-111P Rev A00 15.2 CPRI Testing Overview Test Ports RXT-3900 Module Test Modes Refer to the latest specification sheet for a breakdown of available test modes for each platform and module. Available test modes vary depending on the test platform and module, but may include the following: CPRI/OBSAI Unframed CPRI Layer 1 Framed (CPRI Layer 1 Testing) CPRI Layer 2 (CPRI Layer 2 Testing)
Page 329 RXT-3900 e-Manual D07-00-111P Rev A00 15.3 CPRI Layer 1 Framed Testing Refer to the RXT-1200 Platform manual Getting Started for more information on how to launch test applications. The test application button, indicated by the 1 and 2 tabs, shows the selected CPRI speed rate. In the example below, 3.072G is the CPRI speed rate.
Page 330 RXT-3900 e-Manual D07-00-111P Rev A00 Interface: CPRI Clock Selection Internal/External. If the unit is set as Master emulation mode, the following options are available: Internal: The clock for the transmitter is derived from the internal clock. The internal clock has an accuracy of +/- 3.5ppm conforming to G.812 recommendations.
Page 331 RXT-3900 e-Manual D07-00-111P Rev A00 Pattern Independent TX/RX test Pattern selection. PRBS 2^23-1 (normal or inverted) or PRBS 2^31-1 (normal or inverted) Go back to top Go back to TOC Measurements Measurements Setup Configure a test to run for a fixed duration or a delayed start. Mode: Manual, Timed, and Auto selections are available.
Page 332 RXT-3900 e-Manual D07-00-111P Rev A00 Go back to top Go back to TOC General General Setup Audible Alarm: OFF / ON. A sound will generate every time there is an alarm. Results on start: OFF / ON. Shows the results screen upon pressing Start. Auto Save: OFF / ON.
Page 333 RXT-3900 e-Manual D07-00-111P Rev A00 Setup 1. Set Enable to ON to activate testing. 2. Set a limit time and gate time. Limit and Gate Time counters begin at the onset of the first valid event. Limit Time: Specifies pass/fail criteria for SDT events. This represents the acceptable amount of time for the customer to experience a service disruption.
Page 334 RXT-3900 e-Manual D07-00-111P Rev A00 Alarm and Error Injection The alarm/error section features a range of different anomalies that can be generated into the transmit signal. Alarms and errors can be inserted any time during testing by tapping on the red Alarm and Error Inj. buttons on the right side of the screen.
Page 335 RXT-3900 e-Manual D07-00-111P Rev A00 The Summary tab displays a summary of test results and parameters. At a glance, the user is able to see if there are any alarms, errors, or signal failure pertaining to the signal and its payload. Alarms and Errors The Error/Alarm tab brings up several pages showing the errors and alarm status.
Page 336 RXT-3900 e-Manual D07-00-111P Rev A00 Page 2 lists CPRI Errors/Alarms associated with the signal under test. Some options may not be available depending on the platform and module. LOS: Loss of Signal detection in seconds Code: 8b/10b code violation detected count and rate Running Disparity: 8b/10b running disparity error K30.7: Control word K30.7 detection LOF: Loss of framing seconds detected if invalid Z.0.0 sync byte is received...
Page 337 RXT-3900 e-Manual D07-00-111P Rev A00 The Signal tab brings up the frequency and level result screen. Page 1 displays the level measurement. Loss of Signal (LOS) and the Saturation level for optical signals is shown graphically including the level measurement in dBm. Frequency (Page 2) Frequency: The received signal frequency and offset is measured and displayed.
Page 338 RXT-3900 e-Manual D07-00-111P Rev A00 Page 4 displays the Optical module (SFP or XFP) Power Measurement Graph. Signal - Optical (Page 4) Go back to top Go back to TOC Histogram The Histogram tab a historical record of the Alarms and Errors recorded during the measurement interval. A dedicated Page is available for CRPI and BERT errors and alarms.
Page 339 RXT-3900 e-Manual D07-00-111P Rev A00 Go back to top Go back to TOC Graph The Graph tab brings up the screen displaying a log of the Errors recorded during the measurement interval. A dedicated page is available for Code and Bit error rates over time. Scroll through the various pages to display the anomaly of interest.
Page 340 RXT-3900 e-Manual D07-00-111P Rev A00 If SDT is enabled in Setup, the SDT tab will display time measurements of detected errors/alarms specified by the user in SDT setup. SDT Measurement ends after the Gate time is elapsed, to allow the capture of multiple smaller events. The total time from the beginning of the first event to the end of the last event (within the Gate Time) is the reported SD time.
Page 341 RXT-3900 e-Manual D07-00-111P Rev A00 Round Trip Delay In Progress With a loopback at the far-end, the test set inserts a bit error in the transmitted data stream and measures the time it takes for the error to be received in order to evaluate round trip delay. This measures the total fiber length and equipment delay combined. The loopback can be fiber optics or logical (triggered inside network elements).
Page 342 RXT-3900 e-Manual D07-00-111P Rev A00 15.4 CPRI Layer 2 Framed Testing Refer to the RXT-1200 platform manual Getting Started section for more information on how to launch test applications. CPRI Layer 2 Main Menu Go back to top Go back to TOC 15.4.1 Setup Setup Menu Configure the following:...
Page 343 RXT-3900 e-Manual D07-00-111P Rev A00 Interface: CPRI Clock Selection Internal/External (Master mode only). Slave uses RX signal recovered clock. If the unit is set as Master emulation mode, the following options are available: Internal: The clock for the transmitter is derived from the internal clock. The internal clock has an accuracy of +/- 3.5ppm conforming to G.812 recommendations.
Page 344 RXT-3900 e-Manual D07-00-111P Rev A00 Control and Management (C&M) channel configuration: Slow C&M Rate: None: HDLC channel disabled Configurable rate: 240kb/s to 480 kb/s HDLC channel data rate depending on CPRI Link speed Fast C&M Enabled: Ethernet channel, configurable start of Ethernet channel pointer in Control word or channel disabled. OFF: Ethernet Channel disabled ON: Ethernet Channel enabled, configure Ethernet pointer location from 20 to 63 Note: Auto-negotiation can be used for Master/Slave to negotiate their maximum C&M channels capabilities...
Page 345 RXT-3900 e-Manual D07-00-111P Rev A00 Configure a test to run for a fixed duration or a delayed start. Mode: Manual, Timed, and Auto selections are available. Manual: This is linked to the Start/Stop function. Timed: The test duration can be set by the user. The test duration can be set in seconds, minutes, hours or days. The test is activated by the Start/Stop function.
Page 346 RXT-3900 e-Manual D07-00-111P Rev A00 Results on start: OFF / ON. Shows the results screen on pressing the green Start button. Auto Save: OFF / ON. Automatically Save the test results. Measurement Clock Source: Select the Measurement clock source used for Frequency measurement. For Master: Internal or TX clock source (if external clock source is used).
Page 347 RXT-3900 e-Manual D07-00-111P Rev A00 The alarm and error functions are used in conjunction with the drop-down menu which has dedicated buttons for error injection and alarm generation. The alarm section features a range of different anomalies that can be generated in the transmit signal. Alarm generation modes include: CPRI Alarms: LOS: Trigger a Loss of Signal event (Laser OFF)
Page 348 RXT-3900 e-Manual D07-00-111P Rev A00 Summary The Summary tab displays a summary of test results and parameters. At a glance, the user is able to see if there are any alarms, errors, or signal failure pertaining to the signal and its payload. Alarms and Errors The Error/Alarm tab brings up several pages showing the errors and alarm status.
Page 349 RXT-3900 e-Manual D07-00-111P Rev A00 Errors/Alarms (Page 2) - CPRI Page 2 lists CPRI Errors/Alarms associated with the signal under test. Some options may not be available depending on the platform and module. CPRI (Page 2) LOS: Loss of Signal detection in seconds Code: 8b/10b code violation detected count and rate Running Disparity: 8b/10b running disparity error K30.7: Control word K30.7 detection...
Page 350 RXT-3900 e-Manual D07-00-111P Rev A00 Go back to top Go back to TOC Signal Signal (Page 1) The Signal tab brings up the frequency and level result screen. Page 1 displays the level measurement. Loss of Signal (LOS) and the Saturation level for optical signals is shown graphically including the level measurement in dBm. Page 2 includes: Frequency: The received signal frequency and offset is measured and displayed.
Page 351 RXT-3900 e-Manual D07-00-111P Rev A00 Signal (Page 3) Signal - Optical Information (Page 3) Page 3 displays the Optical module (SFP or XFP) information which includes Vendor name, Part number, and Optical Wavelength. Signal - Optical Information (Page 4) Page 4 displays the Optical module (SFP or XFP) Power Measurement Graph. Signal (Page 4)
Page 352 RXT-3900 e-Manual D07-00-111P Rev A00 Go back to top Go back to TOC Histogram The Histogram tab displays a historical record of the Alarms and Errors recorded during the measurement interval. A dedicated Page is available for CPRI and BERT errors and alarms. Histogram (Page 1) Go back to top Go back to TOC Graph...
Page 353 RXT-3900 e-Manual D07-00-111P Rev A00 Go back to top Go back to TOC 15.4.3 CPRI Round Trip Delay CPRI Standard Cable Delay Measurement reference points: Toffset = Frame offset delay between Slave RX and Slave TX T 1,4 = Frame delay between Master TX and Master RX Cable Delay (round trip) = T 1,4 –...
Page 354 RXT-3900 e-Manual D07-00-111P Rev A00 Go back to top Go back to TOC 15.4.4 SDT (Service Disruption Test) Results Refer to SDT Results in the CPRI Layer 1 Framed section for more information on test results. Go back to top Go back to TOC 15.4.5 Control Words Display of Control words content in the 64 Subchannels.
Page 355 RXT-3900 e-Manual D07-00-111P Rev A00 Go back to top Go back to TOC 15.4.6 Frame Capture The test set must be set to Slave mode or use the Master’s ref. Clock. Capture up to 5000 Hyperframes CSV, IQ, or raw frame format Compression (gzip format) Capture file written directly to USB drive Frame Capture Setup...
Page 356 Wander TIE logging and real-time export to USB Built-in MTIE/TDEV Wander Analysis VeEX MTIE/TDEV Wander Analysis PC software Individual screens, fields and selections may vary among products or technologies, and depend on the options/licenses loaded or available for each test set. Nonetheless, the concepts and procedure flow are very similar.
Page 357 RXT-3900 e-Manual D07-00-111P Rev A00 The Recovered Clock Wander Measurements features can usually be found within the test options that the intended technology offers. In 1GE and 10GE test modes, the Wander Measurement function may be found under the Advanced Tools menu, provided that SyncE or 1588v2 slave modes have been enabled.
Page 358 PASS/FAIL assessment, without the need for a PC. The test set may allow the analysis to be performed while the test is still running for run-time verification. Longer test take a lot longer to be analyzed, so the VeEX Wander Analysis PC Software is still recommended for tests longer than 24 hours.
Page 359 RXT-3900 e-Manual D07-00-111P Rev A00 to position the cursor and read specific TIE values. The rubber cursor keys can also be used to move the cursor. MTIE & TDEV Pass/Fail Analysis MTIE Results 1. Standard MTIE & TDEV masks selection 2.
Page 360 RXT-3900 e-Manual D07-00-111P Rev A00 Go back to top Go back to TOC VeEX MTIE/TDEV Wander Analysis PC software • Provides further post-processing of clock stability data, such as MTIE and TDEV for long-term tests • Frequency offset calculation and removal for relative TIE analysis •...
Page 361 RXT-3900 e-Manual D07-00-111P Rev A00 MTIE & TDEV Analysis Report in PDF Click on the Report button to generate a copy of the measurement and analysis in PDF format.
Page 362 RXT-3900 e-Manual D07-00-111P Rev A00 Go back to top Go back to TOC TIE Monitor Graph The real time monitoring TIE graph shows current test results as the test is running. Based on current test measurements, users can decide to continue with long term testing or change configuration settings. The Y scale is auto-ranging and displays the last seven minutes of measurement results.
Page 363 RXT-3900 e-Manual D07-00-111P Rev A00 Go back to top Go back to TOC...
Page 364 RXT-3900 e-Manual D07-00-111P Rev A00 15.5 CPRI Layer 2 Monitor CPRI Layer 2 Monitor Main Menu CPRI bi-directional monitoring can be configured with dual port pass through monitoring or with optical splitters. It also offers the following features: Troubleshoot protocol interop with Control words display Link status and alarm display Hyperframe capture Go back to top Go back to TOC...
Page 365 RXT-3900 e-Manual D07-00-111P Rev A00 The Setup page has four tabs for setting up test parameters: Signal, Measurements, General, and SDT tabs. Go back to top Go back to TOC Configure the following: Signal Hierarchy: CPRI Speed Selection from 614.4Mbps to 10.137G. Check with SFP+ manufacturer specifications to make sure rates are supported.
Page 366 RXT-3900 e-Manual D07-00-111P Rev A00 Payload: CPRI Layer 2 configuration CPRI Emulation Type: CPRI Slave emulation is chosen by default CPRI Protocol: Version 1 supported #Z.0.1 Byte: Sync Control Word Z.0.1 set to D16.2 or D5.6 Channels: Single: PRBS test pattern monitored on one AxC All: PRBS test pattern monitored on all AxC Control and Management (C&M) channel configuration: Slow C&M Rate:...
Page 367 RXT-3900 e-Manual D07-00-111P Rev A00 Go back to top Go back to TOC Measurements Measurements Setup Configure a test to run for a fixed duration or a delayed start. Mode: Manual, Timed, and Auto selections are available. Manual: This is linked to the Start/Stop function. Timed: The test duration can be set by the user.
Page 368 RXT-3900 e-Manual D07-00-111P Rev A00 General Setup Audible Alarm: OFF / ON. A sound will be generated every time there is an alarm. This feature is not available on all test sets. Results on start: OFF / ON. Shows the results screen on pressing Start. Auto Save: OFF / ON.
Page 369 RXT-3900 e-Manual D07-00-111P Rev A00 Summary The Summary tab displays a summary of test results and parameters. At a glance, the user is able to see if there are any alarms, errors, or signal failure pertaining to the signal and its payload. The top summary refers to results for Port 1 and the bottom for Port 2.
Page 370 RXT-3900 e-Manual D07-00-111P Rev A00 information. Go back to top Go back to TOC Errors/Alarms (Page 2) - CPRI Page 2 lists CPRI Errors/Alarms associated with the signal under test. Some options may not be available depending on the platform and module. CPRI: LOS: Loss of Signal detection in seconds Code: 8b/10b code violation detected count and rate...
Page 371 RXT-3900 e-Manual D07-00-111P Rev A00 The Signal tab brings up the frequency and level result screen. Page 1 & 2 displays the level measurement. Loss of Signal (LOS) and the Saturation level for optical signals is shown graphically including the level measurement in dBm. Each page displays measurements for an individual port.
Page 372 RXT-3900 e-Manual D07-00-111P Rev A00 Signal - Optical Information (Page 5 & 6) Page 5 & 6 display the Optical module (SFP or XFP) information which includes Vendor name, Part number, and Optical Wavelength. Signal - Optical Information (Page 7 & 8) Page 7 &...
Page 373 RXT-3900 e-Manual D07-00-111P Rev A00 Histogram showing BERT alarms and errors events. Go back to top Go back to TOC Graph The Graph tab displays a log of the Errors recorded during the measurement interval. A dedicated page is available for each of the error types.
Page 374 RXT-3900 e-Manual D07-00-111P Rev A00 Go back to top Go back to TOC Event Log 1 & 2 Logs CPRI Alarms and Errors events along with corresponding count and duration for each event. Event Log 1 refers to Port 1 events, while Event Log 2 refers to Port 2 events.
Page 375 RXT-3900 e-Manual D07-00-111P Rev A00 15.5.3 Service Disruption Test (SDT) Results Refer to SDT Results in the CPRI Layer 1 Framed section for more information on test results. Go back to top Go back to TOC 15.5.4 Control Words 1 & 2 Display of Control words content in the 64 Subchannels.
Page 376 RXT-3900 e-Manual D07-00-111P Rev A00 Go back to top Go back to TOC Frame Capture When configured in L2 Monitoring mode, the unit captures P1 and P2 simultaneously. The following lists Frame capture options: Capture up to 5000 Hyperframes CSV or raw frame format Compression (gzip format) Capture file written directly to USB drive Frame Capture Setup...
Page 377 RXT-3900 e-Manual D07-00-111P Rev A00 Go back to top Go back to TOC...
Page 378 RXT-3900 e-Manual D07-00-111P Rev A00 16.0 Profiles Profiles can be created in any application that has a "Profiles" drop-down menu available. The PDH, SDH, OTN, Ethernet and Fiber Channel applications all have the ability to save profiles. Profiles can be viewed and loaded in the Profiles folder located in the Files folder structure. Accessing and Configuring Profiles To access the Profiles menu from the OTN/SDH/SONET Testing main menu, tap on the following icons: Advanced Mode >...
Page 379 RXT-3900 e-Manual D07-00-111P Rev A00 17.0 Common Functions Please refer to the RXT-1200 Platform manual for the following functions: IP Tools: Ping, Trace Route Net Wiz WiFi Wiz Advanced Tools Utilities Files R-Server Backlight VeExpress M.Upgrade Go back to TOC...
Page 380 Replace hardware which proves to be defective provided that the products that the customer elects to replace is returned to VeEX Inc. by the customer along with proof of purchase within thirty (30) days of the request by the customer, freight prepaid.
Page 381 RXT-3900 e-Manual D07-00-111P Rev A00 19.0 Product Specifications The product specifications are available for download in PDF format on the VeEX customer website. Please note that Adobe Reader version 9.0 or higher is needed to open and view the file.
Page 382 Use of this logo implies that the unit conforms to requirements of European Union and European Free Trade Association (EFTA). EN61010-1 For a copy of the CE Declaration of Conformity relating to VeEX products, please contact VeEX customer service. What is RoHS? RoHS is the acronym for Restriction of Hazardous Substances.
Page 383 RXT-3900 e-Manual D07-00-111P Rev A00 21.0 About VeEX VeEX Inc., the Verification EXperts, is an innovative designer and manufacturer of test and measurement solutions addressing numerous technologies. Global presence through a worldwide distribution channel provides uncompromised product support. Visit us online at www.veexinc.com...

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