Zte ZXMW NR8120A Maintenance Manual
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Zte ZXMW NR8120A Maintenance Manual

Zte ZXMW NR8120A Maintenance Manual

Digital microwave transmission system
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ZXMW NR8120A/8120D
Digital Microwave Transmission System
Maintenance Guide
Version: V2.04.02
ZTE CORPORATION
No. 55, Hi-tech Road South, ShenZhen, P.R.China
Postcode: 518057
Tel: +86-755-26771900
Fax: +86-755-26770801
URL: http://support.zte.com.cn
E-mail: 800@zte.com.cn

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Summary of Contents for Zte ZXMW NR8120A

  • Page 1 ZXMW NR8120A/8120D Digital Microwave Transmission System Maintenance Guide Version: V2.04.02 ZTE CORPORATION No. 55, Hi-tech Road South, ShenZhen, P.R.China Postcode: 518057 Tel: +86-755-26771900 Fax: +86-755-26770801 URL: http://support.zte.com.cn E-mail: 800@zte.com.cn...
  • Page 2 ZTE CORPORATION is prohibited. Additionally, the contents of this document are protected by contractual confidentiality obligations. All company, brand and product names are trade or service marks, or registered trade or service marks, of ZTE CORPORATION or of their respective owners.

  • Page 3: Table Of Contents

    2.2.4 Instantaneous Link Break................2-5 2.2.5 The MU Loses Lock ................. 2-5 2.2.6 Air Interface Performance Is Zero .............. 2-5 2.3 TDM Service Faults .................... 2-6 2.4 Ethernet Service Faults ..................2-6 2.5 Network Management..................2-7 SJ-20150804150350-006|2015-09-17 (R1.0) ZTE Proprietary and Confidential...
  • Page 4 3.1 Performing the Loopback Test ................3-1 3.2 Checking the Ethernet OAM Function ..............3-3 3.2.1 Checking CFM ..................3-5 3.2.2 Checking EFM ..................3-13 3.3 Performing the MSTP Single-Step Operation ............. 3-16 Chapter 4 Indicators................... 4-1 Glossary ......................I SJ-20150804150350-006|2015-09-17 (R1.0) ZTE Proprietary and Confidential...

  • Page 5: About This Manual

    Describes the common fault locating method including loopback Methods test, Ethernet OAM test, and MSTP single-step operation. Chapter 4, Indicators Describes the indicators of the ZXMW NR8120A/8120D system. Conventions This manual uses the following typographical conventions: Italics Variables in commands. It may also refer to other related manuals and documents.
  • Page 6 Caution: indicates a potentially hazardous situation. Failure to comply can result in moderate injury, equipment damage, or interruption of minor services. Note: provides additional information about a certain topic. SJ-20150804150350-006|2015-09-17 (R1.0) ZTE Proprietary and Confidential...

  • Page 7: Chapter 1 Routine Maintenance

    2. (Optional) If the running indicator of a board is lit red, troubleshoot the board fault immediately. For detailed information, refer to the "ZXMW NR8120AD Digital Microwave Transmission System Alarm and Notification Handling Reference". – End of Steps – SJ-20150804150350-006|2015-09-17 (R1.0) ZTE Proprietary and Confidential...

  • Page 8: Checking The Current 24-Hour Performance Data

    ZXMW NR8120A/8120D Maintenance Guide 1.1.2 Checking the Current 24-Hour Performance Data This procedure describes how to check the current 24-hour performance data, using the procedure of checking the current 24-hour Ethernet performance data as an example. Steps 1. Log in to the WEB LMT system, In the left navigation tree, select Performance > ETH >...

  • Page 9: Checking Alarms

    1. Log in to the WEB LMT system, In the left navigation tree, select Alarm > Current. The shelf diagram is displayed in the right pane. 2. Set Position and Alarm Level, and click the Query button. The current alarm information is displayed, see Figure 1-4. SJ-20150804150350-006|2015-09-17 (R1.0) ZTE Proprietary and Confidential...

  • Page 10: Checking Device Events

    ZXMW NR8120A/8120D Maintenance Guide Figure 1-4 Current Alarm Information Note: Users can export the alarm query result to an Excel file or a Word file for further analysis and processing. 3. If there is any critical alarm, locate, isolate, and resolve the fault as soon as possible.

  • Page 11: Checking The Status Of Indicators

    Steps 1. If possible, power off the equipment, detach the circuit boards and components from the equipment in accordance with the specified procedure, and then fully clean each part of the equipment. SJ-20150804150350-006|2015-09-17 (R1.0) ZTE Proprietary and Confidential...

  • Page 12: Maintaining The Equipment Room Environment

    ZXMW NR8120A/8120D Maintenance Guide 2. If it is not allowed to power off the equipment, clean the power-on equipment with one of the following methods whenever applicable: Spray-wash the equipment first, and then wash it with a water gun. This method is applicable when a lot of dust covers the equipment.

  • Page 13: Quarterly Maintenance

    Select Performance > History Performance Data Query. The Add History Performance Data Query window is displayed. c. Click the Counter Selection tab, set NE Type to ZXMW NR8120A/8120D, set MO Type to NR8120A/8120D ODU, and click OK. The ODU performance statistics data is displayed.

  • Page 14: Checking The Odu Installation

    ZXMW NR8120A/8120D Maintenance Guide Check Result Handling Suggestion The receive level fluctuates. If frequency interference exists, perform the frequency sweep test to get the interference frequency and adjust the frequency points of the microwave link. If the level attenuation is caused by bad weather like rain, Modify the polarization mode to be a lower one, or à...

  • Page 15: Checking The Combiner Installation

    This procedure describes how to check the antenna installation, to ensure that the antenna can operate properly and well cooperate with other devices. Steps 1. Verify that the installation position and direction of the antenna meet the engineering design requirement. SJ-20150804150350-006|2015-09-17 (R1.0) ZTE Proprietary and Confidential...

  • Page 16: Checking The If Cable

    ZXMW NR8120A/8120D Maintenance Guide 2. Verify that the antenna bracket is firmly and reliably fixed on the pole, meeting the wind resistance requirement. 3. Verify that the antenna is within the protection range of the lightning rod. Note: The protection angle of the antenna's lightning rod must be less than 45°. In areas with high mountains or frequent thunderstorm, the protection angle of the antenna's lightning rod must be less than 30°.
  • Page 17 For operation details, refer to the "ZXMW NR8120AD Digital Microwave Transmission System Hardware Installation Guide". – End of Steps – 1-11 SJ-20150804150350-006|2015-09-17 (R1.0) ZTE Proprietary and Confidential...
  • Page 18 ZXMW NR8120A/8120D Maintenance Guide This page intentionally left blank. 1-12 SJ-20150804150350-006|2015-09-17 (R1.0) ZTE Proprietary and Confidential...

  • Page 19: Chapter 2 Troubleshooting

    Troubleshoot problems below towers before troubleshooting problems above towers. Figure 2-1 displays the troubleshooting flow. Figure 2-1 Troubleshooting Flow Table of Contents Application Faults .......................2-2 Radio Link Faults .......................2-3 TDM Service Faults....................2-6 Ethernet Service Faults ....................2-6 Network Management ....................2-7 SJ-20150804150350-006|2015-09-17 (R1.0) ZTE Proprietary and Confidential...

  • Page 20: Application Faults

    ZXMW NR8120A/8120D Maintenance Guide 2.1 Application Faults 2.1.1 A PC Connected to the LMT Interface Cannot Ping Equipment Perform the following troubleshooting steps: 1. Check the IP configuration of the Personal Computer (PC). To access the equipment through the LMT interface, the IP address of the PC must be configured within the same network segment of the default LMT debug IP address.

  • Page 21: Radio Link Faults

    2. Verify that the antenna direction is aligned with the main lobe direction, see Figure 2-2. Figure 2-2 Antenna Adjustment Diagram If the antenna is not aligned with the main lobe direction, adjust the antenna direction with the main lobe direction. SJ-20150804150350-006|2015-09-17 (R1.0) ZTE Proprietary and Confidential...

  • Page 22: Error Codes Are Generated On The Radio Link

    ZXMW NR8120A/8120D Maintenance Guide If the antenna is aligned with the main lobe direction, go to the next step. 3. Verify that the two ends of the link have consistent antenna polarization, and the ODU and antenna have consistent polarization.

  • Page 23: Instantaneous Link Break

    3. Verify that the ODU is properly connected to the antenna. 4. Verify that the configuration is correct. For example, both directions of an antenna must be in the same LAG group or PLA group. SJ-20150804150350-006|2015-09-17 (R1.0) ZTE Proprietary and Confidential...

  • Page 24: Tdm Service Faults

    ZXMW NR8120A/8120D Maintenance Guide 2.3 TDM Service Faults E1 Services Are Disconnected Perform the following troubleshooting steps: 1. Verify that the radio link is operating properly. For operation details, refer to "2.2.3 Radio Link Is Disconnected". 2. Verify that the E1 link status indicator of the RTEA board is in normal status.

  • Page 25: Network Management

    2. Ping the EMS server from the NEs respectively. Verify that the IP configurations of the NEs are the same with the design. 3. Check the MAC addresses of the NEs and verify that the NEs are configured with different MAC address. SJ-20150804150350-006|2015-09-17 (R1.0) ZTE Proprietary and Confidential...
  • Page 26 ZXMW NR8120A/8120D Maintenance Guide This page intentionally left blank. SJ-20150804150350-006|2015-09-17 (R1.0) ZTE Proprietary and Confidential...
  • Page 27 1. Connect the device to an error bit tester. 2. Log in to the WEB LMT system, In the left navigation tree, select Maintenance > Radio Port. The radio link loopback setting pane is displayed on the right, see Figure 3-1. SJ-20150804150350-006|2015-09-17 (R1.0) ZTE Proprietary and Confidential...
  • Page 28 ZXMW NR8120A/8120D Maintenance Guide Figure 3-1 Radio Link Loopback Setting Pane 3. Select Loopback Enable for the corresponding loopback items such as MF Loopback and IF Loopback, enter the corresponding Loopback Time, click the Apply button, and verify that the Bit Error Rate (BER) is zero.

  • Page 29: Chapter 3 Fault Locating Methods

    Ethernet Operation, Administration and Maintenance (OAM) involves fault management and performance management. When a fault occurs in the network, OAM helps maintenance personnel rapidly locate the fault and find out the fault cause. Performance SJ-20150804150350-006|2015-09-17 (R1.0) ZTE Proprietary and Confidential...
  • Page 30 ZXMW NR8120A/8120D Maintenance Guide management of OAM helps maintenance personnel monitor real-time network operations, including frame loss rate, frame delay, and jitter. This section uses the procedure of checking link connectivity as an example to describe how to check the Ethernet OAM function. In this example, the equipment reports the Continuity Check Message (CCM) loss alarm.

  • Page 31: Checking Cfm

    Select an MA name from the configured MA list. LMEP ID Sets the local MEP ID configured for the port. Operation Type Sets the testing function type, including Single-ended LM, One-way DM, Two-way DM, Test Transmission, and Test Reception. SJ-20150804150350-006|2015-09-17 (R1.0) ZTE Proprietary and Confidential...
  • Page 32 ZXMW NR8120A/8120D Maintenance Guide Parameter Description Interval Sets the interval between sending functional packets. If Operator Type is set to Test Transmission or Test Reception, this parameter becomes unavailable. Transmit Type Sets the packet transmit type to be Unicast or Multicast.
  • Page 33 Select an MA name from the configured MA list. MPID Primary Key Sets the local MEP ID configured for the port. Link Trace Sets whether the function is enabled. Destination MAC Sets the MAC address of the remote end. SJ-20150804150350-006|2015-09-17 (R1.0) ZTE Proprietary and Confidential...
  • Page 34 ZXMW NR8120A/8120D Maintenance Guide Parameter Description Sets the TTL of an LT packet. TimeOut Time Sets the timeout value for the remote end to send the LBR packet. 7. In the left navigation tree, select ETH > OAM_CFM > Operation Result Info. The Operation Result Info pane is displayed on the right, including the functions of test, LM, unidirectional DM, bidirectional DM, loopback test, and link trace.
  • Page 35 Indicates the average value of the remote packet loss rates within all the Rate of Packet intervals of the test. Start Time Displays the starting time of the test. End Time Displays the ending time of the test. SJ-20150804150350-006|2015-09-17 (R1.0) ZTE Proprietary and Confidential...
  • Page 36 ZXMW NR8120A/8120D Maintenance Guide c. Select an MP record, and click the Two-way DM button. The query result is displayed, see Figure 3-9. Figure 3-9 CFM Function Result Pane - Two-way DM Button For a description of the query result, refer to the following table.
  • Page 37 LTR packet is received. Figure 3-11 CFM Function Result Pane - Linktrace Button For a description of the query result, refer to the following table. 3-11 SJ-20150804150350-006|2015-09-17 (R1.0) ZTE Proprietary and Confidential...
  • Page 38 ZXMW NR8120A/8120D Maintenance Guide Parameter Description Valid Result 1 indicates that the result is valid while 0 indicates that the result is invalid. An invalid result indicates that unknown errors occur during the calculation process, causing the result invalid. Normally, the displayed query result is valid.

  • Page 39: Checking Efm

    Sets the timeout threshold of waiting for the response of the opposite end when EFM is performing the loopback operation. Link Monitor Indicates the gobal switch of the link event monitoring function of EFM. Loopback Sets whether EFM supports the loopback function. 3-13 SJ-20150804150350-006|2015-09-17 (R1.0) ZTE Proprietary and Confidential...
  • Page 40 ZXMW NR8120A/8120D Maintenance Guide Parameter Description OUI Information Provides the unique identification information of EFM. Users can enter at most three English characters in the text box. Vendor Information Indicates the information customized by the vendor, and is an integer ranging from 0 to 255.
  • Page 41 9. Click the Result Query button. The system displays the information of Send Packet statistics and Receive Packet statistics, which helps users find out the link status, Figure 3-16. Figure 3-16 EFM Loopback Pane 3-15 SJ-20150804150350-006|2015-09-17 (R1.0) ZTE Proprietary and Confidential...

  • Page 42: Performing The Mstp Single-Step Operation

    ZXMW NR8120A/8120D Maintenance Guide Note: The more approximate Send Packet statistics and Receive Packet statistics are, the better the link performance is. 10. Select ETH > OAM_EFM > Protocol Info from the left navigation tree. The EFM Protocol Status Query pane is displayed on the right.

  • Page 43: Chapter 4 Indicators

    Flashing slowly: USB insertion is detected. operational status WiFi is being started. indicator Steady on: USB WiFi is operating properly. Off: USB insertion is not detected. Flashing fast: in USB site commissioning and self-detection. SJ-20150804150350-006|2015-09-17 (R1.0) ZTE Proprietary and Confidential...
  • Page 44 ZXMW NR8120A/8120D Maintenance Guide Name Color Description Status GbE1 Green GE interface status Steady on: The Ethernet connection is indicator normal. GbE2 Flashing fast: Data is being transferred. GbE3 Off: The link is disconnected. GbE4 RCMUD Board Indicators Name Color...
  • Page 45 Not lit: The board is not powered on or the self-test fails. Fan alarm indicator Not lit: There is no alarm. Flashing at 5 Hz: critical or major alarm Flashing at 1 Hz: minor alarm or warning SJ-20150804150350-006|2015-09-17 (R1.0) ZTE Proprietary and Confidential...
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  • Page 47: Glossary

    - Indoor Unit - intermediate Frequency - Loopback - Loopback Reply LMEP - Local Maintenance association End Point - Link Trace - Link Trace Reply - Maintenance Association - Media Access Control - Maintenance Domain SJ-20150804150350-006|2015-09-17 (R1.0) ZTE Proprietary and Confidential...
  • Page 48 ZXMW NR8120A/8120D Maintenance Guide - Maintenance Point MSTP - Multiple Spanning Tree Protocol - Network Element - Network Management System - Operation, Administration and Maintenance - Outdoor Unit OSPF - Open Shortest Path First - Personal Computer RCMUA - Radio Core Cross Modem Unit A...

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