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Cabletron Systems SmartSTACK STS16-20RM Installation And User Manual

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STS16-20RM/STS16-20FRM
Token Ring Switches
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Summary of Contents for Cabletron Systems SmartSTACK STS16-20RM

  • Page 1 SmartStack STS16-20RM/STS16-20FRM Token Ring Switches Installation User Guide...
  • Page 3 Notice Cabletron Systems reserves the right to make changes in specifications and other information contained in this document without prior notice. The reader should in all cases consult Cabletron Systems to determine whether any such changes have been made. The hardware, firmware, or software described in this manual is subject to change without notice.

  • Page 4: Fcc Notice

    FCC Notice This device complies with Part 15 of the FCC rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.

  • Page 5: Declaration Of Conformity

    Declaration of Conformity Application of Council Directive(s): 89/336/EEC European Representative Name: Mr. J. Solari European Representative Address: Cabletron Systems Limited Conformance to Directive(s)/Product Standards: EC Directive 89/336/EEC Equipment Type/Environment: Networking Equipment, for use We the undersigned, hereby declare, under our sole responsibility, that the equipment packaged with this notice conforms to the above directives.

  • Page 6: Table Of Contents

    Switch of Servers ..... . . 3 Switch of Hubs......3 Switch of Desktops .
  • Page 7 ClearSession Support ..... . 27 CrossLink Connections ..... . 28 Spanning Tree Protocol Support .
  • Page 8 Configuration Menu ......75 Switch Configuration Screen....76 Stack Configuration Screen .
  • Page 9 Statistics Menu ......154 Switch Statistics Screen ..... 155 Power Supply Information Screen .
  • Page 10 Trap Receivers Screen ....203 List of Supported Traps from a Switch... . 204 9.
  • Page 11 11. Getting in Touch with Technical Support Problem Report Form ..... . 220 Appendix A. Abbreviations Appendix B. Cable and Pin Information Connecting to the Out-of-Band Management Port .
  • Page 12 Figure 11. Example of Dynamic Source Route Recovery, Switch 1 Failed ..... . . 33 Figure 12. Typical LAN Segmentation ....48 Figure 13.
  • Page 13 List of Tables Table 1. Status LEDs and Their Meanings ....Table 2. Stack-link LEDs and Their Meanings ... . Table 3.
  • Page 14 Notice...

  • Page 15: Introduction

    20RM and/or the STS16-20FRM Token Ring Switch can be used to improve network performance. This chapter also includes a list of features and specifications for the switch. Note: References to SmartStack STS16-20RM are also applicable to SmartStack STS16-20FRM. The topics of this chapter are presented under the following titles: •...

  • Page 16: Switching Technology

    The switches deliver high-reliability and media flexibility. These features combine to allow the switches to be used as a switch of switches which provides media flexibility in an Token Ring configuration.

  • Page 17: Switch Of Servers

    The switch ties together all Token Ring devices lined to a local wiring center. In networks, where a significant portion of the traffic moves locally between client and server, the switch can be very effective.

  • Page 18: Switch Of Floors And Buildings

    Token Ring switching and the SmartStack product family can provide the best solution. The STS16-20RM and the STS16-20FRM provide enhanced throughput to local wiring closets that can be connected to a switch located in the data center. Many networks consist of users located in different buildings of a campus environment.

  • Page 19: Front Panel Details

    This port enables attachment of a terminal, either local or remote, through a modem connection. The terminal can be used to configure and monitor the switch. The MANAGEMENT port automatically detects the baud rate of the terminal to which it is attached. Introduction SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01...

  • Page 20: Token Ring Ports

    Any of the Token Ring ports can be configured as an analyzer port. An analyzer port is used to monitor any of the other ports in the same physical switch. The activity can then be traced by a Token-Ring network analyzer attached to the analyzer port.

  • Page 21: Smartstack Interface Modules

    SSIM-H2-02 Fast Ethernet UTPs Reset Button The switch has a recessed reset button labelled RST that is located on the front panel. Pressing the reset button resets the hardware and software and clears all tables and memory, including the address tables. Pressing the reset button does not clear the values stored in nonvolatile random access memory (NVRAM).

  • Page 22: Status And Activity Leds

    Status and Activity LEDs The switch features three status LEDs at the left on the front panel that show the current status of the switch. There are also three activity LEDs at the left that indicate the activity of the optional stacker link module. Moreover, each Token Ring port has two LEDs.

  • Page 23: Table 2. Stack-Link Leds And Their Meanings

    The Token Ring port is inserted into the ring. The Token Ring port is not inserted into the ring. The Token Ring port is disabled. Data is being transmitted to or received from the port. SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01 Meaning Meaning...

  • Page 24: Back Panel Details

    Table 4 lists the back panel connectors on the switch. Name AC connection Redundant power supply Table 4. Back Panel Switches and Connectors SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01 Description Standard AC power connection. Connector for the optional redundant power supply unit. Introduction...

  • Page 25: Features And Specifications

    • CrossLink high-speed inter-switch connection (up to 256 Mbps using eight ports) • Advanced filtering (MAC address / Protocol) • VLAN (Virtual LAN) support • Support for transmission priorities • Congestion control Introduction SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01...
  • Page 26 No special crossover cable required • Rack or surface mounting • Plug and Play for transparent forwarding: — Automatic learning of network configuration — Transparent to high-level protocol • Automatic sensing and configuration of ports SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01 Introduction...

  • Page 27: Specifications

    2 using the SmartStack STS-LM Link Module 4 x 4/16 Mbps RJ-45 Token Ring 4 x 4/16 Mbps Fiber Token Ring 1 x ATM155 Card (UTP and MMF) 2 x High-Speed Token Ring (UTP and Fiber) 10,000 5,500 SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01...

  • Page 28: Table 6. Performance Specifications

    AC current rating Thermal dissipation (without modules) MTBF Table 7. Specifications of Physical Characteristics SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01 Value 57,000 pps in each direction (measured with a frame size of 19 bytes) 200,000 pps in each direction. Full media...
  • Page 29 Evolution of the Interfaces Group of MIB-II (RFC1573) RMON MIB/TR extensions - selected groups only (RFC1757/1513) IEEE 802.5 MIB (RFC1749/1748) IEEE 802.5r DTR MIB IEEE 802.5r DTR MAC MIB STS16-20RM MIB VTP MIB SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01...
  • Page 30 Specification Network management Table 7. Specifications of Physical Characteristics SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01 Value SNMP Management Platform Console Telnet sessions SmartStack Manager for Windows 95 and NT Additional management applications available on Unix platforms: —Tivoli TME 10 NetView for AIX...

  • Page 31: Switch Overview

    Token Ring networks. They operate as a Media Access Control (MAC)-layer device that is protocol independent. This chapter describes how the switch operates as a single stand-alone unit. The switch contains the following main elements: •...

  • Page 32: Multiple Simultaneous Conversations

    For example, as shown in Figure 6, while host A is transmitting a byte to host B, the switch connects only the lines from A to B since there is no need to send packets to all other ports. At the same time, a second switching circuit can connect host C to host D.

  • Page 33: Low Latency

    At power up, the system address tables do not contain any information. Whenever a switch receives a packet with an unknown source or destination address, it learns the new source address and stores its location in coming port in the address table.

  • Page 34: Multiple Bridging Modes

    Each port on the switch belongs to a CRF, which is a logical grouping of ports within the switch. A CRF can consist of any number of ports within a switch or a switch stack. The ports within a CRF do not have to be adjacent.

  • Page 35: Source Route Switching (Srs)

    63 logical rings. There are two levels of relay functions supported by the switch. The first level is the CRF to which the ports are assigned. The second level is the BRF. This is the parent relay function to which CRFs are assigned.

  • Page 36: Source Route Transparent (Srt)

    The benefit of the SRT/SRB mode is that it allows part of the network to be run in SRT mode to accommodate applications that do not support source routing, while still supporting duplicate MAC addresses on a number of SRB ports (for example, for SNA gateway applications). SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01 Switch Overview...

  • Page 37: Filtering

    Multicast addresses to a subset of ports. This last filter applies to non-source-routing frames only. Congestion Control At regular intervals, the switch CPU inspects the queues on all output ports. If a queue size is above a certain threshold, the port is instructed to: •...

  • Page 38: Three Switching Modes

    This section describes the three switching modes available on the switch. Cut-Through In this mode the switch starts forwarding the packet to the output port as soon as the destination address or the source route of the incoming packet has been resolved.

  • Page 39: Token Ring Port Operation Modes

    This is also known as Token Passing (TKP) station mode. • Full-duplex concentrator port Connects to a single station or to another switch in full-duplex mode. This is also known as Transmit Immediate (TXI) port mode. • Full-duplex station emulation Connects to another Token Ring switch.

  • Page 40: Ri/Ro-Like Connection

    A loop-back function has been implemented on these ports so that if the port is disabled or the switch is powered off there will not be a break in the attached main ring. This means that attaching a cable from the RI port of a MAU port to one of the two switch ports in effect joins the primary and the backup ring in a MAU/CAU main ring system.

  • Page 41: Transmission Priority Queues

    Transmission Priority Queues To address the needs of delay-sensitive data, such as multimedia, the Token Ring ports of the switch have two transmit queues, a high-priority queue and a low- priority queue. The queue for a frame is determined by the value of the priority field in the frame control (FC) byte.

  • Page 42: Crosslink Connections

    A CrossLink is a collection of identical parallel links between two switches or between a switch and an end node, aggregated to appear as one single link of the aggregate capacity. The traffic distribution mechanism attempts to balance the load on the individual links.

  • Page 43: Spanning Tree Protocol Support

    Frames are not forwarded across VLANs and ring numbers must be unique within a VLAN. • A VLAN consists of a number of ports of a switch or stack of switches • No frames are forwarded between ports belonging to different VLANs •...

  • Page 44: Figure 8. A Switch Configured With Two Vlans

    Figure 8. A Switch Configured with Two VLANs SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01 Switch Overview...

  • Page 45: Dynamic Source Route Recovery

    When DSRR is enabled, an extra path is automatically created between the two rings for each switch, as shown in Figure 10. During normal operation, these extra paths do not forward any traffic. Switch Overview Bridge No.

  • Page 46: Figure 10. Example Of Dynamic Source Route Recovery, Normal State

    If one of the switches (Figure 10) or its link to any of the Token-Rings fail, (one of) the remaining active switch(es) will after a short interval activate its backup path to take over the traffic of the failed switch (see Figure 11). When the failing switch has been repaired/replaced, the traffic will automatically revert to it.

  • Page 47: Figure 11. Example Of Dynamic Source Route Recovery, Switch 1 Failed

    Note that since a separate link is required for forwarding traffic with a given Route Descriptor, one switch can only carry backup traffic for one failed switch at a time. This means that a total of 2 n switches is required to handle simultaneous failure of n switches.

  • Page 48: Management

    This section describes the management options for the switch. SNMP The switch can be managed via a SNMP manager. It supports ten Management Information Bases (MIBs). Six of the MIBs are standard MIBs, which are defined by RFCs and are included with most SNMP management applications. Four of the MIBs are proprietary and are provided on the disk that accompanies the switch.

  • Page 49: Smartstack Manager For Windows

    The switch does not support management by the IBM LAN Network Manager, but it will allow LAN Network Manager LLC frames to flow through the switch so that communication to existing LNM manageable hubs and source route bridges will be maintained.

  • Page 50: Rmon Support

    This causes increased traffic through the network. With RMON, you can have the switch monitor a particular statistic internally, and when the statistics reaches a threshold, the switch will send a trap to the client. This monitoring method reduces traffic between the SNMP client and the switch.

  • Page 51: Built-In Port Counters

    10. Token-Ring Table 9. Supported RMON Groups Built-in Port Counters The switch supports a wide range of port counters, which enables you to obtain a detailed overview of the port traffic. The counters give a comprehensive overview in the areas of: •...

  • Page 52: Stackable Architecture

    The SmartStack STS-5SU Stacker Unit can be inserted into the stacker port of a switch. It allows up to five switches from the STS16-20 series to be stacked together. One of the switches in the stack must contain the SmartStack STS-5SU. Each switch in the stack must be equipped with a SmartStack STS-LM Link Module and an appropriate stacker link cable.

  • Page 53: Optional Redundant Power Supply

    Optional Redundant Power Supply The switch has an input for a backup power supply. It is compatible with the SmartStack STS-RPC Redundant Power Center, which can supply backup power for up to six switches, when up to six SmartStack STS-PSU Redundant Power Supply Units are installed in the chassis.
  • Page 54 SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01 Switch Overview...

  • Page 55: Preparing For Installation

    Read the installation instructions before you connect the system to its power source. To turn off the switch, you must disconnect the power cord; there is no ON/OFF switch. Note that if the switch is connected to an external Redundant Power Supply Unit (RPSU), the power cord must be removed from both units.

  • Page 56: Preventing Electrostatic Discharge Damage

    Caution: For safety, periodically check the resistance value of the antistatic strap, which should be between 1 and 10 M . SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01 Preparing for Installation...

  • Page 57: Site Requirements

    Cooling and Airflow Two fans, which are located at the left side of the switch, cool the interior by drawing air through vents on the left side and forcing heated air out through holes in the right side.
  • Page 58 The STS16-20RM unit and the STS16-20FRM unit each weighs approximately 8.8 kg (19.4 lbs). Caution: To separate the switch from the power, pull the power cord completely out from the socket. The power socket must be easily accessible and located near the unit.

  • Page 59: Configuration Guidelines

    4,546 bytes. Additionally, if you are using ATM uplinks, all ATM uplinks in the switch and in the stack must support 18 KB frames for any switch in the stack to support MTU sizes greater than 4,472 bytes.

  • Page 60: Ieee 802.1D Spanning Tree

    If this is not done you may experience problems after the switch has been installed in the network.

  • Page 61: Ring Numbers

    Ring Numbers Forwarding frames between CRFs in SRB mode is only possible if the CRFs know their ring numbers. If you are running the switch in an environment without other bridges/switches, auto-configuration of ring numbers is not possible. In this case, you have to configure the ring numbers manually.

  • Page 62: Sample Applications For The Sts16-20Rm And The Sts16-20Frm

    All of the stations are attached to access units located in a single wiring closet. You can install an switch in the same wiring closet and divide the LAN into 4 segments of 20 stations each. One access-unit port from each segment will be connected to a port on the switch via a patch cable.

  • Page 63: Figure 13. A Simple Application Of The Switch

    Figure 14 on the next page illustrates a typical network without the STS16-20RM or the STS16-20FRM switch. This network is a three-level, hierarchical, campus network. Figure 15 and Figure 16 offer several alternatives for using the STS16-20RM or the STS16-20FRM switch. Preparing for Installation SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01...

  • Page 64: Figure 14. Typical Network Without The Smartstack Switches

    In Figure 15, the congested campus backbone and the sourcerouting bridges (SRBs) attached to it have been replaced by an STS16-20RM or an STS16-20FRM. Figure 15. Relieving the Overstressed Backbone SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01 Server Server Server...

  • Page 65: Figure 16. Replacing Srbs With Sts16-20Rm Or Sts16-20Frm

    MAUs and bridges without the need for further reconfiguration. This configuration greatly improves performance by allowing switching directly from ring to ring. The four servers, each with a full-duplex connection to the switch, have been grouped in CRF 5.

  • Page 66: Important Management Considerations

    If the port in the primary path fails, the port that has been blocked will change automatically to the forwarding state, keeping the network operational. Figure 17. Star-Wired Topology of Interconnected Switches SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01 Preparing for Installation...

  • Page 67: Installation

    Note: For information on front panel and back panel connectors, buttons, slots, and LEDs, please see “Front Panel Details” on page 5 and “Back Panel Details” on page 10 in Chapter 1. Installation SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01...

  • Page 68: Package Contents

    If you have received your equipment before your site is fully prepared, after inspection, you should keep all of the components in the original shipping containers and store them in a physically and environmentally safe place. SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01 Installation...

  • Page 69: Materials Needed For Installation

    5. Secure the card with the two thumbscrews attached to it. This is illustrated in the publication that was shipped with the SSIM. 6. It may be necessary to download new microcode to the switch in order to use a specific SSIM. Refer to the instructions that came with your SSIM package.

  • Page 70: Figure 18. Removing The Ssim Slot Cover

    Figure 18. Removing the SSIM Slot Cover SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01 Installation...

  • Page 71: Mounting The Chassis

    Mounting the Chassis The switch can be mounted in a standard 19-inch rack or cabinet, or can be mounted on any flat surface such as a tabletop. The installation area should be near a power source and should have enough room around the front and back panels for cabling and access to controls.

  • Page 72: Table-Mounting

    Figure 20. Mounting the Switch in a Rack or Cabinet Table-Mounting The switch operates at a low noise level, which makes it suitable for a large enough flat surface, such as a table. Four self-adhesive pads are supplied with the switch. The pads must be mounted in the four recesses on the bottom of the switch.

  • Page 73: Cabling

    If such routes cannot be avoided, use floor cable covers or similar material to secure and protect the cables. • Be sure that the cables connected to the switch are supported so that the cable connectors are not excessively strained. •...

  • Page 74: Connecting Devices To The Token Ring Ports Using Building Wiring

    Depending on the cable type you use, the device end of the cable may also have a 9-pin D-shell or 150 ohm Data Connector. 3. If the switch is rack-mounted, dress the switch end of the cables through a cable management bracket, if one is present on your rack.

  • Page 75: Checking The Installation

    Note: On STS16-20RM, do not connect these cables to the Ring-In or Ring-Out port on a media access unit (MAU) unless you use port 19 or 20 on the switch. 5. Connect the other end of the cable to a Token Ring port on the switch.

  • Page 76: Applying Power

    Applying Power The switch chassis does not have an on/off switch. Power is on when the unit is plugged into a power source. There are no user serviceable parts inside a switch. Any internal upgrades or service should be performed by Qualified Personnel only.
  • Page 77 LEDs for the switch. Note: If the switch fails to power up correctly or if it encounters any unrecoverable error, the ERR LED will be on or flashing on. If the ERR LED is on or flashes, see Chapter 10, “Troubleshooting”.
  • Page 78 SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01 Installation...

  • Page 79: Accessing Switch Management

    Network management applications (in-band management) are beyond the scope of this guide. However, note that to be able to manage the switch by the network management application via SNMP, you will have to configure a few settings first in the switch console.

  • Page 80: Connecting The Console

    Connecting the Console The two following subsections explain how to connect to the switch console. You can connect directly or via a modem. For detailed information on cabling and pins, see Chapter B, “Cable and Pin Information”. Connecting a Terminal Directly to the MANAGEMENT Port 1.

  • Page 81: Table 10. Console Configuration Settings

    Terminal width ANSI 7 or 8 bit commands Table 10. Console Configuration Settings Accessing Switch Management Value 2400, 4800, 9600, 19200, 38400, 57600 None None VT100 Full Off (input and output) Destructive SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01...

  • Page 82: Communication Problems

    Autobaud routine within the switch. To do this, press the reset button on the front of the switch and wait for the internal diagnostics to finish (the DIAG LED turns off). The reason for the reset is that in case the switch’s Autobaud routine is disabled, resetting it will set it to its...

  • Page 83: Diagnostic Screen

    - LAN ports detected: - RJ-45 Token Ring: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 - StkPort : 29 Accessing Switch Management SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01...
  • Page 84 Note: If you have forgotten the password, you can delete it by pressing the unlabeled system request button on the front panel of the switch for one second. Then release it and select Point 4. Clear the system password. This will clear both the Read-Only and the Read/Write password.

  • Page 85: Switch Configuration

    This chapter explains how to set up the STS16-20RM or the STS16-20FRM Token Ring switch and how to modify the configuration using a VT100 console attached to the switch directly or via a modem connection. The switch configuration can also be modified from a remote VT100 console via a telnet session.

  • Page 86: General Guidelines

    They can read everything (except the SNMP communities). • Read-write users: These users have full access to all configuration parameters. SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01 . If you need to specify additional information for that ENTER ENTER CTRL-B CTRL-L Console Configuration.

  • Page 87: Navigating Within The Menus

    Unless specified differently, all the screens and menus are accessed in the same way. The following section describes the items on the main menu. Switch Configuration and the main menu is presented. ENTER SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01 Password. ENTER...

  • Page 88: Main Menu

    The main menu contains the following items, that give access to console screens and submenus: Configuration... Displays the Configuration menu, which enables you to view and set the switch configuration parameters. A detailed explanation of the configuration submenus is given on page 75.

  • Page 89: Configuration Menu

    Configuration Menu Open this menu by selecting Configuration in the main menu. From the Configuration menu you can view and set the switch configuration parameters. This chapter describes all submenus and screens. Switch Configuration SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01...

  • Page 90: Switch Configuration Screen

    Pressing System Description Name and model of the switch, or, in the case of a stack, the generic stack name. In addition to this, the firmware release is displayed. Information in this field cannot be changed.
  • Page 91 This is ensured by assigning MAC address to BRFs from the Switch Base Address + 32 (0x20) and upwards. The switch is designed in such a way, that it operates with 63 active or preferred VLAN’s, implying that 63 MAC addresses need to be reserved for BRF.
  • Page 92 The MAC address of the default BRF (trnet-default) will always be the switch base address + 32. If the switch operates in a stack, only one of the switches will operate the bridge relay function. Hence the MAC address of the default BRF will be based on the address of the stackmaster.

  • Page 93: Stack Configuration Screen

    Number of switches currently participating in the stack. Information in this field cannot be changed. Local Box Number Number assigned to the currently selected switch. The local box is also the source of the information displayed on this screen. Information in this field cannot be changed.

  • Page 94: Module Information Screen

    Number of switches (in addition to this one) in the stack. Information in this field cannot be changed. Stack Time-out If a switch goes off line, the length of time (in seconds) during which the stack tries to reestablish communication with the switch. The default is 16 seconds. Stack State Whether the SmartStack Switch Stacker is operational (SmartStack STS-LM or SmartStack STS-5SU).
  • Page 95 Module Module number. The switch is listed as module 1. Expansion cards are listed as module 2 and module 3. The stack port is listed as module 4. Status Whether the module is up, down, failed, or the slot is empty.

  • Page 96: Vlan Configuration

    VLAN Configuration The Virtual LAN feature can be used to partition a switch or a stack of switches into several Virtual LANs, each containing its own set of ports (the terms Virtual LAN and domain are interchangeable). Packets are forwarded only between ports belonging to the same VLAN.

  • Page 97: Vlan Configuration Menu

    Displays the VLAN Configuration menu, which you use to define and administer BRFs and CRFs in the switch. VLAN Port Configuration... Displays the VLAN Port Configuration screen, which you use to view and configure port assignments to CRFs. Switch Configuration SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01 VLAN...

  • Page 98: Vlan Configuration Screen

    Note that if no ports are assigned to a BRF, it will not be assigned a MAC address. Moreover, it is not possible to assign IP addresses to it.. Return Returns to the previous menu. SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01 VLAN Configuration. VLAN Switch Configuration...
  • Page 99 Parameter Configuration screen. Delete Lets you delete a BRF or CRF. You cannot delete a BRF if there are CRFs assigned to it, or a CRF if there are ports assigned to it. Switch Configuration SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01...

  • Page 100: Vlan Parameter Configuration For Crf Screen

    Neither a BRF nor a CRF must exist with identical names. Parent VLAN BRF to which the CRF belongs. State Current state of the CRF. Possible values are Operational and Suspended. CRFs in SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01 VLAN Configuration Switch Configuration...
  • Page 101 1 through 13. The default is 7. TS Connection This parameter is only relevant if the switch or the stack is equipped with a SSIM- H2-02 Fast Ethernet - Translational Switch SmartStack Interface Module. It can be set to Primary (default) Secondary1, and Secondary2.

  • Page 102: Vlan Parameter Configuration For Brf Screen

    Current state of the BRF. Possible values are Operational and Suspended. BRFs in operational state are functional. BRFs in suspended state do not pass packets. The default is operational. SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01 VLAN Configuration Switch Configuration...
  • Page 103 VLAN ID of the BRF. Refer to the guide shipped with the relevant module. LAA VLAN MAC Address Used to configure a LAA MAC address used for in-band management of the switch. Note! The switch must be rebooted before this configuration takes effect. Switch Configuration SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01...

  • Page 104: Vlan Port Configuration Screen

    For ATM ports. • For translational switching ports. CRF to which the port is currently assigned. Parent BRF of the CRF to which the port is currently assigned. SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01 VLAN Port Configuration. VLAN Switch Configuration...

  • Page 105: Ip Configuration Screen

    IP assignment. Interface MAC Address Displays the MAC address assigned to this BRF. IP Address Used to configure the IP address of the switch in the selected VLAN (BRF). To change it, highlight the field and press Default: 192.0.2.1 Default Gateway Used to configure the default gateway.
  • Page 106 BootP. • BootP Always—In this state, the switch will at boot time clear the IP address assigned to this VLAN and send out BootP requests at regular intervals until it receives a BootP answer. Then normal IP communication will resume.

  • Page 107: Bootp Requests And Parameters

    (or via Telnet from another VLAN) during that time, the switch may cease using BootP if the parameters are set (on menu exit) in such a way that BootP would no longer be necessary - for instance, if the IP state is switched from BootP Always to IP-Disabled or if an IP address different from 0.0.0.0 or 192.0.2.1 is specified in any IP state.

  • Page 108: Snmp Configuration Menu

    STP reconfigures this tree to reestablish the links. To prevent loops, STP selects just one switch port as the designated path to the root, assigning it the Forwarding, or active state. It assigns all other ports the blocking, or standby, state.

  • Page 109: Ieee 802.1D Spanning Tree Protocol (Stp)

    If more ports have the same priority value assigned, the lowest port number will be selected. Note! All bridge relay functions in the switch use the same bridge identifier. As a consequence, you must not divide one switch into two or more VLANs by connecting them together and using the spanning tree protocol.

  • Page 110: Spanning Tree For Brf Screen

    IBM Source Route Spanning Tree Protocol and block or forward Spanning Tree Explorer frames. Other frames are forwarded by the bridge relay function. SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01 Spanning Tree. A list containing available BRF Switch Configuration...
  • Page 111 Enter a priority value for this spanning tree entity. The bridge with the lowest priority value in an STP (domain) becomes the root. Note! All BRFs in a switch use the same MAC, which means that it is not possible for more than one BRF to be in the same spanning tree domain.
  • Page 112 Enter the maximum message age advertised when this BRF is root. The minimum value may not be less than the higher of 6 or (2 x (Switch Hello Time + 1)). The maximum may not be more than the lower of 40 or (2 x (Switch Forward Delay –...

  • Page 113: Spanning Tree For Crf Screen

    If set to forwarding or blocking, the internal port will assume these states regardless of the spanning tree state of the parent BRF. Switch Configuration Spanning Tree. A list containing available BRF SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01...
  • Page 114 CRF as Priority.MAC address (the MAC address is the base MAC address of the switch + an internal number for the CRF). The spanning tree entity with the lowest bridge id in a spanning tree becomes the root.
  • Page 115 The maximum cannot be more than the lower of 40 or ((Switch Forward Delay x 2) – 1). The range limits that appear when you select this parameter are calculated using the values currently selected for Switch Hello Time and Switch Forward Delay.

  • Page 116: Port Spanning Tree Parameters Screen

    Path Cost Cost associated with the port. The spanning tree protocol uses port path costs to SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01 Spanning Tree. A list Switch Configuration...

  • Page 117: Current Spanning Tree Information Screen

    A summary of STP information for each port is available from the Current Spanning Tree Information screen. See Chapter 7, “Monitoring the Network from the Console Statistics Menu” on page 183 for more information. Switch Configuration SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01...

  • Page 118: Port Configuration Screen

    2. You will be prompted for a port number. When you have entered the port number, the Port Configuration screen for that port will be displayed. For the base switch ports, the screen will look as in the following example screen. For the uplink ports, refer to the uplink guide.
  • Page 119 Determines whether the port is enabled for Early Token Release (ETR). Possible values are Yes and No. The default is Yes. If Early Token Release is set to Yes and the media speed is 4 Mbps, the switch will force Early Token Release to No. Switch Configuration...
  • Page 120 This field is only valid when Forwarding Mode is set to auto. It specifies a sampling period in minutes. The sampling period is used when counting errors to determine a port’s forwarding mode. Possible values are 1–60 minutes. The default value is 10. SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01 Switch Configuration...
  • Page 121 Media Speed The Token Ring media speed. Possibilities are 4 or 16 Mbps or Auto. When a switch port configured with Auto discovers a connection to shared media, it will open and insert into the ring. If the open returns with an indication, that the port is the first station to enter the ring, it will close.
  • Page 122 Note: If you change any configuration parameters of a connected port, the port will close and reopen and you will lose all address information and statistics for that port. SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01 Switch Configuration...

  • Page 123: Switched Port Analyzer Menu

    CrossLink. See Chapter 7, “Monitoring the Network from the Console Statistics Menu”. • Address filtering. Address filters are automatically added to every port in a CrossLink. Switch Configuration SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01...
  • Page 124 Link failure. If one link in a CrossLink fails, a trap is sent, and the CrossLink connection continues with the rest of the links. If the link that is going down is the primary port, a new primary port will be selected instead. SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01 Switch Configuration...

  • Page 125: Crosslink Menu

    CrossLink Menu To open this menu from the main menu, select Configuration CrossLink. Use the CrossLink menu to access the CrossLink Configuration and Information screens. Switch Configuration SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01...

  • Page 126: Crosslink Configuration Screen

    Asks whether you want to remove the entry; then deletes the selected CrossLink. Change Entry Prompts you to reenter the port numbers in the selected CrossLink, from lowest to highest, separated by spaces. SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01 CrossLink Switch Configuration...

  • Page 127: Setting Up A Crosslink

    6. Set the Address Aging Time to the same value for all of the STS16-20RM series devices. 7. If you disconnected the ports in the CrossLink, reconnect them. If you disabled them using the Port Configuration menu, use the menu to re-enable them. Switch Configuration SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01...

  • Page 128: Current Crosslink Information Screen

    The number of the CrossLink referring to the information displayed on the present screen. State Whether the specified CrossLink is active or not. Ports What ports are in that CrossLink. SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01 CrossLink Switch Configuration...

  • Page 129: Address Filtering

    Filters are port specific and applied to a switch’s incoming traffic only. • Up to 250 “filters” can be created for each switch (the filters must be applied to specific ports at a specified switch). A “filter” is a combination of a MAC address and the “type”...

  • Page 130: Filters And Port Security Menu

    Displays the Configure Port Security mode screen, where you can establish address security at specific ports. View Port Filters... Displays the View Port Filters screen, where you can view port filters for a specific port. SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01 Filters & Port Switch Configuration...

  • Page 131: Configure Filters Screen

    Block any packet with source address—Block Src — That is, any packet from that specific address is blocked from entering the specified port(s). • Block any packet with destination address—Block Dest Switch Configuration SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01 Filters & Port...
  • Page 132 • Allow any packet with destination address—Allow Dest — If a packet is sent to a specified address, it is allowed to enter the switch through the specified port(s). This feature is used in conjunction with port security. •...

  • Page 133: Configure Port Security Mode Screen

    Configure Port Security Mode Screen This function disables address learning of source and/or destination addresses at specified ports on a switch. Port security totally blocks (secures) these ports. Port security mode is used in conjunction with port filtering. Configure a port security mode on a port and then use “allow”...

  • Page 134: View Port Filters Screen

    Mode menu: • This address is blocked • This address is allowed to talk to ports (as specified) • This address cannot be reached from this port SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01 Filters & Port Security. Switch Configuration...

  • Page 135: Protocol Filters Menu

    Ethertype of the SNAP header. The mapping from DSAP or Ethertype to protocol class is common for all switch ports in a stack. The Protocol Filters menu provides access to the Protocol Class Assignment screen and the Port Filtering Attributes screen: Switch Configuration SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01...

  • Page 136: Protocol Class Assignment Screen

    List of the DSAPs that you want to filter. You can specify up to 16 DSAPs (in their hexadecimal format) separated by spaces. SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01 Filters & Port Security. Then . You will then be...

  • Page 137: Port Filtering Attributes Screen

    None— Allow all frames in this protocol class (default value). The SRT column may have the following values: • Yes— Allow transparent bridging for frames in this protocol class (default value). Switch Configuration Filters & Port Security. Then SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01...
  • Page 138 CRFs for this protocol class. Ethertype Information column showing the Ethertype defined for this class. DSAPs Informational column showing the DSAPs currently in this class. SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01 Switch Configuration...

  • Page 139: Address Aging

    — sequentially aged from the top of the Address Aging table to the bottom of the table • Random local addresses • Sequential local addresses More information on address aging and the address aging screens is presented in the following sections. Switch Configuration SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01...

  • Page 140: Address Aging Menu

    The screens opened from this menu are described in the following sections. Port Address Table Aging Screen To open this menu from the main menu, select Configuration Then select Port Address Table Aging... SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01 Address Aging. Address Aging. Switch Configuration...
  • Page 141 If the table fills again, the aging process continues to cycle in the same manner. The default value is 90%. Switch Configuration SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01...

  • Page 142: Master Address Table Aging Screen

    9999 minutes. A value of 0 will disable the removal of addresses based on age. Demand Aging Level This parameter works in the same way as port demand aging level, only using the system address table. The default value is 90%. SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01 Address Aging. Switch Configuration...

  • Page 143: Password Menu

    The system prompts you to enter the present password before it allows you to change or delete the password. If you are establishing a new password, press at the Set Password prompt. Switch Configuration SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01 Password. ENTER...
  • Page 144 Note: If you have forgotten the password, you can delete it by depressing the unlabeled system request button on the front panel of the switch for one second, releasing it, then selecting Point 4. Clear the system password. This will clear both the Read-Only and the Read/Write password.

  • Page 145: Console/Telnet Sessions

    If the value is set to zero, the console will never time out. Default is 5 minutes. Note: You cannot select Serial Link Configuration... if you are accessing the configuration program via Telnet. Switch Configuration ENTER SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01 Console...

  • Page 146: Serial Link Configuration Screen

    Serial Link Configuration Screen Use the Serial Link Configuration screen to configure a switch when using a modem to create a console session. To open this screen from the main menu, select Configuration Configuration. Then select Serial Link Configuration. Hardware Flow Control Enables or disables RTS/CTS handshaking.

  • Page 147: Creating A Console Session Using A Modem

    Creating a Console Session Using a Modem Use the Serial Link Configuration menu to configure the switch in order to communicate with a console via a modem. Set your modem according to the following table.

  • Page 148: Telnet Configuration Screen

    Yes or No, and then press Terminate All Active Telnet Sessions If you highlight this selection and press SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01 , and enter the number. Default is 5. ENTER...

  • Page 149: Telnet Sessions Screen

    Numerical order of entries. The box number ID of the switch in a stack. Remote Lists the IP address and the port number of the Remote Telnet session. Switch Configuration Console Configuration. Then SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01...

  • Page 150: Starting The Telnet Session

    If any changes are made in the STP configuration. • The Telnet session also ends if a user makes changes in any of the following IP parameters: — IP address — Default gateway SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01 or any other means available CTRL-B Switch Configuration...
  • Page 151 Information Session screen or Virtual LAN IP Configuration screen, and save the changes using the Exit command from the screen, you will lose the connection to your Telnet session, even if the IP parameters you change are in another VLAN. Switch Configuration SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01...

  • Page 152: Syslog Daemon Screen

    Any message that is entered into the message log of the switch is also sent to up to 20 syslog receivers using IP UDP communication. There are two types of messages in the switch, Warnings and Info messages.
  • Page 153 Change Entry Modifies an existing entry. Zoom Displays more information. Switch Configuration SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01...

  • Page 154: Dsrr Configuration

    Token-Rings) to handle link or switch failures without session loss. During normal operation, each switch forwards frames containing a Specific Route Descriptor. If a switch or its link to the legacy or emulated Token-Ring fails, another switch will after, typically, less than 3 seconds start forwarding frames containing the Route Descriptor associated with the failing switch.

  • Page 155: Figure 27. Primary And Traced Dsrr Port

    Primary port Figure 27. Primary and Traced DSRR Port Switch Configuration Bridge No. B1 Backup BRF Inactive Backup for primary port Backup for traced port SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01 Traced port...

  • Page 156: Dsrr Group Configuration Screen

    Group ID and with primary ports connected to the same ring will provide backup for each other. Enabled This column shows if the switch participates actively in the group. SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01 DSRR Group Switch Configuration...

  • Page 157: Dsrr Configuration Screen

    Select View or Change to view or edit a group. You will be prompted for the Index (Ix) of the group. The DSRR Configuration screen will appear. Select Add to create a new group. You will be prompted for Box (if the switch is stacked), Port, and Group. The DSRR Configuration screen will appear.
  • Page 158 Group Priority Whenever more than one switch is able to take over from a failed switch, the one with the highest priority will be chosen. Possible values are 0–255, the default is 100. Hello Time Interval between hello packets sent by DSRR for this group. Possible values are 100–600,000 milliseconds, the default is 500.
  • Page 159 This is the ATM address that identifies the Lan Emulation Client implementing the Virtual ATM Traced Port (when applicable). You cannot change the value of this parameter. Return Saves the changes made on the screen and returns to the previous menu. Switch Configuration SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01...

  • Page 160: Download/Upload Menu

    Download/Upload Menu As enhancements are made to the switch, you may need to update the software that is contained in the switch. Or you may wish to save the configuration, that is, upload the configuration files. The files may be needed if the switch is replaced.

  • Page 161: Serial Link Download Screen

    To open the Download/Upload menu, select Download/Upload in the main menu. Serial Link Download Screen Open this screen from the main menu by selecting Download/Upload Serial Link Download. This screen is for downloading via the Out-of-Band management port. Switch Configuration SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01...

  • Page 162: Tftp

    During the download, the DIAG LED on the switch will be blinking. 9. When the download is complete, you will be prompted to reset the switch. Press to confirm the reset. The procedure is now complete. If the download was interrupted or the image was invalid, the switch will discover this during startup, and a new serial download must be performed prior to normal operation.

  • Page 163: Tftp Download/Upload Screen

    Main Image Download...,, Configuration Files Download..., Configuration Files Upload... Select the required function and input the path and filename of the file the switch attempts to download or upload, as it is to be received and interpreted by the TFTP server.
  • Page 164 (block 0 if no reply has been received) until the last packet arrives. The switch does not attempt to load any of the image into flash memory until it receives the final packet. Therefore, if interrupted or cancelled for any reason before the last packet, the previous system image remains intact in flash memory.

  • Page 165: Reset Screen

    To open this screen, select Reset... in the main menu. This screen displays the reset options available with the switch. Number of Resets Since Diagnostics Number of times the switch has been reset since the switch was powered on or ran power-on diagnostics. This is an informational heading; the data cannot be changed.
  • Page 166 This is a selectable option that determines whether diagnostics are, or are not, initiated during a switch power-on sequence. To change the selection, highlight the item and press ENTER Default: Enabled SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01 ; then select Enabled or Disabled, and press ENTER Switch Configuration...

  • Page 167: Monitoring The Network From The Console Statistics Menu

    For information on how to use the console interface, see “General Guidelines” on page 72 and “Navigating within the Menus” on page 73 in Chapter 6, “Switch Configuration”. Note: The switch allows LAN Network Manager LLC frames to flow through the switch.

  • Page 168: Statistics Menu

    “General Guidelines” on page 72 and “Navigating within the Menus” on page 73 in Chapter 6, “Switch Configuration” SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01 Monitoring the Network from the Console Statistics Menu...

  • Page 169: Switch Statistics Screen

    Note: References to “frames” in this menu refer to the frames that are handled by the CPU within the switch, for example SNMP requests. The Port Statistics screen (described in a later section) refers to frames handled by the ports on the switch. System Up Time Time passed since the last reset or power cycle.
  • Page 170 Address Table Full Number of times the hash table reached capacity. Used for technical system evaluation and troubleshooting. Reset Resets the switch statistics on this screen. SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01 Monitoring the Network from the Console Statistics Menu...

  • Page 171: Power Supply Information Screen

    To open this screen from the main menu, select Statistics Information. This screen displays information about any installed internal or external power supplies. Monitoring the Network from the Console Statistics Menu SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01 Power Supply...

  • Page 172: Port Status Screen

    Indicates if the port is currently inserted into the ring. Possible values are Yes and The Token Ring media speed. Possible values are 4 and 16. SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01 Port Status. Monitoring the Network from the Console Statistics Menu...
  • Page 173 The forwarding mode that will be used for transmit. Possible values are: • Cut-Thru—cut-through • Store-Fwd—store-and-forward For ports operating at a speed of 4 Mbps, the only possible mode is Store-Fwd. Monitoring the Network from the Console Statistics Menu SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01...

  • Page 174: Port Statistics Menu

    To enter the menu, you must first enter a port number. The screens you can access from this menu are described on the following pages. SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01 Port Statistics. Monitoring the Network from the Console Statistics Menu...

  • Page 175: General Statistics Screen

    STE Frames Forwarded Number of Spanning Tree Explorer frames forwarded by the port. ARE Frames Forwarded Number of All Route Explorer frames forwarded by the port. Monitoring the Network from the Console Statistics Menu SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01...
  • Page 176 Largest Number of Stations The maximum value of the number of local stations on this port at any time since reset of statistics. SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01 Monitoring the Network from the Console Statistics Menu...
  • Page 177 Explorer Overflow Indicates the number of times that an explorer frame has been dropped because of explorer rate throttling. Monitoring the Network from the Console Statistics Menu SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01...
  • Page 178 That is, the ring number of the port must be the last, if it is an explorer frame. Note that the switch performs a ring number test when the topology of the network changes. At that time the port might be disabled.

  • Page 179: 802.5 Statistics Screen

    Standby Monitor Present (SMP) frame in which both the address recognized (A) bit and the frame copied (C) bit are set to 0, indicating that no station has recognized Monitoring the Network from the Console Statistics Menu Port Statistics. SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01...
  • Page 180 It denotes the number of times this port is either transmitting or receiving beacon MAC frames. Signal Loss The number of times this port has detected the loss of signal condition from the ring. SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01 Monitoring the Network from the Console Statistics Menu...
  • Page 181 The number of times the port has detected that the frequency of the incoming signal differs from the expected frequency by more than that specified by the IEEE 802.5 standard. Monitoring the Network from the Console Statistics Menu SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01...

  • Page 182: 802.5 State Information Screen

    Opened, Closed, Opening, Closing. Ring Open Status This field indicates the success, or the reason for failure, of the station’s most recent SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01 Port Statistics. Monitoring the Network from the Console Statistics Menu...
  • Page 183 The bit mask of all Token Ring functional addresses for which this port will accept frames. Uptime When Beacon The time the switch had been running when the last beacon was sent on this port. Monitoring the Network from the Console Statistics Menu SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01...

  • Page 184: 802.5 Dtr Mac Information Menu

    2. Enter a port number. 3. Select 802.5 DTR MACInformation... The 802.5 DTR MAC Information menu provides access to the appropriate DTR information screen. SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01 Port Statistics. Monitoring the Network from the Console Statistics Menu...

  • Page 185: Txi Information Screen

    TSER as set by the Error Timer Value subvector X'05' from the Change Parameters or the Initialize Station MAC frame. This object indicates the value in .01 second increments. Monitoring the Network from the Console Statistics Menu SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01...
  • Page 186 Beacon Received, Remove, Internal Error, Station/CPort Err, Wire Fault, Claim Received, Purge Received, Standby Received, Invalid SA, Act Mon Recvd, Phantom Loss, and Dup Addr Det. SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01 Monitoring the Network from the Console Statistics Menu...

  • Page 187: Station-Cport Information Screen

    Individual Address Count subvector X'21'. This field will always display the value 1. Station Phantom Drive Support This field displays the MAC’s support of Phantom Drive and Wire Fault detection. Monitoring the Network from the Console Statistics Menu SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01...
  • Page 188 PPV(AP_MASK). Possible values for this field are TKP, TXI and TKP+TXI. Common Policy Flags This field displays the station policy flags as a hexadecimal value of the form 0x####. SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01 Monitoring the Network from the Console Statistics Menu...

  • Page 189: Address Tables Menu

    To open this menu from the main menu, select Statistics Use this menu to select which address table statistics you want to view. Monitoring the Network from the Console Statistics Menu SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01 Address Tables.

  • Page 190: Master Address Table Screen

    To open this menu from the main menu, select Statistics Master Address Table. This screen contains MAC addresses of all the ports known to the switch. The table can contain up to 10,000 entries memory. See a detailed description of MAC addresses on page 77.
  • Page 191 TS—The address is known at the specified Translational Switch. Port—In this case “nn” will appear as <box number>/<port number>. The address is known at a port of another switch in the stack. If the address has occurred as a destination address in incoming frames at other ports, it will be present in these ports too.
  • Page 192 Prompts you to enter the MAC address of a node and the ports whose address tables you want to search, then displays the entry on the first line. SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01 Monitoring the Network from the Console Statistics Menu...

  • Page 193: Master Route Descriptor Table Screen

    To open this menu from the main menu, select Statistics Master Route Descriptor Table. This table lists the learned route descriptors in the switch master table. These descriptors are contained within the 10,000 entries allowed for the master address table.

  • Page 194: Vlan Address Table Screen

    Unknown: — The route descriptor has occurred as next hop in the Route Information Field of incoming frames at one or more ports. The switch has however not yet learned the location of the route descriptor (bridge) because the target station has not sent any response frames.

  • Page 195: Vlan Route Descriptor Table Screen

    3. Select a CRF, when prompted. The VLAN Route Descriptor Table appears. For a description of the fields and their meaning, see the section “Master Route Descriptor Table Screen” on page 179. Monitoring the Network from the Console Statistics Menu SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01...

  • Page 196: Locate Mac Address Screen

    To open this menu, do the following: 1. From the main menu, select Statistics 2. Select Locate MAC Address. Enter a MAC address. The switch software will then try to locate the box and port that have seen it as a source address.

  • Page 197: Current Spanning Tree Information Screen

    Root ID Priority and MAC address of the root bridge. Root CRF The VLAN ID of the CRF that is closest to the root. This switch communicates with the root through this CRF. Hello Time Time (in seconds) that the root waits between sending configuration messages. This time is advertised by the root and used by all devices and switches in the active topology of the spanning tree network.
  • Page 198 Dsg SwId/BrId (Designated Switch Id/Bridge Id) Priority and ID of the device through which this port has determined it must SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01 A more effective way to the root bridge exists. Removing old address entries.
  • Page 199 Dsg PId (Designated Port Id) Port on the designated bridge through which this switch will communicate with the root of the spanning tree. This information is useful if the switch is the designated bridge on one or more network segments.

  • Page 200: Current Spanning Tree Information For A Crf Screen

    Priority and MAC address of the root bridge. Root Port Number of the port on this switch that is closest to the root. This switch communicates with the root through this port. This field might show Internal if the root port is between the CRF and the BRF.
  • Page 201 A unique bridge identifier of the bridge that is assumed to be the device through which this port has determined it must communicate with the root of the spanning tree. Monitoring the Network from the Console Statistics Menu SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01...
  • Page 202 Dsg PId (Designated Port Identifier) Port on the designated bridge through which this switch will communicate with the root of the spanning tree. This information is useful if the switch is the designated bridge on one or more network segments.

  • Page 203: Vlan Statistics

    Largest number of MAC addresses in the master address table—since the last reset or power cycle—that are recognized as belonging to this CRF. Monitoring the Network from the Console Statistics Menu VLAN Statistics. SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01...

  • Page 204: Vlan Statistics Screen For Brf

    VLAN. Display Members... Selecting this item will open a new screen that lists all CRFs that are members of the BRF. SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01 VLAN Statistics. Monitoring the Network from the Console Statistics Menu...

  • Page 205: Dsrr Status Screens

    Select View Neighbor or View Backup to view status tables for a group. You will be prompted for the Index (Ix) value of the DSRR group. The table screen will then appear. Monitoring the Network from the Console Statistics Menu SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01 DSRR Status:...

  • Page 206: Dsrr Neighbor Table Screen

    Then select View Neighbor. You will be prompted for the Index (Ix) value of the group, then the screen will appear. This screen contains a one-page entry for each switch currently participating in the Redundancy Group, including the one on the console of which the values are displayed.

  • Page 207: Dsrr Acting As Backup Table Screen

    Then select View Backup. You will be prompted for the Index (Ix) value of the group, then the screen will appear. This screen contains an entry for each switch for which the local switch is presently acting as active backup.

  • Page 208: Diagnostic Test Results Screen

    If this menu is reporting errors and you can not find a cause, contact your local place of purchase. SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01 Diagnostic Test Monitoring the Network from the Console Statistics Menu...

  • Page 209: Message Log Information Screen

    Type Message type. Possible values are: • W—Warning • I—Informational Message Content The full text of the message. More Shows the next screen. Monitoring the Network from the Console Statistics Menu SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01 Message Log...
  • Page 210 Back Shows the previous screen (if any). Start/End Move to the first or last page. Clear Clear all messages. SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01 Monitoring the Network from the Console Statistics Menu...

  • Page 211: Display Summary Screen

    Pressing , you cancel and return to previous menu. Monitoring the Network from the Console Statistics Menu key, you will start a screen report of all entered parameters, SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01 Display Summary.
  • Page 212 SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01 Monitoring the Network from the Console Statistics Menu...

  • Page 213: Monitoring The Network With Snmp

    SNMP configuration SNMP Setup Follow these steps to use in-band management: 1. Attach the switch to the console and start a console session as described in Chapter 5, “Accessing Switch Management”. 2. Make the necessary configurations in the IP Configuration screen.

  • Page 214: Snmp Configuration

    The default setting is No. The following groups are supported: • Token-Ring Statistics (MAC and Promiscuous) • History • Event • Alarm See detailed description of RMON Support on page 36. SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01 SNMP Monitoring the Network with SNMP...

  • Page 215: Community Strings Screen

    A community is defined as a relationship between an SNMP agent and one or more SNMP managers. Up to five different communities of 1—16 characters each can be stored in the switch. Entries in the table are saved across resets and power cycles. Trap Receivers...
  • Page 216 SNMP information. Add Entry Adds community string. Delete Entry Deletes community string. Change Entry Modifies community string and/or access mode. Clear Table Deletes all community strings. SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01 Monitoring the Network with SNMP...

  • Page 217: Trap Receivers Screen

    SNMP Configuration Trap Receivers. Trap receiver tables tell the switch where to send traps. The table contains the IP address associated with an SNMP trap receiver. The Trap receiver table contains a maximum of 20 entries. It is redisplayed each time the table changes.

  • Page 218: List Of Supported Traps From A Switch

    The Trap-PDU of type linkUp contains as the first element of its variable-bindings, the name and value of the ifIndex instance for the affected interface. The authenticationFailure Trap SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01 Monitoring the Network with SNMP...
  • Page 219 This trap is generated when there is a change in the stack configuration, that is, when either a new switch is added to the stack or a switch leaves a stack. STS16NumSwitches indicates the current number of switches which are part of the stack.
  • Page 220 Learning state to the Forwarding state, or from the Forwarding state to the Blocking state. The trap is not sent if a newRoot trap is sent for the same transition. Traps for CrossLinks STS16CrossLinkFailed SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01 Monitoring the Network with SNMP...
  • Page 221 This trap is sent when one of the links in an CrossLink fail. The variable STS16CLPorts contains the ports which are operational in the CrossLink. Monitoring the Network with SNMP SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01...
  • Page 222 SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01 Monitoring the Network with SNMP...

  • Page 223: Monitoring Port Traffic

    That is, if the monitored port is in HDX mode, the analyzer port Monitoring Port Traffic SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01...
  • Page 224 MAC frames are copied from the monitored port and since the analyzer port does not itself run the MAC protocol, the probe must be able to attach to the switch without trying to insert by means of the MAC protocol.

  • Page 225: Switched Port Analyzer Screen

    0. To save the changes, select Return Note: The analyzer port and the monitored port must be on the same physical switch, not on different switches in the stack. Monitoring Port Traffic SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01...
  • Page 226 SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01 Monitoring Port Traffic...

  • Page 227: 10. Troubleshooting

    Obtaining Service There are no serviceable parts inside the switch. Do not remove the cover for any reason. If you think your switch or its SSIMs requires service, please contact Cabletron Technical Support. Please refer to Chapter 11, “Getting in Touch with Technical Support”...

  • Page 228: Choosing A Troubleshooting Procedure

    4. Observe the LEDs on the switch front panel. Figure 3 on page 5 illustrates the LEDs. For explanations of the LEDs, see the section “Status and Activity LEDs” on page 8. Review this section before proceeding with the troubleshooting process.
  • Page 229 TFTP or serial download as described in Chapter 6, “Switch Configuration”. 2. Reset the switch by disconnecting the power cord, waiting 10 seconds, and then reconnecting it to the electrical outlet. If the problem goes away, resume using the switch.
  • Page 230 If it does not, the problem is in the switch. In this case, contact technical support as described in Chapter 11, “Getting in Touch with Technical Support”.
  • Page 231 — If the problem persists, continue with step 7. 7. The problem does not appear to be in the switch and the cables and devices connected to the switch. The problem might be in the network applications or other software running on the devices.
  • Page 232 SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01 Troubleshooting...

  • Page 233: 11. Getting In Touch With Technical Support

    The device history (i.e., have you returned the device before, is this a recurring problem, etc.) • Any previous Return Material Authorization (RMA) numbers Getting in Touch with Technical Support http://www.cabletron.com/ (603) 332-9400 support@cabletron.com ftp://ftp.cabletron.com/ anonymous your email address SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01...

  • Page 234: Problem Report Form

    Adapter type: Operating system: Network OS: Driver name: Driver version: Company: ____________________________ Name: ______________________ Address: __________________________________________________________ Country: _______________________ Phone/Fax: ________________________ E-mail: _____________________ SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01 Switch Information Switch Configuration Adapter Information Getting in Touch with Technical Support...
  • Page 235 Problem Description Network Installation Sketch Getting in Touch with Technical Support SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01...
  • Page 236 SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01 Getting in Touch with Technical Support...

  • Page 237: Appendix A. Abbreviations

    DSRR Dynamic Source Route Recovery Disabled Data Terminal Equipment Dedicated Token Ring EPROM Erasable Programmable Read Only Memory Electronic Industry Association Electrostatic Discharge Full-duplex Finite State Machine File Transfer Protocol Forwarding Half-duplex Abbreviations SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01...
  • Page 238 Network Node Manager Non Source-Routed Out-of-Band Management PROM Programmable Read Only Memory Quad Token-Ring Port (Internal MAC controller for four ports) Remote Monitoring RMON Recommended Standard Standby Monitor Present Systems Network Architecture SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01 Abbreviations...
  • Page 239 TFTP Token Passing TrBRF Token Ring Bridge Relay Function TrCRF Token Ring Concentrator Relay Function Transmit Immediate Universal Administrated Address Upstream Neighbour Address Unshielded Twisted Pair VLAN Virtual LAN Wide Area Network Abbreviations SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01...
  • Page 240 SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01 Abbreviations...

  • Page 241: Appendix B. Cable And Pin Information

    232 cable to the MANAGEMENT port and the other end to the PC or DTE device attach a null-modem adapter to the MANAGEMENT port. Then, attach a straight-through modem cable to the null- modem adapter. SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01...

  • Page 242: Out-Of-Band Management Port And Cable Pin-Outs

    Table 14. Pin-out of the Management Port TIA/EIA-232 Modem Cable Connections Use a standard straight-through modem cable to connect the switch’s MANAGEMENT port to a modem. SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01 Signal Name CHS GND SIG GND Cable and Pin Information...

  • Page 243: Figure 28. Tia/Eia 232 Null-Modem Cable For The 25-Pin Connector

    DTR (pin 4) and RTS (pin 7) must be on, or high, on your terminal or in your terminal emulation program. Figure 29. TIA/EIA 232 Null-Modem Cable for the 9-pin Connector Cable and Pin Information SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01...

  • Page 244: Twisted-Pair Cable Pin Outs

    Diagrams of these cables follow. Straight-Through 100-Ohm/120-Ohm Cable The switch RJ-45 connector makes ground available on the shield and on pins 1, 2, 7, and 8. Shielded cables will provide continuity for ground to any shielded connector on the other end of the cable.

  • Page 245: Cabling Recommendations

    Cable and Pin Information Impedance 150 Ohm 150 Ohm 150 Ohm 150 Ohm 100 Ohm 100 and 120 Ohm 100 and 120 Ohm 100 and 120 Ohm SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01...
  • Page 246 150 Ohm shielded media (type 1, 1A, 2, or 2A). When cable segments in the network are 100 or 120 Ohm, this number is decreased to 132 (72 if using any 4 Mbps only adapters or filters). SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01 Cable and Pin Information...

  • Page 247: Cable Length And Lobe Wiring Rules For Dedicated-Media Lan Segments

    Not Supported Not Supported 100 Ohm Type 3 100 m (328 ft) Not Supported Not supported SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01 Type 9 295 m (968 ft) Not Supported 100 Ohm Category 3 250 m (820 ft) 100 m (328 ft)

  • Page 248: Table 19. Lobe Lengths For 100 Or 120 Ohm Shielded Or Unshielded Cable

    Cladding Diameter Numerical Aperture (NA) Table 21. Alternate Optical Fibers For alternate optical fibers, see the second note in the next section. SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01 100 or 120 Ohm Category 4 350 m (1,148 ft) 200 m (656 ft) Not Supported 62.5/125 µm...

  • Page 249: Cable Length And Lobe Wiring Rules For Shared-Media Lan Segments

    233. Note: For an STS16-20RM, the acceptable cable lengths are defined by the hub or concentrator attached to the switch port, but in general the distances are half of that stated in the tables above for dedicated-media segments.
  • Page 250 SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01 Cable and Pin Information...
  • Page 251 BootP BPDU on Local VLAN Configuration screen BRF state BRF/CRF on the VLAN Configuration screen building wiring SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01 connecting devices to token-ring ports cabinet mounting switches in cables length rules pin information pin-outs of MANAGEMENT port...
  • Page 252 Display Summary screen Download/Upload menu DSAP DSAPs on the Port Filtering Attributes screen SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01 DSRR DSRR Acting as Backup Table screen DSRR Neighbor Table screen DSRR Status Tables Screen Dynamic Source Route Recovery...
  • Page 253 (MTU) of the BRF Mbps Mean Time Between Failure (MTBF) menus 802.5 DTR MAC Information Address Aging Address Tables Configuration Console Configuration CrossLink Download/Upload Filters & Port Security IP Configuration main menu SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01 index-3 5, 66, 227...
  • Page 254 Module Information screen SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01 number of switches participating in stack NVRAM clearing opening the switch not allowed...
  • Page 255 Serial Link Download SNMP Configuration Spanning Tree for BRF Spanning Tree for CRF Stack Configuration Station-CPort Information Switch Configuration Switched Port Analyzer Swtich Statistics Telnet Configuration Telnet Sessions TFTP Download/Upload Trap Receivers SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01 index-5 15, 41...
  • Page 256 BRF in specifications specifications aggregate switching rate capacity lookup table size maximum aggregate frame rate SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01 maximum frame rate per port maximum number of logical rings maximum number of VLANs performance physical characteristics switch latency...
  • Page 257 VLAN Port Configuration screen VLAN Route Descriptor Table screen VLAN statistics VLAN Statistics for BRF screen VLAN Statistics for CRF screen VLAN support general description weight of switch width of switch SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01 index-7 screen screen...
  • Page 258 SmartStack STS16-20RM/STS16-20FRM Token Ring Switches, P/N: 9032957-01 Index...
  • Page 260 * 710001810*...

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