Cabletron Systems TSX-1620 User Manual

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TSX-1620

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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.

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Chapter 1 Introduction to SPMA for the TSX-1620

Using the TSX-1620 User’s Guide .............................................................................. 1-1

What’s NOT in the TSX-1620 User’s Guide. . ................................................... 1-2

Conventions................................................................................................................... 1-3

Screen Displays ......................................................................................................1-3

Using the Mouse ....................................................................................................1-5

Getting Help ..................................................................................................................1-6

TSX-1620 Firmware....................................................................................................... 1-7

Chapter 2 Using the TSX-1620 Hub View

Using the Hub View ..................................................................................................... 2-1

Navigating Through the Hub View ....................................................................2-2

Hub View Front Panel........................................................................................... 2-3

Using the Mouse in the TSX-1620 Hub View.....................................................2-5

The TSX-1620 Application Displays.................................................................... 2-6

The Interface Application Display ............................................................... 2-7

The Bridge Application Display................................................................... 2-8

Monitoring Device Performance................................................................................. 2-9

Port Display Form.................................................................................................. 2-9

Interface Port Display Form Options........................................................... 2-9

Port Color Codes for the Interface Application Display......................... 2-12

Bridge Port Display Form Options ............................................................2-13

Port Color Codes for the Bridge Application Display............................. 2-14

Clearing Statistical Information......................................................................... 2-14

Managing the Device.................................................................................................. 2-15

Setting the Polling Intervals ............................................................................... 2-15

Using the Bridge Conﬁg Utility......................................................................... 2-17

Deﬁning Community Names............................................................................. 2-18

Conﬁguring Your TSX-1620’s Serial Port .........................................................2-19

Performing IF Conﬁguration.............................................................................. 2-21

Changing the Displayed Interface.............................................................. 2-22

Performing Interface Conﬁguration ..........................................................2-22

Viewing NetBios Information............................................................................ 2-23

Viewing and Changing System Information................................................... 2-24

Setting the Device Date, Time, and Daylight Savings Mode..................2-25

Conﬁguring Port Security................................................................................... 2-25

Viewing Your Port Security Settings.......................................................... 2-26

Conﬁguring Your Port Security Settings................................................... 2-28

Viewing the Interface List................................................................................... 2-29

iii

Contents

Accessing the MIB I, II Tool................................................................................ 2-30

Accessing Bridge Management.......................................................................... 2-30

Performing Source Routing Conﬁguration for a Port.....................................2-30

Viewing a Bridge Port’s Source Address List ..................................................2-31

Enabling/Disabling Bridging for TSX-1620 Ports...........................................2-32

Enabling and Disabling Bridge Ports......................................................... 2-32

Chapter 3 Using the TSX-1620 Bridge View

Bridging Basics ..............................................................................................................3-1

Transparent Bridging............................................................................................. 3-2

Source Route Bridging...........................................................................................3-2

Source Route Transparent Bridges.......................................................................3-3

Accessing the Bridge Trafﬁc View Window ..............................................................3-3

Navigating Through the Bridge Trafﬁc View.....................................................3-4

Bridge Trafﬁc View Front Panel........................................................................... 3-6

The Bridge Port Display........................................................................................3-7

Choosing Bridge Trafﬁc Information: Bridge Trafﬁc View Buttons................ 3-8

Using the Detail View Window................................................................................. 3-11

The Bridge Status Window........................................................................................ 3-12

The Bridge Statistics Window....................................................................................3-13

The Filtering Database Window ...............................................................................3-15

Viewing the Filtering Database.......................................................................... 3-16

Changing the Filtering Database Dynamic Ageing Time ..............................3-19

Changing Forwarding and Static Database Entries........................................ 3-20

Deleting a Static Table Entry .......................................................................3-22

Finding a Filtering Database MAC Address.................................................... 3-22

The Spanning Tree Protocol Window.......................................................................3-22

Changing Spanning Tree Parameters................................................................ 3-27

The Spanning Tree Port Parameters Window......................................................... 3-27

Changing a Port’s STA Parameters....................................................................3-29

The Source Routing Conﬁguration Window........................................................... 3-29

Changing Source Routing Port Parameters .....................................................3-32

Creating Bridge Trafﬁc Charts, Graphs and Meters...............................................3-33

Conﬁguring Forwarding Thresholds .......................................................................3-34

Viewing the Forwarding Log.....................................................................................3-37

Changing Polling Intervals........................................................................................ 3-39

Enabling and Disabling Ports....................................................................................3-40

Enabling and Disabling a Transparent Bridge Port ........................................3-40

Enabling and Disabling a Source Routing Bridge Port ..................................3-41

Enabling and Disabling Both Transparent and Source Routing

on a Bridge Port.............................................................................................3-42

Chapter 1

Introduction to SPMA for the TSX-1620

How to use the TSX-1620 User’s Guide; manual conventions; contacting Cabletron Technical Support; TSX-1620 ﬁrmware versions supported by SPMA

The TSX-1620 is a high-speed stand-alone Token Ring switch with the ability to

transparently switch packets among its various attached ring networks at full line

rate (4 or 16 Mbps) and with minimal latency. The TSX-1620 provides source

routing functions while using store and forward switching technology. The TSX-

1620 also provides virtual networking capability, allowing you to conﬁgure

logical rings that include multiple physical rings attached to the front panel ports

(e.g., physical rings inserted in ports 1, 2, 5, and 8 could all be assigned to a single

virtual ring network, and would communicate as if they actually were on the

same physical ring). Using this capability, 4 and 16 Mbps devices can be placed on

separate physical rings (each port automatically determines the speed of the ring

to which it is connected), allowing the 16 Mbps devices to operate at full speed,

and the switch can treat both rings as a single logical ring network. Broadcast

discovery packets can be conﬁned to a virtual subset of the attached rings, thereby

reducing overall trafﬁc on the switch.

The TSX-1620 is an 8 port switch which is expandable to 16 ports, with STP/UTP

and 4 or 16 Mbps on each port via front panel RJ-45 connectors. The device is

IEEE 802.5 compliant with support for IEEE 802.1d spanning tree, and supports

SNMP, including MIB II.

Using the TSX-1620 User’s Guide

Your SPECTRUM Portable Management Application (SPMA) for the TSX-1620

consists of a number of different applications, each of which provides a portion of

the overall management functionality. Each of these applications can be accessed

from the icon menu (if you are using a management platform) and from the

Stand-alone Launcher or the command line (if you are running in stand-alone

1-1

Introduction to SPMA for the TSX-1620

mode); in addition, several applications can also be accessed from within the Hub View, a graphical display of the TSX-1620 and its ports.

The TSX-1620 User’s Guide describes how to use many of the applications included with the module; note that the instructions provided in this guide apply to the TSX-1620 module regardless of the operating system or management platform you are using. Instructions for launching each individual function from the command line (stand-alone mode) are also included in each chapter.

Following is a description of the applications documented in this guide; while we provide as much background information as we can, we do assume that you’re familiar with Ethernet networks and general bridging and network management concepts:

• Chapter 1, Introduction to SPMA for the TSX-1620 , describes the TSX-1620

User’s Guide and the conventions used in this and other SPMA manuals,

explains where to ﬁnd information about the TSX-1620, and tells you how to

contact Cabletron Systems Technical Support.

• Chapter 2, Using the TSX-1620 Hub View , describes the visual display of the

Hub and explains how to use the mouse within the Hub View; the operation

of some basic functions (changing the Hub View display, opening menus and

windows, enabling and disabling ports, checking device status, and so on)

available only from within the Hub View is also described. You can access the

Hub View application from the icon menu or the command line.

• Chapter 3, Using the TSX-1620 Bridge View , provides detailed instructions

for conﬁguring and managing the TSX-1620’s powerful bridging capabilities,

including monitoring bridge operation, using the ﬁltering database, and

setting forwarding thresholds and notiﬁcation options. You can access the

Bridge View from the Hub View, the icon menu or the command line.

What’s NOT in the TSX-1620 User’s Guide. . .

The following standard SPMA tools are available through the TSX-1620 module and are explained in the SPECTRUM Portable Management Application Tools

Guide :

• MIB I, II

• MIBTree

The MIB I, II application is available from the Hub View, the platform console window Tools menu, the Stand-alone Launcher window, or the command line. The MIBTree application is available from the platform console window Tools menu, the Stand-alone Launcher window, or the command line.

Instructions on discovering Cabletron devices, creating icons, and accessing the icon menus within your management platform are included in your Installing

and Using SPECTRUM for... guide. If you are using SPMA for the TSX-1620 in

stand-alone mode — that is, without beneﬁt of a speciﬁc network management

1-2 Using the TSX-1620 User’s Guide

system — instructions for starting each application from the command line are

included in each chapter, both in this guide and in the SPMA Tools Guide .

Conventions

SPECTRUM Portable Management Applications — including the TSX-1620

module — can work with a number of different network management systems

running on several different operating systems and graphical user interfaces. This

versatility presents two documentation problems: ﬁrst, there is no standard

terminology; and second, the appearance of the windows will differ based on the

graphical interface in use. For the sake of consistency, the following conventions

will be followed throughout this and other SPMA guides.

Screen Displays

Introduction to SPMA for the TSX-1620

SPMA runs under a variety of different operating systems and graphical user

interfaces. To maintain a consistent presentation, screen displays in this and other

SPMA guides show an OSF/Motif (X Windows) environment. If you’re used to a

different GUI, don’t worry; the differences are minor. Buttons, boxes, borders, and

menus displayed on your screen may look a bit different from what you see in the

guide, but they’re organized and labelled the same, located in the same places,

and perform the same functions in all screen environments.

Some windows within SPMA applications can be re-sized; those windows will

display the standard window resizing handles employed by your windowing

system. Re-sizing a window doesn’t re-size the information in the window; it just

changes the amount of information that can be displayed (see Figure 1-1). When

you shrink a window, scroll bars will appear as necessary so that you can scroll to

view all the information that is available.

Conventions 1-3

Introduction to SPMA for the TSX-1620

Use the scroll bars provided to choose what to display in a window that’s been resized

Click here to display footer message history

Figure 1-1. Window Conventions

Some windows will also contain a button; selecting this button launches a History window (Figure 1-2) which lists all footer messages that have been displayed since the window was ﬁrst invoked. This window can help you keep track of management actions you have taken since launching a management application.

1-4 Conventions

Introduction to SPMA for the TSX-1620

Using the Mouse

The UNIX mouse has three buttons. Procedures within the SPMA document set

refer to these buttons as follows:

Figure 1-2. The History Window

Button 1

Button 2

Button 3

Figure 1-3. Mouse Buttons

If you’re using a two-button mouse, don’t worry. SPMA doesn’t make use of

mouse button 2. Just click the left button for button 1 and the right mouse button

when instructed to use mouse button 3.

Conventions 1-5

Introduction to SPMA for the TSX-1620

Whenever possible, we will instruct you on which mouse button to employ; however, menu buttons within SPMA applications will operate according to the convention employed by the active windowing system. By convention, menu buttons under the Motif windowing environment are activated by clicking the left mouse button (referred to as mouse button 1 in SPMA documentation), and there is no response to clicking the right button (mouse button 3). Under OpenWindows, menu buttons can be activated by clicking the right button, and convention dictates that the left button activates a default menu option; within SPMA, that default option will also display the entire menu. Because of this difference, references to activating a menu button will not include instructions about which mouse button to use. All other panels from which menus can be accessed, and all buttons which do not provide access to menus, will operate according to SPMA convention, as documented.

Getting Help

If you need additional support related to SPMA, or if you have any questions, comments, or suggestions related to this manual, contact Cabletron Systems Technical Support. Before calling, please have the following information ready:

• The product name and part number

• The version number of the program that you need help with. SPMA is

modular, which means each application will have a speciﬁc revision number.

Where applicable, an INFO button provides the version number; you can also

view the version number for any application by typing the command to start

the application followed by a -v .

You can contact Cabletron Systems Technical Support by any of the following methods:

By phone: Monday through Friday between 8 AM and 8 PM

Eastern Standard Time at (603) 332-9400.

By mail: Cabletron Systems, Inc.

PO Box 5005 Rochester, NH 03866-5005

By CompuServe

By Internet mail: support@ctron.com

FTP ctron.com (134.141.197.25)

: GO CTRON from any ! prompt

Password

By BBS: (603) 335-3358

Modem Setting 8N1: 8 data bits, 1 stop bit, No parity

1-6 Getting Help

anonymous your email address

For additional information about Cabletron Systems products, visit our World

Wide Web site: http://www.cabletron.com/

TSX-1620 Firmware

SPMA for the TSX-1620 has been tested against ﬁrmware versions 1.3.6 and 1.4.5;

if you have an earlier version of ﬁrmware and experience problems running

SPMA contact Cabletron Systems Technical Support for upgrade information.

Introduction to SPMA for the TSX-1620

TSX-1620 Firmware 1-7

Introduction to SPMA for the TSX-1620

1-8 TSX-1620 Firmware

Using the TSX-1620 Hub View

Navigating through the Hub View, monitoring hub performance; managing the hub

Chapter 2

The heart of the SPECTRUM Portable Management Application (SPMA) for the

TSX-1620 is the Hub View, a graphical interface that gives you access to many of

the functions that provide control over the TSX-1620.

Using the Hub View

There are two ways to open the Hub View: if you are working within a network

management system, you can select the Hub View option from the icon menu;

speciﬁc directions for creating a TSX-1620 icon and accessing the icon menu can

be found in the appropriate Installing and Using SPECTRUM for... guide. If you

are running the TSX-1620 module in a stand-alone mode, type the following at the

command line:

spmarun tsxmod <IP address> <community name>

The community name you use to start the module must have at least Read access;

for full management functionality, you should use a community name that

provides Read/Write or Superuser access. For more information on community

names, consult the appropriate Installing and Using SPECTRUM for... guide,

and/or the Community Names chapter in the SPMA Tools Guide .

2-1

Using the TSX-1620 Hub View

The spmarun script invoked ﬁrst in the above command temporarily sets the environment

NOTES

variables SPMA needs to operate; be sure to use this command any time you launch an application from the command line. This script is automatically invoked when you launch an application from the icon menu or from within the Hub View.

If you wish to conﬁgure your TSX-1620 in any way, be sure to use a community name with at least Read/Write access. If you only wish to view current settings, a community name with Read access will be sufﬁcient.

If there is a hostname mapped to your TSX-1620’s IP address, you can use <hostname> in place of <IP address> to launch this application. Please note, however, that the hostname is not the same as the device name which can be assigned via Local Management and/or SPMA; you cannot use the device name in place of the IP address.

Navigating Through the Hub View

Within the Hub View, you can click mouse buttons in different areas of the window to access various menus and initiate certain management tasks. The following diagrams describe the information displayed in the Hub View and show you how to use the mouse to display the TSX-1620’s menus.

2-2 Using the Hub View

Using the TSX-1620 Hub View

Front Panel

Device summary information

Hub View Front Panel

In addition to the graphical display of the TSX-1620’s ports, the Hub View gives

you device level summary information. The following Front Panel information

appears to the right of the port display in the Hub View:

Contact Status is a color code that shows the status of the connection between

SPMA and the device:

• Green indicates a valid connection.

• Blue means that SPMA is trying to reach the device but doesn’t yet know if the connection will be successful.

• Red means that SPMA is unable to contact or has lost contact with the device.

Figure 2-1. TSX-1620 Hub View

Using the Hub View 2-3

Using the TSX-1620 Hub View

Uptime

The time that the device has been running without interruption. The counter resets to 0 days 00:00:00 (days:HH:MM:SS) when one of the following occurs:

• Power to the device is cycled.

• The device is reset manually.

Device Name

This ﬁeld displays the device’s MIB II ifName value. You can set this value using the SNMP MIB2 System Group window, available from the Interface menu. Consult your SPMA Tools Guide for detailed information about the System Group window and its use.

Device Location

This ﬁeld displays the device’s MIB II ifLocation value. You can set this value using the SNMP MIB2 System Group window, available from the Interface menu. Consult your SPMA Tools Guide for detailed information about the System Group window and its use.

IP Address

The device’s Internet Protocol address; this ﬁeld will display the IP address you have used to create the TSX-1620 icon (if you are running the Hub View from a management platform) or the IP address you used to launch the Hub View program (if you are running in stand-alone mode). You cannot change the TSX1620’s IP address from SPMA.

Clicking the Device button displays the Device menu, Figure 2-2, which lets you open the Polling Intervals window.

Figure 2-2. TSX-1620 Hub View Device Menu

See Setting the Polling Intervals on page 2-15 for details about the Polling Intervals window.

Note that the Device menu does not provide access to every application which is available to the TSX-1620; some information is only available from the Module, Interface, Bridge, and/or Bridge Port menus, and several applications can only be accessed either from the icon menu (if you are running under a network management platform) or from the command line (if you are running in standalone mode). See Chapter 1, Introduction to SPMA for the TSX-1620, for a complete list of applications available to the TSX-1620 and how to access each one.

2-4 Using the Hub View

Clicking mouse button 1 on the Quit button closes all Hub View application windows; any open applications which can also be accessed from the command line or from the icon menu will remain open.

Using the Mouse in the TSX-1620 Hub View

Each of the TSX-1620’s ports will be displayed in the hub view; use the mouse as indicated in the illustration in the following diagram (Figure 2-3) to access Module, Interface/Bridge, and Bridge Port menus and functions.

Using the TSX-1620 Hub View

Module Type

Click button 3 to display the Module menu.

Port Display Form

Click button 3 to display either the Interface or Bridge menu, depending on the application display mode currently in effect. See The TSX-1620

Application Displays, on page 2-6,

for details on the application display modes.

Using the Interface or Bridge menus, you can change the port display form shown in the Port Status boxes to any one of the following:

- Oper Status

- Type

- Speed

- Interface Number

- MIB-II Statistics

- Admin (Bridge)

- Tp Frames Forwarded

- Tp Frames Filtered

- Sr Frames Forwarded

- Bridge Port Number.

Module Index

Click button 3 to display the Module menu.

Port Status

The Port Status display changes with the type of port display format selected. Statistical selections display values in a statistic/ second format. Load displays trafﬁc as a percentage of theoretical maximum capacity. Clic k button 3 to display the Bridge Port menu when you are viewing the

Bridge application display mode. See

The TSX-1620 Application Displays ,

on page 2-6, for details on the application display modes.

Port Index

Click button 3 to display the Bridge Port menu when you are viewing the

Bridge application display mode. See

The TSX-1620 Application Displays ,

on page 2-6, for details on the application display modes.

When you change the port display form, the text in this box will change to reﬂect the chosen form. See Port

Display Form, later in this chapter , f or

details.

Figure 2-3. Mousing Around the TSX-1620 Hub View

Using the Hub View 2-5

Using the TSX-1620 Hub View

The TSX-1620 Application Displays

The TSX-1620 Hub View has two different application display modes: Interface and Bridge. Each mode features different port display forms and offers different menus. The Interface application display is shown by default when the TSX-1620 Hub View is launched. To switch between the Interface and Bridge application displays:

1. Click on the module index or module type, at the top of the TSX-1620 port display column in the Hub View (see Figure 2-4, below). The Module menu will appear.

2. Drag down to Application Display, then right to Interface or Bridge, depending on your intended selection. The Hub View will change to reﬂect your selection.

Figure 2-4. Changing the TSX-1620 Application Display

When you change the application display mode, the port display form will change to the default form for the chosen mode. For the Interface application display, the default port display form is Oper Status. For the Bridge application display, the default port display form is Admin. You can change the port display form from either application display mode using the Port Display Form selection from the Interface or Bridge menus. For details on the port display form selections available for each application display, see Port Display Form, later in this chapter.

Each application display mode offers some different menus and menu selections, as illustrated in Figure 2-5 and Figure 2-6, below.

2-6 Using the Hub View

The Interface Application Display

The Interface application display allows you to view the interfaces according to MIB II status and statistics. The default port display form for the Interface application display is operational status (OperStatus).

Using the TSX-1620 Hub View

The Module Menu

The Interface Menu

Figure 2-5. The Interface Application Display Menu Structure

Using the Hub View 2-7

Using the TSX-1620 Hub View

The Bridge Application Display

The Bridge application display allows you to view the bridging interfaces according to Bridge statistics; it also gives you access to the Bridge View and functions, as well as the Bridge Port menu. The default port display form for the Bridge application display is Admin.

The Module Menu

The Bridge Menu

The Bridge Port Menu

Figure 2-6. The Bridge Application Display Menu Structure

Note that the Module menu offers the same selections for both application display modes.

The Bridge menu, available only from the Bridge application display mode, allows you to launch the TSX-1620 Bridge View, which provides bridge monitoring and management functions for the TSX-1620 (see Chapter 3, TSX-1620 Bridging, for details).

2-8 Using the Hub View

Monitoring Device Performance

The information displayed in the Hub View can give you a quick summary of device activity, status, and conﬁguration. SPMA can also provide further details about hub performance via its four-level menu structure. The Device, Module, Interface/Bridge and Bridge Port menus give you control over the device at four levels for both the Interface and Bridge application displays and give you access to the tools, menus, and windows that let you monitor speciﬁc aspects of device performance, change display options, and set TSX-1620 operating and notiﬁcation parameters. See Figure 2-5 and Figure 2-6 to view the different menus and their contents.

Port Display Form

You can change the type of information displayed for each port by using the Port Display Form option on the Interface or Bridge menus. Remember that you need to change the application display to the proper mode to access the desired menu (see The TSX-1620 Application Displays for details).

To change the port display form:

Using the TSX-1620 Hub View

1. Click in the appropriate area to display the Interface or Bridge menu (refer to

Figure 2-3 on page 2-5).

2. Dr ag down to P ort Display Form, then right as necessary to select one of the

port display options. The current selection will be displa y ed in the Port Display Form text box, just above the ports.

Interface Port Display Form Options

Oper Status

The Oper Status port display form displays the current status of the port — ON, OFF, NLK (no link), Test, or --- (unknown). Oper Status is determined by a

combination of MIB-II interface operational status (ifOperStatus), administrative status (ifAdminStatus), and the interface’s physical link status (if applicable).

• The ON status indicates that the interface’s operational status is determined as

“UP”, that it has been administratively enabled, and that a physical link has been detected at the port. A status of ON indicates that the port can send and receive NMS packets, but does not indicate whether the port’s bridging functions are enabled.

To determine whether a port’s bridging functions are enabled, change the application

NOTE

display mode to Bridge, and then select the Admin port display form. For more information, see the deﬁnition of the Admin port display form, below.

Monitoring Device Performance 2-9

Using the TSX-1620 Hub View

• A status of OFF indicates that the port has been physically disabled, or is broken.

• NLK (no link) indicates that the interface’s operational status is determined as “UP”, and it has been administratively enabled, but no physical link state to the port has been detected.

• A status of Test indicates that the interface is in some operational or administrative test status, and is unable to pass packets.

• The --- (unknown) status indicates that the state of the port’s operational, link, and administrative states were not returned from the device.

Type

Displays the MIB-II ifType. As deﬁned by the MIB “the type of interface, distinguished according to the physical/link protocol(s) immediately below the network layer in the protocol stack.”

Speed

Displays the operating speed of the interface; as deﬁned by the MIB-II ifSpeed, “An estimate of the interface’s current bandwidth in bits per second. For interfaces which do not vary in bandwidth or for those where no accurate estimation can be made, this object should contain the nominal bandwidth.”

Interface Number

Displays each port’s interface number, including the network management port.

Statistics

From the Interface or Bridge menu, you can display any one of the statistics detailed below:

• Load will display the percentage of total, inbound, or outbound network load processed by each port during the last polling interval.

- Total will display the percentage of total, inbound, and outbound network

load processed by each port during the last polling interval. This percentage reﬂects the network load generated per polling interval by devices connected to the port (determined by adding the change in the port’s MIB-II ifInOctets and ifOutOctets values during the last polling interval and multiplying by 800) compared to the port’s ifSpeed value.

- In shows the percentage of packets received during the last polling

interval from devices connected to the port. This percentage reﬂects the packets received (determined by the change in the port’s MIB-II ifInOctets value during the last polling interval, multiplied by 800) compared to the port’s ifSpeed value.

2-10 Monitoring Device Performance

Using the TSX-1620 Hub View

- Out shows the percentage of packets transmitted during the last polling interval to devices connected to the port. This percentage reﬂects the packets transmitted (determined by the change in the port’s MIB-II ifOutOctets value during the last polling interval, multiplied by 800) compared to the port’s ifSpeed value.

• Discards shows the percentage of total, inbound, or outbound packets that were discarded by the port during the last polling interval due to congestion or ﬁltering.

- Total shows the percentage of packets that were discarded by the port

(determined by adding the port’s MIB-II ifInDiscards and ifOutDiscards) during the last polling interval due to congestion or ﬁltering. This percentage reﬂects the packets discarded compared to the total number of packets detected at the port: (ifInDiscards+ifOutDiscards)/(ifInUcastPkts+

ifOutUcastPkts+ifInNUcastPkts+ifOutNUcastPkts).

- In shows the percentage of packets received by the port that were

discarded (determined by the port’s MIB-II ifInDiscards value) during the last polling interval due to congestion. This percentage reﬂects the packets discarded compared to the total number of packets detected at the port:

ifInDiscards/(ifInUcastPkts+ifOutUcastPkts+ifInNUcastPkts+ ifOutNUcastPkts).

- Out shows the percentage of packets ﬁltered (not forwarded) by the port

(determined by the port’s MIB-II ifOutDiscards value) during the last polling interval. This percentage reﬂects the packets discarded compared to the total number of packets detected at the port:

ifOutDiscards/(ifInUcastPkts+ifOutUcastPkts+ifInNUcastPkts+ ifOutNUcastPkts).

• Errors shows the percentage of total, inbound, or outbound packets that were discarded by the port during the last polling interval due to hardware reception or transmission errors.

- Total shows the percentage of packets that were discarded by the port

(determined by adding the port’s MIB-II ifInErrors and ifOutErrors values) during the last polling interval due to hardware reception or transmission errors. This percentage reﬂects the packets discarded compared to the total number of packets detected at the port: (ifInErrors+ifOutErrors)/ (ifInUcastPkts+ifOutUcastPkts+ifInNUcastPkts+ifOutNUcastPkts).

- In shows the percentage of packets that were discarded by the port

(determined by the port’s MIB-II ifInErrors value) during the last polling interval due to hardware reception errors. This percentage reﬂects the packets discarded compared to the total number of packets detected at the port: ifInErrors/(ifInUcastPkts+ifOutUcastPkts+ifInNUcastPkts+ ifOutNUcastPkts).

Monitoring Device Performance 2-11

Using the TSX-1620 Hub View

- Out shows the percentage of packets that were discarded by the port (determined by the port’s MIB-II ifOutErrors value) during the last polling interval due to hardware transmission errors. This percentage reﬂects the packets discarded compared to the total number of packets detected at the port:

ifOutErrors/(ifInUcastPkts+ifOutUcastPkts+ifInNUcastPkts+ ifOutNUcastPkts).

• Non-Unicast (Nucast) shows the percentage of packets transmitted or received by the port during the last polling interval that were multicast packets.

- Total shows the percentage of packets transmitted or received by the port

during the last polling interval that were multicast packets. This percentage reﬂects the multicast packets detected (determined by adding the port’s MIB-II ifInNUcastPkts and ifOutNUcastPkts values) compared to the total number of packets detected at the port: (ifInNUcastPkts+

ifOutNUcastPkts)/(ifInUcastPkts+ifOutUcastPkts+ifInNUcastPkts+ ifOutNUcastPkts).

- In shows the percentage of packets received by the port during the last

polling interval that were multicast packets. This percentage reﬂects the multicast packets detected (determined by the port’s MIB-II ifInNUcastPkts value) compared to the total number of packets detected at the port:

ifInNUcastPkts/(ifInUcastPkts+ifOutUcastPkts+ifInNUcastPkts+ ifOutNUcastPkts).

- Out shows the percentage of packets transmitted by the port during the

last polling interval that were multicast packets. This percentage reﬂects the multicast packets detected (determined by the port’s MIB-II ifOutNUcastPkts value) compared to the total number of packets detected at the port: ifOutNUcastPkts/(ifInUcastPkts+ifOutUcastPkts+ifInNUcastPkts +ifOutNUcastPkts).

For the statistical port display form options listed above, three dashes (---) will display for

NOTE

all inactive ports; any active (green) port will display a numeric value, even if it’s 0 (zero).

Port Color Codes for the Interface Application Display

For each port display form, the color-coding of each interface reﬂects a combination of MIB-II interface operational status (ifOperStatus), administrative status (ifAdminStatus), and the interface’s physical link status (if it applies).

Green On — The interface’s operational status is returned as “UP” —

and it has been administratively enabled; if the interface supports link state, a physical link has been detected at the port.

2-12 Monitoring Device Performance

Yellow No Link — The interface’s operational status is returned as “UP”

Blue Off — The interface is physically disabled (its operational status

Red Off — The interface is physically disabled (its operational status

(Magenta UNKnown — The interface cannot return the requested

Gray (---) Unknown — The port’s ifOperStatus was not returned from the

Bridge Port Display Form Options

Using the TSX-1620 Hub View

and it has been administratively enabled, but no physical link state to the port has been detected. This will not appear for interfaces that do not support link state.

is returned as “DOWN”), and it had also been administratively disabled prior to entering the physically disabled state.

is returned as “DOWN”); however, prior to being physically disabled, the port had been in an administratively enabled state.

information.

device; the state of the port cannot been determined.

Admin

Display’s the port’s current bridging status — FWD (forwarding), DIS (disabled), LIS (listening), LRN (learning), BLK (blocking), BRK (broken), or UNK (unknown). These bridge port status conditions are deﬁned as follows:

• FWD (forwarding) when the interface is on-line and forwarding packets from

one network segment to another.

• DIS (disabled) when bridging at the interface has been disabled by

management, and no trafﬁc can be received or forwarded on this interface.

• LIS (listening) when the interface is not adding information to the ﬁltering

database. It is monitoring Bridge Protocol Data Unit (BPDU) trafﬁc while preparing to move to the forwarding state.

• LRN (learning) when the Forwarding database is being created, or the

Spanning Tree Algorithm is being executed because of a network topology change.

• BLK (blocking) when the interface is on-line, but ﬁltering trafﬁc from going

across the TSX-1620 from one network segment to another.

• BRK (broken) when the physical interface has malfunctioned.

• UNK (unknown) if the interface’s status cannot be determined.

Tp Frames Forwarded

Displays the percentage of Transparent bridging frames that have been transmitted to or received from the port’s attached segment that have been forwarded to their destination.

Monitoring Device Performance 2-13

Using the TSX-1620 Hub View

Tp Frames Filtered

Displays the percentage of valid frames received by this port that were discarded by the forwarding process.

Sr Frames Forwarded

Displays the percentage of Source Route bridging frames that have been transmitted to or received from the port’s attached segment that have been forwarded to their destination.

Bridge Port Number

Displays the port’s bridge port number.

Port Color Codes for the Bridge Application Display

No matter which Bridge Port Status display form is selected, each bridge interface is color-coded to reﬂect the Bridge Port state, as follows:

• Blue — The bridge port is administratively Disabled.

• Magenta — The bridge port is in the Listening or Learning state.

• Green — The bridge port is on line and Forwarding.

• Orange — The bridge port is currently Blocking.

• Red — The bridge port is malfunctioning.

• Gray — No information is being returned from the interface; its ifOperStatus is not being returned.

Clearing Statistical Information

The Clear Stats selection in the TSX-1620 Module menu will reset the device’s statistical counters to zero. To reset the TSX-1620’s statistical counters:

1. Click on the module index or module type to display the Module menu (see

Figure 2-3 on page 2-5).

2. Drag down to Clear Stats, and release. The TSX-1620’s statistical counters will reset to 0, and begin updating at the rate determined by the Statistics polling interval.

2-14 Monitoring Device Performance

Managing the Device

In addition to the performance information described in the preceding section, the Hub View also provides you with the tools you need to conﬁgure your TSX1620 and keep it operating properly. Device management functions include setting polling intervals, performing bridge conﬁguration, setting community names, performing console conﬁguration, performing If conﬁguration, performing NetBIOS conﬁguration, viewing and changing system information, conﬁguring port security, viewing the interface list, accessing the MIB I, II Tool, accessing bridge management, performing source routing conﬁguration for TSX1620 ports, viewing a bridge port’s source address list, and enabling and disabling bridging for the ports.

Setting the Polling Intervals

To set the polling intervals used by SPMA and the TSX-1620:

1. Click on to display the Device menu.

2. Drag down to Polling Intervals, and release.

Using the TSX-1620 Hub View

Figure 2-7. TSX-1620 Polling Intervals

3. To activate the desired polling, click mouse button 1 on the selection box to

the right of each polling type ﬁeld.

4. To change a polling interval, highlight the value you would like to change, and

enter a new value in seconds. Note that the Use Defaults option must selected, or values will revert back to default levels when you click on

, and your changes will be ignored.

Managing the Device 2-15

not

Using the TSX-1620 Hub View

5. If you wish to use your new polling interval settings as the default values that SPMA will use for each TSX-1620 you are managing, use mouse button 1 to select the Save As Defaults option.

6. If y ou wish to replace e xisting values with the current set of def ault v alues, use mouse button 1 to select the Use Defaults option.

7. Click mouse button 1 on once your changes are complete. Changes take effect after the current polling cycle is complete.

You can set the update intervals for the following:

Contact Status

This polling interval controls how often the TSX-1620 is “pinged” to check SPMA’s ability to maintain a connection with the device.

Device General Status

This polling interval controls how often the Hub View Front Panel Information — such as Uptime, Device Name, and so forth — and some port status information is updated.

NOTE

Device Conﬁguration

This polling interval controls how often a survey is conducted of the TSX-1620’s physical conﬁguration; information from this poll would change the Hub View to reﬂect any changes in the device’s physical conﬁguration.

Port Operational State

This polling interval controls the update of the information displayed in the Port Status boxes for each of the TSX-1620’s ports. Port state information includes the selected Port Display Form information and the associated color codes.

Statistics

This polling interval controls how often the information displayed in the Port Status boxes is updated when the Port Display Form is set to a statistical selection.

SPMA generates network trafﬁc when it retrieves the above-described information; keep in mind that shorter intervals mean increased network trafﬁc. Range limits for these polling times are 0-999,999 seconds; however, an entry of 0 will be treated as a 1.

2-16 Managing the Device

Using the Bridge Conﬁg Utility

The Bridge Conﬁg utility allows you to enable or disable Spanning Tree for your TSX-1620, as well as deﬁne a group destination (multicast) MAC address to be used in implementing the source routing function. To access the Bridge Conﬁg window:

1. Click on the module index or module type to display the Module menu (see

Figure 2-3 on page 2-5).

2. Drag down to Module Utilities, then right to Bridge Conﬁg, and release.

Using the TSX-1620 Hub View

Figure 2-8. The Bridge Conﬁg Window

To enable or disable Spanning Tree using the Bridge Conﬁg window:

1. Click on the Spanning T ree: Enable or Disable option, as desired. Spanning

Tree will be enabled or disabled for the TSX-1620, depending on your selection. The default selection is Disable.

The Destination MAC address must be one of two group destination MAC addresses, as deﬁned by the Source Routing speciﬁcation. A frame containing the destination group address value c0:00:00:00:01:00 will be received by all stations on the sending station’s ring. A frame containing the destination group address value 80:41:00:00:00:00 will be received by all stations on all rings in a multi-ring network. To deﬁne or change the group destination (multicast) MAC address to be used in implementing the source routing function:

1. Highlight the contents of the Destination MAC ﬁeld. Type the desired group

destination MAC address in Canonical (Token Ring) format, and then press Enter or Return on your keyboard.

Managing the Device 2-17

Using the TSX-1620 Hub View

Deﬁning Community Names

The Community Names utility allows you to conﬁgure up to eight different community names that determine read-only or read-write privileges for the device. This window also allows you to establish an IP address to which SNMP traps will be sent. To invoke the Community Name window from the TSX-1620 Hub View:

1. Click on the module index or module type to display the Module menu (see

Figure 2-3 on page 2-5).

2. Drag down to Module Utilities, then right to Community Names, and release.

Figure 2-9. The TSX-1620 Community Name Window

The list at the top of the window contains entries for each of the eight available community name slots. Using this window, you can modify the names, permissions, and trap IP addresses for any of these eight available entries. To deﬁne or modify a community name entry:

1. In the window’s Community Name list, click on the entry that you wish to deﬁne or modify. The list entry will be highlighted to show that it is selected. If you are modifying an existing community name entry, its index, name, permission setting, and trap IP address will display in the ﬁelds below the list.

2. Highlight the contents of the Name ﬁeld (if any), type the desired community name, and press Enter or Return on your keyboard. The selected list entry will change to reﬂect the new name.

2-18 Managing the Device

3. To deﬁne permissions for the selected entry, click on the Read Only or Read

Write option, as desired. The selected permission will be reﬂected in the list entry.

4. To establish an IP address to which SNMP traps will be sent, highlight the

contents of the Trap IP ﬁeld, type the desired IP address, and press Enter or Return on your keyboard. The selected list entry will change to reﬂect the new trap IP address. The default value for this ﬁeld is 0.0.0.0; if this ﬁeld is left at the default value, no traps will be sent.

The Refresh button initiates a new request for Community Name information. When this button is clicked, the TSX-1620 will be queried for its community name conﬁguration, and any changes that have occurred since the window was opened (or since the Refresh button was last clicked) will be reﬂected in the Community Name window.

Conﬁguring Your TSX-1620’s Serial Port

The Console Conﬁg utility allows you to conﬁgure your TSX-1620’s serial (local management) port. Using the Console Conﬁg window you can view the port’s hardware type, select its speed, deﬁne the number of bits per character and stop bits, conﬁgure the parity and ﬂow control, and enable or disable ANSI graphics for the port. To launch the Console Conﬁg window from the TSX-1620 Hub View:

Using the TSX-1620 Hub View

1. Click on the module index or module type to display the Module menu (see

Figure 2-3 on page 2-5).

2. Drag down to Module Utilities, then right to Console Conﬁg, and release.

Managing the Device 2-19

Using the TSX-1620 Hub View

Figure 2-10. The Console Conﬁg Window

The Hardware ﬁeld at the top of the window displays your serial port’s hardware type. To conﬁgure your serial port:

1. Select your serial port’s speed by clicking on the menu button in the Speed ﬁeld to display the Speed selection menu. Select the desired port speed from the menu. The menu will disappear , and y our selection will be displa y ed in the menu button. Available speed selections are 1200, 2400, 4800, 9600, 19200, or 38400 bits per second.

2. Select the number of bits in a character for the port by clicking on the menu button in the Bits Per Char ﬁeld to display the Bits Per Character selection menu. Select the desired number of bits per char acter (7 or 8) from the menu. The menu will disappear, and your selection will be displayed in the menu button.

3. Select the number of stop bits (one, one and a half, or two) for the port by clicking on the menu button in the Stop Bits ﬁeld to display the Stop Bits selection menu. Select the desired number of stop bits from the menu. The menu will disappear, and your selection will be displayed in the menu button.

4. Select the parity of the port by clicking on the menu button in the Parity ﬁeld to display the P arity selection menu. Select the desired sense of parity (none, odd, even, mark, or space) from the menu. The menu will disappear , and y our selection will be displayed in the menu button.

2-20 Managing the Device

5. Designate the port’s ﬂow control parameter by clicking on the menu button in

the Flow Control ﬁeld to display the Flow Control selection menu. Select the desired type of ﬂow control (none, Rts-cts, or Xoff) from the menu. The menu will disappear, and your selection will be displayed in the menu button.

6. Enable or disable the ANSI Graphics option for the port by clicking either the

Enable or Disable option in the Graphics Mode ﬁeld.

Performing IF Conﬁguration

The IF Conﬁg utility allows you to establish Bridge and IP parameters for each port on your TSX-1620. Using the IF Conﬁguration window, you can establish the bridge type, enable or disable NetBIOS and Spanning Tree, assign a priority level, and deﬁne or change the IP address, subnet mask, gateway address, and MAC address for each interface (port) on your device. To launch the IF Conﬁguration window:

1. Click on the module index or module type to display the Module menu (see

Figure 2-3 on page 2-5).

2. Drag down to Module Utilities, then right to IF Conﬁg, and release.

Using the TSX-1620 Hub View

Figure 2-11. The IF Conﬁguration Window

Managing the Device 2-21

Using the TSX-1620 Hub View

Changing the Displayed Interface

The values and settings shown in the various ﬁelds in the window reﬂect the current conﬁguration of the TSX-1620 port (interface) index displayed in the

Interface ﬁeld at the top of the window. If you change the interface number in the Interface ﬁeld to a different valid ifIndex, the values and settings in the other

ﬁelds will change to reﬂect the conﬁguration of the new interface, allowing you to change the conﬁguration if desired. To change the displayed interface:

1. Highlight the contents of the Interface ﬁeld, and type the ifIndex (interface number) of the port that you wish to view. Press Enter or Return on your keyboard, and the values and settings in the other ﬁelds in this window will change to reﬂect the conﬁguration of the speciﬁed interface.

Performing Interface Conﬁguration

With the desired interface’s conﬁguration displayed in the IF Conﬁguration window, you can change any of the settings for that interface, if desired. To do so:

1. Change the type of bridging to be used for the interface by clicking on the menu button in the Bridge T ype ﬁeld to display the Bridge Type selection menu. Select the desired bridging type (unknown, transparent only, source route transparent, or source route only) from the menu. The menu will disappear, and your selection will be displayed in the menu button.

2. Enab le or disab le NetBIOS Broadcast Reduction f or the interface by selecting the Enable or Disable option in the Net BIOS ﬁeld.

3. Enable or disable Spanning Tree for the interface by selecting the Enable or Disable option in the Spanning T ree ﬁeld.

4. Assign a Token Ring priority level for the interf ace b y highlighting the contents of the Priority ﬁeld, typing the desired priority value, and pressing Enter or Return on your keyboard. You may assign any priority from 1 to 16.

5. Assign an IP address to the interface by highlighting the contents of the IP Address ﬁeld, typing the desired valid IP address in dotted decimal notation, and pressing Enter or Return on your keyboard. All of the TSX-1620’s interfaces should use the same address.

6. Deﬁne a subnet mask to be used on the interface’ s IP address b y highlighting the contents of the Subnet Mask ﬁeld, typing the desired valid subnet mask in dotted decimal notation, and pressing Enter or Return on your ke yboard. The subnet mask deﬁnes the network and host portions of the IP address.

7. Deﬁne a gateway address to be used by the interface by highlighting the contents of the Gateway Address ﬁeld, typing the desired valid gateway address in dotted decimal notation, and pressing Enter or Return on your keyboard. The gateway address is used by SNMP/UDP when attempting to traverse routed IP networks.

2-22 Managing the Device

8. Change the interface’s MAC address by highlighting the contents of the

Physical Address ﬁeld, typing the desired MAC address , and pressing Enter or Return on your keyboard.

Viewing NetBios Information

The NetBIOS utility allows you to view information about speciﬁc NetBIOS MAC addresses for which the TSX-1620 has forwarding and/or ﬁltering information. Such information is used by the transparent bridging function when determining how to propagate a received frame. The NetBIOS Conﬁguration window displays each detected NetBIOS MAC address and its corresponding name, port, and RIF ﬁeld. To display the NetBIOS Conﬁguration window:

1. Click on the module index or module type to display the Module menu (see

Figure 2-3 on page 2-5).

2. Drag down to Module Utilities, then right to Net Bios, and release.

Using the TSX-1620 Hub View

Figure 2-12. The NetBIOS Conﬁguration Window

Each NetBIOS MAC address for which the TSX-1620 has forwarding and/or ﬁltering information is displayed in the list at the top of the window. This window will only display information about a MAC address after the device has received a frame from that address. When you highlight an entry in the list, its corresponding information is displayed in the ﬁelds beneath the list.

Managing the Device 2-23

Using the TSX-1620 Hub View

The NetBIOS Conﬁguration window offers the following information about each NetBIOS MAC address:

Name

The NetBIOS name corresponding to the MAC address from which the TSX-1620 has received a frame.

Address

The NetBIOS MAC address from which the TSX-1620 has received trafﬁc.

Port

The port number on which a frame from its associated NetBIOS MAC address has been received.

RIF

The routing information ﬁeld (RIF) of the frame which has been received from the associated NetBIOS MAC address.

Viewing and Changing System Information

The System Information utility allows you to view the TSX-1620’s ﬁrmware revision, view and change the system date and time, and enable or disable the daylight savings time setting which affects the system date and time. To invoke the System Information window:

1. Click on the module index or module type to display the Module menu (see

Figure 2-3 on page 2-5).

2. Drag down to Module Utilities, then right to System Information, and release.

Figure 2-13. The System Information Window

2-24 Managing the Device

The Software Revision ﬁeld displays the device’s current revision of ﬁrmware. If you have an expansion module installed, this ﬁeld will display the ﬁrmware revision for each module, separated by ﬁve ASCII spaces. The expansion module’s ﬁrmware revision will be displayed last.

The Date and Time ﬁelds display the current system date and time. These ﬁelds may be edited. The Daylight Savings ﬁeld shows the current daylight savings mode, and allow you to enable or disable the daylight savings setting.

Setting the Device Date, Time, and Daylight Savings Mode

To alter the TSX-1620’s system date and time, and enable or disable the daylight savings mode:

1. Highlight the contents of the Date ﬁeld, type the desired system date in

MM/DD/YY format, and press Enter or Return on your keyboard.

2. Highlight the contents of the Time ﬁeld, type the desired system time in

HH:MM:SS format, and press Enter or Return on your keyboard.

3. To enable or disable daylight savings mode, click on the Enable or Disable

option in the Daylight Savings ﬁeld. When daylight savings mode is enabled, the system time will automatically be adjusted when daylight savings or standard time is in effect.

Using the TSX-1620 Hub View

Conﬁguring Port Security

The Port Security utility allows you to automatically enable or disable to any of the TSX-1620’s ports during speciﬁed days of the week and/or during speciﬁed times of the day. The main Port Security window displays security settings according to parameters speciﬁed in the Conﬁgure View window. The Conﬁgure Restrictions window allows you to restrict access to a port or a range of ports during a speciﬁed date and time or range of dates and times. To launch the Port Security utility:

1. Click on the module index or module type to display the Module menu (see

Figure 2-3 on page 2-5).

2. Drag down to Module Utilities, then right to Port Security, and release.

Managing the Device 2-25

Using the TSX-1620 Hub View

Figure 2-14. The Main Port Security Window

The Port Security window will not list any security restrictions until you specify the parameters that you wish to view. These parameters are speciﬁed using the Conﬁgure View window, which is launched from the Port Security window.

When you click on the Update button, the TSX-1620 will be queried for its port security conﬁguration (according to the view parameters speciﬁed in the Conﬁgure View window), and any changes that have occurred since the window was opened (or since the Update button was last clicked) will be reﬂected in the main Port Security window.

Viewing Your Port Security Settings

To display the Conﬁgure View window:

1. Click on at the bottom of the Port Security window . The Conﬁgure View window will appear.

2-26 Managing the Device

Using the TSX-1620 Hub View

Figure 2-15. The Conﬁgure View Window

The Viewing Sort Priority buttons at the top of this window allow you to change the order in which your security information is displayed in the Port Security window. Each button allows you to choose from among Day, Port, Hour, and Status. To change the Viewing Sort Priority:

1. Click on the First, Second, Third, and/or Fourth buttons to display the

selection menu. Drag down to the par ameter (Day, Port, Hour, or Status) that you wish to be displayed in the corresponding order in the Port Security window, and release. The selected parameter will appear in the button, and the parameter column order will change in the Port Security window.

Using the Viewing Selection Criteria lists in the Conﬁgure View window, you can choose the information to be displayed in the Port Security window. You can choose to view all security conﬁgurations for a selected day of the week, for a certain hour of the day, for a certain port, and/or for enabled or disabled ports. You may also choose to display security information for a range of days, hours, and/or ports, as well as for both enabled and disabled ports. It is not necessary to choose from among selection criteria:

1. In the Day selection list, select one or more days of the week for which you

wish to view your security conﬁguration.

all

possible selection criteria. To conﬁgure your viewing

2. In the Port selection list, select one or more of the TSX-1620’s ports for which

you wish to view your security conﬁguration.

Managing the Device 2-27

Using the TSX-1620 Hub View

3. In the Hour selection list, select one or more hours of the day for which you wish to view your security conﬁguration. Hour number 0 represents 12:00 am.

4. In the Status selection list, select one or both status conditions (Enable or Disable) for which you wish to view your security conﬁguration.

5. Clic k on . All port security information matching the selected criteria will be displayed in the Port Security window.

Clicking on the Clear button will deselect any selections you have made in the Conﬁgure View window.

Conﬁguring Your Port Security Settings

The Conﬁgure Restrictions window allows you to conﬁgure your TSX-1620’s port security settings. Using this window, you can automatically enable or disable to any of the TSX-1620’s ports during speciﬁed days of the week and/or during speciﬁed times of the day. To display the Conﬁgure Restrictions window:

1. Click on at the bottom of the Port Security window. The Conﬁgure Restrictions window will appear.

Figure 2-16. The Conﬁgure Restrictions Window

To conﬁgure the TSX-1620’s port security settings:

1. In the Day selection list, select one or more days of the week for which you wish to enable or disable one or more TSX-1620 ports.

2. In the Port selection list, select one or more of the TSX-1620’s ports that you wish to enable or disable during the speciﬁed time period(s).

2-28 Managing the Device

3. In the Hour selection list, select one or more hours of the day for which you

wish to enable or disable one or more TSX-1620 ports. Hour number 0 represents 12:00 am.

4. In the Status selection list, select Enable to enab le the speciﬁed port or ports

during the speciﬁed time period(s). Select Disable to disable the speciﬁed port or ports during the speciﬁed time period(s).

5. Clic k on . Your TSX-1620 port security settings will be applied to the

device, and the speciﬁed restrictions will be enacted during the appropriate time period(s).

Clicking on the Clear button will deselect any selections you have made in the Conﬁgure Restrictions window.

Viewing the Interface List

The Interface List option in the Interface menu displays a list of each of the TSX1620’s interface (port) numbers and their associated MAC addresses. Remember, to use the Interface menu, the TSX-1620 application display must be in the Interface mode. To display the Interface List window from the Hub View:

Using the TSX-1620 Hub View

1. Click in the Port Display Form text box to display the Interface menu (refer to

Figure 2-3).

2. Drag down to Interface List, and release.

Figure 2-17. The Interface List Window

Managing the Device 2-29

Using the TSX-1620 Hub View

The Interface List window can display about a dozen interfaces at once; use the scroll bar to the right of the list to view additional interfaces, if necessary.

Accessing the MIB I, II Tool

You can access the MIB I, II Tool directly from the Hub View. You can view MIB II statistics for your TSX-1620 via this window.

1. Clic k in the appropriate area to display the Interf ace menu (ref er to Figure 2-3, on page page 2-5).

2. Dr ag down to MIB II and release . The SNMP MIB2 System Group window will appear. For more information on the MIB I, II tool, see Chapter 2, Using the MIB I, MIB II Tool in the

You must be viewing the Interface application display mode in order to have access to the

NOTE

Interface menu and this option.

SPMA T ools Guide

Accessing Bridge Management

You can access the Bridge View and associated bridge applications from the Bridge menu in the Hub View.

1. Click in the appropriate area to display the Bridge menu (refer to Figure 2-3, on page page 2-5).

2. Drag down to Bridge Mgmt and release. The Bridge View will be displayed. For more information on the Bridge View and the bridge applications, see Chapter 3, Using the TSX-1620 Bridge View.

You must be viewing the Bridge application display mode in order to have access to the

NOTE

Bridge menu and this option.

Performing Source Routing Conﬁguration for a Port

The TSX-1620 also provides virtual networking capability, allowing you to conﬁgure logical rings that include multiple physical rings attached to the front panel ports (e.g., physical rings inserted in ports 1, 2, 5, and 8 could all be assigned to a single virtual ring network, and would communicate as if they actually were on the same physical ring). These logical rings are achieved by assigning the same local segment value to each port that you wish to include in

2-30 Managing the Device

the logical ring. The local segment value can be assigned using the Source Routing Conﬁguration window, available from the Bridge Port menus in the Hub View and the Bridge View. To access the Source Routing Conﬁguration window from the Hub View:

1. Click button 3 on the Port Index or Port Status box of the desired port to

display the Bridge Port menu.

2. Drag down to SR Conﬁguration, and release. The Source Routing

Conﬁguration window will appear. For more information on the Source Routing Conﬁguration window and other bridge applications, see Chapter 3, Using the TSX-1620 Bridge View.

You must be viewing the Bridge application display mode in order to have access to the

NOTE

Bridge Port menu and this option.

Viewing a Bridge Port’s Source Address List

Using the TSX-1620 Hub View

You can use the Source Address option from the Bridge Port menu to view a bridge port’s source address list. The list in the Source Address window displays a MAC Address for each device communicating through a speciﬁc bridge port. Remember, to use the Bridge Port menu, the TSX-1620 application display must be in the Bridge mode. To invoke a bridge port’s Source Address window from the Hub View:

1. Click button 3 on the Port Index or Port Status box of the desired port to

display the Bridge Port menu.

2. Drag down to Source Address, and release.

Managing the Device 2-31

Using the TSX-1620 Hub View

Figure 2-18. The Bridge Port Source Address Window

The Interface ﬁeld at the top of the window displays the interface number of the selected port.

The Bridge Port Source Address window displays addresses of all devices that have transmitted packets that were detected by the selected bridge port within a time period less than the Filtering Database’s deﬁned ageing time (addresses that have not transmitted a packet during one complete cycle of the ageing timer will be purged). The Filtering Database’s ageing timer is user-conﬁgurable; see Chapter 3, Using the TSX-1620 Bridge View, for details. The Bridge Port Source Address window can display about ten addresses at once; use the scroll bar to the right of the list to view additional addresses, if necessary.

Enabling/Disabling Bridging for TSX-1620 Ports

You can enable or disable bridging for individual TSX-1620 ports using the Bridge Port menus.

Enabling and Disabling Bridge Ports

When you disable a bridge port, you disconnect that port’s network from the bridge entirely. The port does not forward any packets, nor does it participate in Spanning Tree operations. Nodes connected to the network can still communicate with each other, but they can’t communicate with the bridge or with other networks connected to the TSX-1620. When you enable a port, the port moves from the Disabled state through the Learning and Listening states to the Forwarding state; bridge port state color codes will change accordingly.

2-32 Managing the Device

NOTE

Using the TSX-1620 Hub View

You can enable and disable bridging for the TSX-1620’s ports from each port’s Bridge Port menu. Remember, to use the Bridge Port menu, the TSX-1620 application display must be in the Bridge mode.

To enable or disable an bridging across an individual port:

1. Click button 3 on the Port Index or Port Status box to display the Bridge Port

menu.

2. Drag down to Enable or Disable, as appropriate, and release.

For more information about bridging functions and how to determine the current state of each bridge port, see Chapter 3, Using the TSX-1620 Bridge View.

Managing the Device 2-33

Using the TSX-1620 Hub View

2-34 Managing the Device

Chapter 3

Using the TSX-1620 Bridge View

A brief explanation of bridging methods; a tour of the Bridge Trafﬁc View; using the Detail View; monitoring bridge operation; using the Filtering Database; conﬁguring bridge operating parameters; setting forwarding thresholds and notiﬁcation options; setting polling parameters; enabling and disabling bridges

The SPECTRUM Portable Management Application (SPMA) Bridge View presents a series of windows that describe the TSX-1620 bridge and its bridge interfaces. The Bridge View is available for devices that support the dot1dBridge MIB. You can monitor bridge activity and performance and manage bridge conﬁguration for both Transparent and Source Routing bridging through the Bridge Trafﬁc View and other related windows. The SPMA bridge application provides separate windows for conﬁguring Source Route and Transparent bridging.

Bridging Basics

Bridges are used in local area networks to connect two or more network segments and to control the ﬂow of packets between the segments. Ideally, bridges forward packets to another network segment only when necessary. Bridges are also used to increase the fault tolerance in a local area network by creating redundant bridge paths between network segments. This is so that in the event of a bridge or bridge segment failure, an alternate bridge path will be available to network trafﬁc, without signiﬁcant interruption to its ﬂow.

The method a bridge uses to forward packets, choose a bridge path, and ensure that a sending station’s messages take only one bridge path depends on the bridge’s type: Transparent or Source Routing. A third type of bridge — a Source Route Transparent (SRT) bridge —has both Source Routing and Transparent bridging capabilities.

3-1

Using the TSX-1620 Bridge View

Transparent Bridging

Transparent bridges are most common in Ethernet networks. Individual Transparent bridges monitor packet trafﬁc on attached network segments to learn their network segment location in terms of which bridge port receives packets originated from a particular station (determined via the packet’s Source Address ﬁeld). This information gets stored in the bridge’s Filtering Database. When in the Forwarding state, the bridge compares a packet’s destination address to the information in the Filtering Database to determine if the packet should be forwarded to another network segment or ﬁltered (i.e., not forwarded). A bridge ﬁlters a packet if it determines that the packet’s destination address exists on the same side of the bridge as the source address.

Transparent bridges in a network communicate with one another by exchanging Bridge Protocol Data Units, or BPDUs, and collectively implement a Spanning Tree Algorithm (STA) to determine the network topology, to ensure that only a single data route exists between any two end stations, and to ensure that the topology information remains current.

Source Route Bridging

Source Routing is typically used to connect two or more Token Ring network segments. Source Route bridges differ from Transparent bridges in that they do not build and then use a physical address database to make forwarding decisions. Instead, Source Route bridges read routing information included by the source station and added by other bridges in a packet’s header to determine where to forward the packet.

In Source Routing, sending and receiving devices employ broadcast packets — otherwise known as explorer packets — to determine the most efﬁcient route for a message to travel. Generally, before a station sends a message, it will ﬁrst send a test packet to all stations on the same ring; if the sending station receives a response to this packet, it knows that it does not need to include routing information in the Routing Information Field (RIF) of this packet and all subsequent packets it sends to the same station (i.e., the packets are not source routed and will appear as transparent-style packets). If the sending station does not receive a response to the test packet, it will send an explorer packet to the destination; the explorer packet will be propagated by the network’s bridges as either All Paths Explorer (APE) packets or as one Spanning Tree Explorer (STE) packet. The task of both packet types is to get the destination station to return speciﬁc route information to the sending station.

APE packets are sent to the destination station over every possible bridge path when multiple bridge paths are available between any two local area network stations. (Because of the method used by bridges to forward SR packets, the presence of data loops in a network is not an issue for SR packets as it is for packets that must be Transparently bridged.) The original APE frame contains no routing information (e.g., bridge numbers and ring numbers); it is propagated along all available paths to the destination station. Each bridge along the way adds its own bridge and ring numbers to the packet’s RIF before forwarding it,

3-2 Bridging Basics

thereby providing route information. The destination station directs replies to each APE packet to the sending station, which, ideally, considers the route traveled by the ﬁrst reply received to be the most efﬁcient route. The sending station then stores the route information and uses it to send subsequent transmissions to the same station.

Alternatively, a sending station may send an STE frame. On receipt of an STE packet, a bridge can use the single bridge path as determined by the Spanning Tree Algorithm to forward one Spanning Tree Explorer (STE) frame instead of APE frames. In response to an STE packet, the destination station sends out one APE packet, which returns to the sending station information on all possible bridge paths. An STE packet is the only type of Source Route packet whose route is determined by the Spanning Tree Algorithm. Although the Spanning Tree Algorithm determines the bridge path an STE takes to the destination station, the bridge still uses Source Routing to forward the packet (i.e., for speciﬁcally-routed frames, the bridge will read and add information to the Routing Information Field in the packet’s header).

Source Route Transparent Bridges

Using the TSX-1620 Bridge View

A Source Route Transparent (SRT) bridge—otherwise known as a translational bridge—functions as both a Source Route bridge and a Transparent bridge, providing all the functionality of both bridging types. Only one method, however, is used to forward any single packet.

On receipt of a packet, an SRT bridge will read a packet header’s routing information indicator (RII) bit to determine how to forward the packet. An RII set to 1 indicates that a Routing Information Field (RIF) is present in the packet; the bridge implements Source Routing accordingly. An RII value of 0 indicates that no RIF is present in the packet; in this case, the bridge will forward the packet using Transparent bridging. A translational bridge builds its Filtering Database from information it obtains from both source routed and transparently bridged packets.

Accessing the Bridge Trafﬁc View Window

There are three ways to open the Bridge View: if you are working within a network management system, you can select the Bridge View option from the icon menu; speciﬁc directions for creating a TSX-1620 icon and accessing the icon menu can be found in the appropriate Installing and Using SPECTRUM for... guide. If you are working within the TSX-1620 Hub View, you can select the Bridge Mgmt option from the Bridge menu. If you are running in a stand-alone mode, type the following at the command line:

spmarun bridge <IP address> <community name>

Accessing the Bridge Trafﬁc View Window 3-3

Using the TSX-1620 Bridge View

The spmarun script invoked ﬁrst in the above command temporarily sets the environment

NOTES

If there is a hostname mapped to your bridging device’s IP address, you can use <hostname> in place of <IP address> to launch the Bridge View. Please note, however, that the hostname is not the same as the device name which can be assigned via Local Management and/or SPMA; you cannot use the device name in place of the IP address.

The community name you use to start the Bridge application must have at least Read access; for full management functionality, you should use a community name that provides Read/Write or Superuser access. For more information on community names, see Deﬁning Community Names in Chapter 2, Using the TSX-1620 Hub View, the appropriate Installing and Using SPECTRUM for... guide, and/or the Community Names chapter in the SPMA Tools Guide.

The Bridge Trafﬁc View is the heart of the Bridge application. The ﬁrst window to appear when you start the Bridge application, it contains a status display of the device’s bridge interfaces and contains the buttons and menus that provide access to all bridge monitoring and management functions.

Navigating Through the Bridge Trafﬁc View

Within the Bridge Trafﬁc View, you can click mouse buttons in different areas of the window to initiate management tasks. The following diagram shows you how to display the Bridge Trafﬁc View Device and Port menus.

3-4 Accessing the Bridge Trafﬁc View Window

Using the TSX-1620 Bridge View

Each box represents a bridge interface. Click button 3 anywhere within a Bridge Port box to display the Port menu. Click button 1 on a bridge interface to select it for display in the Detail View (at least two must be selected to activate the Detail View button).

Figure 3-1. Mousing Around the Bridge Trafﬁc View

To display the Device menu:

1. Click on in the Bridge Trafﬁc View front panel.

To display a Port menu:

1. Click mouse button 3 in a Bridge Port box.

Click on the Device button to display the Device menu

The Front Panel shows device-level summary information.

Accessing the Bridge Trafﬁc View Window 3-5

Using the TSX-1620 Bridge View

Bridge Trafﬁc View Front Panel

The right side of the Bridge Trafﬁc View displays device summary information:

Contact Status

Contact Status is a color code that shows the status of the connection between SPMA and the device:

• Green means a valid connection.

• Blue means that SPMA is trying to reach the device but doesn’t yet know if the connection will be successful.

• Red means that SPMA has lost contact with the device.

Uptime

The time that the device has been running without interruption. The counter resets to 0 days 00:00:00 (X days HH:MM:SS) when one of the following occurs:

• Power to the device is cycled.

• The device is reset manually.

NOTE

Time and Date

The date and time are taken from the device’s internal 24-hour clock, which you can set in the Bridge Status window; see The Bridge Status Window, page 3-12.

Device Name

This ﬁeld displays the name you’ve assigned to this device in the Bridge Status window; see The Bridge Status Window, page 3-12.

Device Location

This ﬁeld displays the location you’ve assigned to this device in the Bridge Status window; see The Bridge Status Window, page 3-12.

If you have assigned a device name or location that contains more than 18 characters, only the ﬁrst 18 will be displayed in the Bridge Trafﬁc View. Check the Device Status window for the complete name and/or location, if necessary.

IP Address

The device’s Internet Protocol address. You cannot change the IP address from SPMA. For multi-interface devices, this will be the IP used to deﬁne the device icon (if you are using a management platform) or the IP used to launch the application (if you are running in stand-alone mode).

MAC Address

The device’s factory-set MAC hardware address.

3-6 Accessing the Bridge Trafﬁc View Window

Using the TSX-1620 Bridge View

Clicking on the Device button displays the Device menu. The Device menu lets you perform the following:

• Open the Bridge Status window.

• Display a summary of bridge statistics.

• Open the Source Routing Conﬁguration window.

• Open the Filtering Database window.

• Open the Find MAC Address window.

• Open the Spanning Tree Protocol window.

• Open the Polling Intervals window.

If you need to call Cabletron’s Technical Support about a problem with the Bridge View, you’ll need the information provided in the Information window:

Figure 3-2. Bridge Information Window

Clicking mouse button 1 on the Bridge Trafﬁc View Quit button closes all Bridge View windows.

The Bridge Port Display

Each Bridge Port box in the Bridge Trafﬁc View displays information about its corresponding bridge interface.

System Description

SPMA Bridge View version

Accessing the Bridge Trafﬁc View Window 3-7

Using the TSX-1620 Bridge View

The number of bridge interfaces appearing in the Bridge Trafﬁc View depends on the

NOTE

number of different local segment numbers assigned to the TSX-1620’s physical ports. For example, if all of the TSX-1620’s physical ports have the same local segment identiﬁer, the Bridge Trafﬁc View will display a single bridge interface (port). If physical ports 1-5 are assigned the same local segment identiﬁer, and ports 6-16 are assigned another local segment identiﬁer, the Bridge Trafﬁc View will display two bridge interfaces, and so on. A port’s local segment identiﬁer is assigned using the Source Routing Conﬁguration window. See The Source Routing Conﬁguration Window on page 3-29 for details.

The Bridge Port boxes are color-coded, reﬂecting their current status. Bridge Port boxes for disabled bridge ports are colored blue. Enabled bridge ports are colored green, yellow, or red, depending on the range in which the trafﬁc volume through that interface falls. See Conﬁguring Forwarding Thresholds, page 3-34, for complete instructions on assigning trafﬁc ranges and their corresponding Bridge Port box colors.

Bridge Port box ﬁelds are as follows:

Port #

The index number assigned to the bridge interface.

Type

The bridge port’s physical interface type (e.g. ethernet-csmacd, fddi, ppp, token ring, etc.).

MAC

The MAC address of the TSX-1620 port associated with the bridge interface.

For the TSX-1620, the MAC address displayed for each bridge interface will be that of the

NOTE

ﬁrst detected physical port assigned to each interface (e.g., if physical ports 6-16 are assigned to the same bridge interface, the MAC address displayed for that bridge interface will be that of port 6). The MAC address displayed for bridge interface 1 will always be that of port 1.

The remaining information displayed in the Bridge Port boxes depends on selections made using the buttons located at the bottom of the Bridge Trafﬁc View. See the next section, Choosing Bridge Trafﬁc Information: Bridge Trafﬁc View

Buttons, for instructions on using these buttons.

Choosing Bridge Trafﬁc Information: Bridge Trafﬁc View Buttons

The four buttons at the bottom of the Bridge Trafﬁc View control the type of information that appears in some of the Bridge Port box ﬁelds. (The Port number, Type, and MAC address ﬁelds are not affected by any of these buttons.)

3-8 Accessing the Bridge Trafﬁc View Window

Using the TSX-1620 Bridge View

The Frames/Admin, Source Routing/Transparent, and Delta/Percentage buttons each let you choose one of the two display modes for the Bridge Port boxes. The display mode visible on a button is the one not currently selected. Clicking on a button when the button displays the desired mode type chooses that mode type for the Bridge Port boxes. For example, the Frames/Admin button will display Frames when the Admin display mode is in effect and Admin when the Frames display mode is in effect.

The Frames/Admin button allows you to change the information displayed in the Bridge Port boxes between trafﬁc statistics (when Frames is selected) and port state/status (when Admin is selected).

The Frames display mode shows the following Bridge Port information:

• Frms In—Displays the total number of frames, including BPDU frames,

received at this bridge port from its attached network segment during the last polling interval.

• Frms Out—Displays the total number of frames, including BPDU frames,

transmitted or forwarded through this port to its attached network segment during the last polling interval.

• Forwarded—Displays frames forwarded by this bridge port to another bridge

port on the device during the last polling interval. You can change this display using the Delta/Percentage button (described in this section). When Delta is selected, this ﬁeld displays the total number of frames forwarded by this bridge port to another port on the bridge during the last polling interval. When Percentage is selected, this ﬁeld displays the percentage of all frames received by the port from its network segment that were forwarded to another port on the bridge during the last polling interval.

When the Admin option is selected, the Bridge Port boxes display port Status — whether the port is enabled or disabled — and port State.

Enabled The port is able to participate in bridging and the

Spanning Tree Algorithm.

Disabled The port cannot participate in bridging or Spanning Tree

operations.

Enabling and disabling a port changes its Port Status, not its Port State.

A port’s State indicates whether or not the port is forwarding packets and participating in the exchange of BPDUs. The Spanning Tree Algorithm determines the state of each port in order to maintain an active topology with no data loops. As a port moves from the blocking to the forwarding state, it will remain in each state for the duration of the Forward Delay in order to prevent data loops while the active topology is changing. Possible port states are as follows:

Disabled The port has been disabled by management; it cannot

receive or forward trafﬁc, and is not participating in the exchange of BPDUs.

Accessing the Bridge Trafﬁc View Window 3-9

Using the TSX-1620 Bridge View

Blocking This port is not forwarding or receiving trafﬁc (and

Listening This state is entered from the blocking state when the

Learning The port is processing BPDUs, but is not yet relaying

Forwarding A port enters this state from the Learning state. The port

therefore no physical address information is added to the Filtering Database) nor is it sending or receiving BPDUs. A port will enter the blocking state for two reasons: if it receives information that another bridge is the designated bridge to the network segment to which this port is attached, or immediately after it has been enabled by management.

STA determines that this port should participate in frame relay. The port is processing BPDUs, but is not yet forwarding or receiving trafﬁc or adding information to the Filtering Database.

packets. The port is adding address information to the Filtering Database.

is relaying frames and processing BPDUs. A port in this state can enter the Disabled state by management.

Broken If the port is malfunctioning, this value will display in

the State ﬁeld.

On the TSX-1620, you can use this button to change the Bridge Port display between Source Routing and Transparent bridging frame information. The title bar at the top of the Bridge Port display area indicates the frame type described in the bridge ports.

This two-state button is active when you have bridge statistics displayed in the Bridge Port boxes (i.e., when Frames is selected); otherwise, it is grayed. When you click on Delta, the Forward field in the Bridge Port boxes displays the total number of frames forwarded by this bridge port to another port on the bridge during the last polling interval. When you click on Percentage, the Forward field in the Bridge Port boxes displays the percentage of all frames received by the port from its network segment that were also forwarded to another port on the bridge during the last polling interval.

The Detail View button lets you take a closer look at trafﬁc between two bridge ports. The Detail View button is grayed unless you have two bridge ports selected. For complete instructions on how to use the Detail View, see the next section.

3-10 Accessing the Bridge Trafﬁc View Window

Using the Detail View Window

The Detail View provides port-level information on two bridge ports.

For the TSX-1620, the Detail View can only be used if you have only two bridge ports

NOTE

conﬁgured (i.e., if you have more than two different local segment numbers assigned among all of your physical ports). If three or more bridge ports have been conﬁgured, you will be unable to select any bridge ports to view in the Detail View.

To open the Detail View:

1. In the Bridge Trafﬁc View, select two bridge ports by clicking mouse button 1

on both ports; the selected Port boxes will be outlined, and the top part of each selected box will be grayed. The Detail View button becomes active once you select both bridge ports.

2. Click on the Detail View button. The Detail View window appears.

Using the TSX-1620 Bridge View

Figure 3-3. Detail View Showing Two Ports

Using the Detail View Window 3-11

Using the TSX-1620 Bridge View

Each port shows the total frames transmitted and received by the port.

Port summary information includes Port Index (at the top of the Bridge Port box), Port Status, Bridge Port State, and Frames Forwarded. You can display Frames Forwarded as a delta value (the total number of frames forwarded by this bridge port to any other port on the bridge during the last polling interval) or as a percentage value (showing the percentage of all frames received b y the port from its attached network segment during the last polling interval that were forwarded to another port on the bridge) by clicking the Delta/Percentage button at the bottom of the window (see Figure 3-3).

Each corner of the bridge port summarizes activity to another bridge port. You can display Forwarded To as a delta value (the total number of frames forwarded by this bridge port to the specified port on the bridge during the last polling interval) or as a percentage value (showing the percentage of all frames received by the port during the last polling interval that were forwarded to the speciﬁed port on the bridge) by clicking the Delta/Percentage button at the bottom of the window (see Figure 3-3).

Figure 3-4. Port Boxes in the Detail View

The diagram in Figure 3-4 explains the Detail View bridge port information.

The Bridge Status Window

You can set or change the device name or location— which display in the Bridge Trafﬁc View Front Panel—in the Bridge Status window.

The Contact ﬁeld is the only Bridge Status window ﬁeld not displayed in the Bridge Trafﬁc View Front Panel. Use the Contact box to record the name and phone number of the person responsible for the device.

To set or change information for any of the Bridge Status window ﬁelds:

1. Display the Device menu by clicking on the Front Panel button.

2. In the Device menu, drag down to Status and release.

3-12 The Bridge Status Window

Using the TSX-1620 Bridge View

3. In the Status window, highlight a text box, type in the new information; press

Enter or Return on the keyboard to set your changes before selecting a new ﬁeld.

Figure 3-5. Bridge Status Window

Although Date and Time ﬁelds are present in the TSX-1620’s Bridge Status window,

NOTE

these values are not supported for the TSX-1620. Any attempt to set a device date or time using this window will result in an error message.

The Bridge Statistics Window

The Bridge Statistics window displays generic information about all ports associated with the device.

To open the Bridge Statistics window:

1. In the Bridge Trafﬁc View window, click on to display the Device

menu.

2. Drag down to Bridge Statistics and release. The Bridge Statistics window

appears.

The Bridge Statistics Window 3-13

Using the TSX-1620 Bridge View

The Bridge Statistics window displays the following information:

Figure 3-6. Bridge Statistics Window

Bridging Type

Type refers to the type of bridging supported by the bridge.

• unknown

• transparent-only

• sourceroute-only

• srt (Source Route Transparent)

Total Ports

Shows the total number of bridge ports supported by this device.

Port

Displays each port’s index number.

IfIndex

Interface index; a unique value for each network (interface) to which this port connects. Only a WAN port will connect to more than one interface simultaneously.

PortCircuit

When dealing with X.25 virtual circuits, it’s possible for two Port Indexes to have the same IfIndex. In such a case, Port Circuit contains the value of a MIB object instance unique to the port; otherwise, Port Circuit is equal to 0.0. For example, if Port 1 maps to IfIndex 1 and Port 2 maps to Iﬁndex 1, then the Port Circuits are 1.1 and 1.2 respectively.

DelayExceedDiscard

The number of frames a port has discarded due to an excessive transit time through the bridge.

3-14 The Bridge Statistics Window

MtuExceedDiscard

Mtu stands for “maximum transfer unit”; it is the largest frame size that can be processed by the TSX-1620. A port discards any received frames that are larger than the Mtu; this ﬁeld lists how many such frames were discarded.

The information in the Bridge Statistics window is a snapshot of the data. When you open the Bridge Statistics window, the application polls the devices for information. Devices are not polled again until you click mouse button 1 on the Update button, or close, then re-open the Statistics window.

When a device is reset, statistics windows and/or statistics displays in the Bridge View

NOTE

windows may display very large numbers for one polling interval. This is due to the resetting of counters.

The Filtering Database Window

Using the TSX-1620 Bridge View

In Transparent bridging, each bridge port uses the device’s Filtering Database to determine a packet’s route through the bridge. The Filtering Database is created from permanent entries made via management, and from entries learned as the bridge collects and stores the source address and port association from each packet it receives.

When in the Forwarding state, the bridge examines each received packet and compares the destination address to the contents of the Filtering Database. If the destination address is located on the network from which the packet was received, the bridge ﬁlters (does not forward) the packet. If the destination address is located on a different network, the bridge forwards the packet to the appropriate network. If the destination address isn’t found in the Filtering Database, the bridge forwards the packet to all networks. To keep Filtering Database entries current, older entries are purged after a period of time, which is called the Dynamic Ageing Time.

The Filtering Database has two types of entries: Forwarding and Static. The Forwarding view of the Filtering Database contain addresses that the bridge learns from network trafﬁc (also known as dynamic entries) as well as all the static entries. Learned entries are subject to the bridge’s Dynamic Ageing Timer; entries that aren’t accessed within the time speciﬁed by the ageing timer are purged. Static entries may be subject to the ageing timer, depending on how the entries were added. Static entries enter the Filtering Database in two ways: either automatically, when permanent database entries are copied to the Filtering Database, or manually when you move a Forwarding entry to the Static Table.

The Filtering Database Window 3-15

Using the TSX-1620 Bridge View

Cabletron has extended the functionality of the Ethernet port on translational bridges, so

NOTES

the port can be set to Source Route mode.

When an Ethernet port is in Source Route mode, on receipt of an SR packet from the Token Ring port, it will save the Source Routing information and send out the packet transparently. When the response comes back, the source routing information will be restored and sent to the Token Ring port.

Viewing the Filtering Database

To open the Filtering Database window:

1. Display the Device menu by clicking on the Front Panel button.

2. Drag down to Filtering Database, and release.

3. At the top of the Filtering Database window, click mouse button 1 on the appropriate selection box to view either the Forwarding or Static database.

Click mouse button 1 on the type of entry you want to display, either

Forwarding

Static.

Figure 3-7. Filtering Database Window

3-16 The Filtering Database Window

Using the TSX-1620 Bridge View

Two ﬁelds at the top of the Filtering Database window provide information about the Filtering Database:

Ageing Time (secs)

The current setting of the bridge’s Dynamic Ageing Timer, used to purge Forwarding entries from the Filtering Database, or to purge static entries subject to the ageing timer.

Learned Entry Discards

The number of database entries that never made it into the Filtering Database due to a lack of buffer space. Ideally, this number should be 0. If this number grows, it indicates a very busy network. A value other than 0 is acceptable as long as it isn’t increasing, indicating that the lack of buffer space is sometimes causing problems, but that the condition is not persistent.

For each entry in the Forwarding database, the window displays the following:

Source Address

Displays the MAC addresses of devices that have transmitted frames to the bridge.

Port

Identiﬁes the bridge port where frames from the noted source address are received. A value of 0 indicates that the address exists within the Filtering Database, but the database has not yet learned the corresponding port number.

Status

Indicates how the entry got into the database:

• learned—The address was copied into the database from the source address

ﬁeld of a received frame.

• self—Identiﬁes one of the bridge ports.

• management—Indicates an entry that was entered into the database manually.

The status ﬁeld of all static entries in the Forwarding Table will display management.

• invalid—The entry is a learned entry that has aged out, but has not yet been

ﬂushed from the table.

• other—The bridge is unable to determine the entry’s status.

The information displayed for the Static database is somewhat different; for each entry, the window displays the following:

Source Address

Displays the MAC addresses of devices that have transmitted frames to the bridge.

The Filtering Database Window 3-17

Using the TSX-1620 Bridge View

Receive Port

Displays the port on which a packet with the speciﬁed source address must be received in order for the ﬁltering actions speciﬁed in the Destination Port ﬁeld to take place. A setting of 0 will apply the ﬁltering action anytime a packet with the speciﬁed source address is received by any of the bridge ports.

Destination Port

Displays the port or ports to which frames that have the speciﬁed source address and were received on the speciﬁed port or ports will be forwarded. Note that packets with the speciﬁed source address received on the speciﬁed port or ports will be blocked from any ports not listed in this ﬁeld.

If the number of Destination Ports exceeds what the Destination Ports column is able to display, Destination Ports for that ﬁlter appear as a hex string that maps to actual port numbers.

For example, a Destination Port entry of B54180E0 represents ports 1, 3, 4, 6, 8, 10, 16, 17, 25, 26, and 27. Here’s how to translate the hex string to port numbers:

1. Translate each hex integer into a four-digit binary value: B54180E 0

1011 0101 0100 0001 1000 0000 1110 0000

2. Each “1” in the binary bitmask represents a Destination Port number: B54180E 0

1011 0101 0100 0001 1000 0000 1110 0000 1,X,3,4 X,6,X,8 X,10,X,X X,X,X,16 17,X,X,X X,X,X,X 25,26,27,X X,X,X,X

Status

Indicates the assigned permanence of the entry:

• permanent—The entry won’t be aged out or deleted on reset.

• deleteOnReset—The entry will be deleted when the bridge is reset.

• deleteOnTimeout—The entry is subject to the ageing timer.

The buttons at the bottom of the window provide the following functions:

The Delete button is only available when the Filtering Database window is showing Static entries and one entry in the list is selected. Use the Delete button to remove an entry from the Static Table; see Deleting a Static Table Entry,

page 3-22.

The Change button is only available when the Filtering Database window is showing Static entries and one entry in the list is selected. Use the Change button to change the selected port’s receive port/destination ports settings; see Changing Forwarding and Static Database Entries, page 3-20.

3-18 The Filtering Database Window

Using the TSX-1620 Bridge View

Since the Forwarding table cannot be edited, you must add an entry to the Static Table in order to change or delete it, as desired. Use the Add to Static Table to add a forwarding entry to the static database.

The Ageing Time determines how long a Forwarding entry (or a Static entry with deleteOnTimeout status) is retained before being discarded due to inactivity. Use the Change Ageing Time button to set a new Ageing Time; see the following section for details.

Use the Find button to search the Filtering Database for a speciﬁc MAC address; see Finding a Filtering Database MAC Address, page 3-22.

The Filtering Database window shows a snapshot of the database. Clicking mouse button 1 on the Update button displays the current database.

Changing the Filtering Database Dynamic Ageing Time

The Dynamic Ageing Time determines how long an entry remains in the Filtering Database before being purged due to inactivity. Purging older entries ensures that the Filtering Database is always using current information to make ﬁlter/forward decisions.

During a topology change, the Forward Delay is used as the Filtering Database Ageing

NOTE

Time, which ensures that the Filtering Database will contain current topology information.

To change the Dynamic Ageing Time:

1. In the Filtering Database window, click mouse button 1 on the Change

Ageing Time button to open the Change Ageing Time window.

The Filtering Database Window 3-19

Using the TSX-1620 Bridge View

As you change the ageing time, SPMA converts seconds to days:hours:minutes:seconds.

Figure 3-8. Changing the Filtering Database Ageing Time

2. Highlight and edit the Ageing Time (in seconds), and then click mouse button 1 on the Apply button.

3. Use mouse button 1 to drag the slide bar, then click Apply.

4. Click mouse button 1 next to the slide to increment the time in 100 second jumps, then click Apply.

Changing Forwarding and Static Database Entries

The only entries that can be changed or deleted in the Filtering Database are static entries. If the entry you wish to change or delete is a forwarding entry, you must add it to the Static Table. The Static Table (Figure 3-9) is used to change a forwarding entry to a static or permanent entry, or make changes to existing static entries. To open the Static Table window:

1. Open the Filtering Database window by clicking on the Front Panel button; drag down to Filtering Database to display the Filtering Database window.

2. If the Filtering Database window displays Forwarding entries, highlight the entry you want to change and click on the Add to Static Table button.

or If the Filtering Database window displays Static entries, highlight an entry and

click on the Change button.

It is also possible to open the Static Table in either case without highlighting an entry, by

NOTE

clicking on the Add To Static Table button. The static address ﬁeld will appear blank. Enter the MAC address that you want to add to the Static Table.

3-20 The Filtering Database Window

Figure 3-9. Static Table Window

Using the TSX-1620 Bridge View

Static Address

The Static Address ﬁeld will display the MAC address of the entry you highlighted in the Filtering Database window. If no entry was selected, the address ﬁeld will contain zeros, and a valid MAC address may be entered.

Receive Port

The Receive Port list box speciﬁes the port on which packets from the speciﬁed static address must be received in order for the static database entry to apply. If All is selected, the entry will be applied to packets forwarded to any port.

Forward T o Ports

The Forward To Ports list box speciﬁes the ports to which packets with the speciﬁed source address received on the speciﬁed ports will be forwarded. The port or ports selected in this list will be displayed in the Filtering Database window as the Destination Port.

To change an entry:

1. Click mouse button 1 on the port in the Receive Port list box that you want to

specify as the receive port for the entry in the Static Address ﬁeld (remember that if All is selected, the entry will be applied to packets received on any port).

2. Click mouse button 1 on any port or ports in the Forward T o Ports list that

you want to be displayed in the Filtering Database window as the destination port.

3. Click mouse button 1 on the Status button and choose one of the following:

permanent—The entry won’t be aged out or deleted on reset.

The Filtering Database Window 3-21

Using the TSX-1620 Bridge View

deleteOnReset—The entry will deleted when the bridge is reset. deleteOnTimeout—The entry is subject to the ageing timer.

4. After you set the entry’s status, click mouse button 1 on the Apply button.

Deleting a Static Table Entry

To delete a Static Table entry:

1. In the Filtering Database window, click mouse button 1 in the appropriate selection box to display the Static database.

2. Select the entry you want to delete by clicking it with mouse button 1.

3. Click on the Delete button.

Finding a Filtering Database MAC Address

To ﬁnd a source address in the Filtering Database:

1. In the Filtering Database window, click on the button to open the Find MAC Address window.

or In the Bridge Trafﬁc View, display the Device menu by clicking on the Front

Panel button. Drag down to Find MAC Address.

2. In the edit box, enter a valid MAC address and then press the Return key. If the address is found in the Filtering Database, its port location and status will appear in the list box. If it is not found, a separate window will appear with a “Not Found” message.

Figure 3-10. Find MAC Address Window

The Spanning Tree Protocol Window

Bridges in a network collectively implement a Spanning Tree Algorithm (STA) to detect and eliminate data loops in a network containing parallel bridges.

3-22 The Spanning Tree Protocol Window

Using the TSX-1620 Bridge View

In a network designed with multiple bridges placed in parallel (i.e., attached to the same network segment), Spanning Tree selects a controlling Root Bridge and Port for the entire bridged local area network, and a Designated Bridge and Port for each individual network segment. The Root bridge is the one that selects one of two or more available bridge paths between two end stations, basing its decision on factors associated with each of the bridges in the path. A Designated Port/Bridge for a network segment relays frames toward the Root Bridge, or from the Root Bridge onto the network segment. When data passes from one end station to another across a bridged local area network, it is forwarded through the Designated Bridge/Port for each network segment towards the Root Bridge, which in turn forwards frames towards Designated Bridges/Ports on its opposite side.

During the Root Bridge selection process, all bridges on the network communicate STA information via Bridge Protocol Data Units (BPDUs). It is with BPDUs that the bridges collectively determine the current network topology and ensure that all bridges have current topology information.

The Spanning Tree Protocol window displays information used by the network bridges to select the Root Bridge and parameters that affect the bridge’s participation in Spanning Tree operations.

To open the Spanning Tree Protocol window:

1. Click on the Front Panel button.

2. Drag down to Spanning T ree and release.

Figure 3-11. Spanning Tree Protocol Window

The Spanning Tree Protocol Window 3-23

Using the TSX-1620 Bridge View

The Spanning Tree Protocol window displays the following information:

Spanning T ree Version

The version shows the Spanning Tree Protocol type employed by this bridge:

• IEEE 802.1d

• DEC LAN 100

• None

You must use either 802.1d or DEC to interconnect all bridges in a network using parallel bridges. By default, a Cabletron bridge turns on the 802.1d Spanning Tree. All of Cabletron’s bridge products have the ability to use either the 802.1d or DEC Spanning Tree version, or they can be set so that no version is in effect. (A bridge should be set to None if there are no redundant loops incorporated within the network.)

All bridges in a network must use the same Spanning Tree version. Mixing Spanning Tree

CAUTION

Algorithm protocols will cause an unstable network.

Designated Root

This value represents the bridge that is the current Root Bridge as determined by the STA. The Designated Root value consists of the conﬁgurable portion of the bridge ID (i.e., the ﬁrst two octets of the eight-octet-long bridge ID) and the TSX1620’s MAC address (the last six octets of the bridge ID). This value is used as the Root Identiﬁer parameter in all conﬁguration BPDUs originated from this node.

Num. T opology Chgs.

Indicates the number of times the bridge’s Topology Change ﬂag has been changed since the bridge was powered up or initialized. The Topology Change ﬂag increments each time any of the network’s bridges enters or leaves the network or when the Root Bridge ID changes.

The values for the following three ﬁelds—Forward Delay, Max Age, and Hello Time—represent the values that are currently being used by all bridges, as dictated by the Root bridge. In the Spanning Tree Protocol window, you can view and set the values—Root Forward Delay, Root Max Age, Root Hello Time—that will be in effect when the bridge for which you are setting the parameters becomes the Root Bridge.

Forward Delay

The length of time, in seconds, that controls how long a bridge port remains in each state (Forwarding, Learning, Listening, etc.) when moving toward the Forwarding state. During a topology change, the Forward Delay is also used as the Filtering Database Ageing Time, which ensures that the Filtering Database will contain current topology information. The Root Bridge sets the Forward Delay.

3-24 The Spanning Tree Protocol Window

Using the TSX-1620 Bridge View

Max Age

The current setting for the bridge’s BPDU ageing timer, in seconds. The ageing timer deﬁnes the maximum number of seconds that a Conﬁguration BPDU is retained by the bridge before it is discarded. During normal operation, each bridge in the network receives a new Conﬁguration BPDU before the ageing timer expires. If the timer expires before a new Conﬁguration BPDU is received, it indicates that the former Root is no longer active. The remaining bridges begin Spanning Tree operation to select a new Root. The Root Bridge determines the Max Age. The range for this ﬁeld is from 6 to 40 seconds, with a default value of 20 seconds.

Hello Time

Indicates, in seconds, the length of time the Root Bridge, or bridge attempting to become the Root, waits before resending a Conﬁguration BPDU. The Root Bridge determines the Hello Time.

Priority

The Spanning Tree Algorithm assigns each bridge a unique identiﬁer, which is derived from the individual port’s MAC address and its priority as determined by the Spanning Tree Algorithm or your setting. The bridge with the lowest value of bridge identiﬁer is selected as the Root. A lower priority number indicates a higher priority; a higher priority enhances a bridge’s chance of being selected as the Root.

Acceptable values range from 0-FFFF and can be edited to change the network topology, if needed. The default is 8000.

Root Port

The port identiﬁer (i.e., the physical index number) for the port that provides the lowest cost path to the Root Bridge. The Root Port ﬁeld displays 0 if this bridging device is the Root Bridge.

Root Cost

Indicates the cost of the data path from this bridge to the Root Bridge. Each port on each bridge adds a “cost” to a particular path that a frame must travel. For example, if each port in a particular path has a Path Cost of 1, the Root Cost would be a count of the number of bridges along the path. This ﬁeld will read 0 if the TSX-1620 is the Root Bridge. See Changing a Port’s STA Parameters,

page 3-29, to ﬁnd out how to set a port’s Path Cost.

Hold Time

The minimum time, in seconds, that can elapse between the transmission of Conﬁguration BPDUs. The Hold Time ensures that Conﬁguration BPDUs are not transmitted too frequently through any bridge port. Receipt of a Conﬁguration BPDU starts the Hold Time count at a device. If the Hold Time expires, the port invokes the Transmit Conﬁguration BPDU procedure, which sends conﬁguration change information to the Root. The Hold Time is a ﬁxed value, as speciﬁed by the IEEE 802.1d speciﬁcation.

The Spanning Tree Protocol Window 3-25

Using the TSX-1620 Bridge View

The values for the Forward Delay, Max Age, Hold Time, and Hello Time ﬁelds are stored

NOTE

within the MIB in units of hundredths of a second rather than seconds; your Cabletron management application converts hundredths of a second to seconds for display purposes. You can use any SNMP Set Request tool to edit the values for these three ﬁelds; just remember that you must enter your values in hundredths of seconds, rather than in seconds.

Root Forward Delay

The Forward Delay (in seconds) that will be implemented by this bridge if it is the Root or becomes the Root. (The Root Bridge in the network sets the Forward Delay for all bridges in the Spanning Tree network.)

The IEEE 802.1d speciﬁcation recommends that Forward Delay = 15 seconds, with an allowable range of 4 to 30 seconds.

To ensure proper operation of the Spanning Tree Algorithm, the IEEE 802.1d speciﬁcation

TIP

recommends that you always observe the following relationship between Forward Delay and Max Age:

2 x (Forward Delay - 1.0) > Max Age

Root Max Age

The Max Age value (in seconds) that will be implemented if this bridge is the Root or becomes the Root. (The Root Bridge in the network sets the Max Age for all bridges in the Spanning Tree network.)

The IEEE 802.1d speciﬁcation recommends that Max Age = 20 seconds, with an allowable range of 6 to 40 seconds.

Root Hello Time

The Hello Time that will be implemented if this bridge is the Root or becomes the Root.

The IEEE 802.1d speciﬁcation recommends that Hello Time = 2 seconds, with an allowable range of 1 to 10 seconds.

The Spanning Tree Port Table button opens the window in which you set Spanning Tree parameters for individual bridge ports; see The Spanning Tree

Port Parameters Window, page 3-27, for more information.

3-26 The Spanning Tree Protocol Window

Using the TSX-1620 Bridge View

Changing Spanning Tree Parameters

To change the Bridge Priority, Root Forward Delay, Root Max Age, or Root Hello Time:

1. In the Spanning Tree Protocol window, highlight the current value of the ﬁeld you want to change.

2. Type the new value in the appropriate text box and press Enter or Return on the keyboard.

The Spanning Tree Port Parameters Window

The Spanning Tree Algorithm ensures that only a single bridge path exists between any two end stations in a network designed with multiple bridges placed in parallel; it also ensures that on any given bridge, only one port path exists between the bridge and any one network segment. In the Spanning Tree Port Table you can view and edit the Spanning Tree values for individual ports; the Spanning Tree Port parameters affect a port’s participation in the Spanning Tree.

NOTE

Setting Spanning Tree Port Parameters only affects port selection on a particular bridge; settings do not affect the TSX-1620’s device-level priority in the network’s Spanning Tree.

To open the Spanning Tree Port Table window:

1. Display the Device menu by clicking on the Front Panel button.

2. Drag down to Spanning T ree to open the Spanning Tree Protocol window.

3. In the Spanning Tree Protocol window, click on the Spanning T ree Port T able button.

1. In the Bridge Trafﬁc View, click mouse button 3 on a port to display the Port menu and drag down to Spanning T ree.

The scroll list at the top of the window lists each bridge port available on the device and its current port priority. Below the Port List, the window includes the following:

Priority (Port)

If two or more ports on the same bridge are connected to the same network segment, each port will receive the same device-level values for Root ID, Root Cost, and Bridge ID in Conﬁguration BPDUs. In this case, the BPDU’s port-level information—the transmitting port’s identiﬁer and its manageable Priority

The Spanning Tree Port Parameters Window 3-27

Using the TSX-1620 Bridge View

component— is used to determine which port on this bridge will be the Designated Port for that segment. A lower number indicates a higher priority; the default is 80. The allowable range is 0 to FF.

Path Cost

The portion of the total path cost associated with this port. Lowering a port’s Path Cost makes a port more competitive in the selection of the Designated Port. The default value is 100 for Cabletron bridges. The allowable range is from 1 to 65535.

Figure 3-12. Spanning Tree Port Parameters Window

Designated Cost

The cost of the path from this port to the Root Bridge on the network. If the highlighted port is the Root Port, the Designated Cost is 0. If this bridge is the Root Bridge, all its bridge ports have a Designated Cost of 0. This value is compared to the Root Path Cost ﬁeld in received conﬁguration BPDUs.

Designated Root

The unique Bridge Identiﬁer of the bridge that is assumed to be the Root Bridge on the network; this information is contained in the Conﬁguration BPDUs.

3-28 The Spanning Tree Port Parameters Window

Designated Bridge

Displays the MAC address and priority component of the Bridge ID for the bridge that is believed to be the Designated Bridge for the network segment associated with this port.

The Designated Bridge ID, along with the Designated Port and Port Identiﬁer parameters for the port, is used to determine whether this port should be the Designated Port for the network segment to which it is attached.

Designated Port

The Port ID of the port on the Designated Bridge for this port’s segment. The Designated Port is the bridge port that offers the lowest path cost to the Root Bridge.

Forward T ransitions

The number of times this port has moved from the Learning state to the Forwarding state since the device was started or since it was last reset.

Changing a Port’s STA Parameters

Using the TSX-1620 Bridge View

To change a port’s Priority or Path Cost:

1. In the scroll list, click mouse button 1 on the port you want to change (use the scroll bar if necessary to display the desired port). You can only select one port at a time. The highlighted port’s Spanning Tree parameters appear in the boxes below the list.

2. Highlight and edit the Priority and Path Cost boxes as required. After you type in the new value in a box, press Enter or Return on the keyboard.

The Source Routing Conﬁguration Window

The Source Routing Conﬁguration window allows you to view, set, and change Source Routing conﬁguration options for ports on the TSX-1620. Using this window, you can assign logical ring numbers to the TSX-1620’s physical ports via the Local Segment ﬁeld. If you assign the same local segment number to multiple physical ports, the TSX-1620 will treat all segments attached to those ports as if they were on the same physical ring.

To open the Source Routing Conﬁguration window from the Bridge Trafﬁc View:

1. Display the Device menu by clicking on the Front Panel button.

2. Drag down to SR Conﬁguration. or

1. In the Bridge Trafﬁc View, click mouse button 3 on a port to display the Port menu underage down to SR Conﬁguration.

The Source Routing Conﬁguration Window 3-29

Using the TSX-1620 Bridge View

The scroll list at the top of the window lists each physical TSX-120 port and its Spanning Tree Explorer (STE) Span Mode, which determines how this port will behave when presented with an STE packet. Possible values are as follows:

auto-span This value can only be returned by a bridge that

disabled This value indicates that the port will not accept or send

forced This value indicates that the port will always accept and

implements the Spanning Tree Protocol. A port set to auto-span will forward an STE packet when it is in the Forwarding state; otherwise, it will discard the packet.

STE packets; any STE packets received will be discarded.

propagate STE packets, regardless of its port state.

Figure 3-13. Source Routing Conﬁguration Window

Interface

The port number highlighted in the scroll list. The Interface number indicates the port selected in the list box and described by the other ﬁelds in the window.

Hop Count

The Hop Count Limit (HCL) stops a frame from being forwarded over more than the speciﬁed number of bridge hops; it sets the maximum number of routing

3-30 The Source Routing Conﬁguration Window

Using the TSX-1620 Bridge View

descriptors (bridge hops) allowed in a packet’s Routing Information Field. A bridge port will discard any explorer packets whose RIF’s exceed the maximum number of routing descriptors.

Local Segment Number

Normally, when assigning local segment numbers, you must assign a unique number to each network segment in a network; this ﬁeld represents the network segment to which this port is attached physically. The bridge adds the Local Segment number to the routing information ﬁeld of source route discovery frames. Valid entries range from 0 to 4095. A value of 65535 indicates that no segment number is assigned to this port. For the TSX-1620, you can assign the same local segment number to separate physical rings attached to multiple ports on the TSX-1620, and the device will treat them as if they were a single ring. For each separate local segment number deﬁned for the TSX-1620’s ports, a separate Bridge Port box will be displayed in the Bridge View.

Bridge Number

A Bridge Number uniquely identiﬁes this bridge port when two bridge ports are used to span the same two segments; otherwise unique Bridge Numbers are not necessary for individual ports. The Bridge Number should be in the range of 0 to

15. The value 65535 indicates that no Bridge Number is assigned.

NOTE

Target Segment Number

The unique network number of the target network segment that the bridge attaches to. Valid entries range from 0 to 4095. A value of 65535 indicates that no target segment number is assigned to this port. Individual ports on a TSX-1620 should each be assigned unique values for this ﬁeld.

The TSX-1620 does not use the Target Segment Number ﬁeld because it has more than two ports and therefore could have multiple target segments for each local segment.

Largest Frame

The maximum size of a frame’s INFO ﬁeld that this port can send or receive. The default value for this ﬁeld is set in the TSX-1620’s ﬁrmware. When it receives an explorer frame, the bridge uses its Largest Frame value to decide if it should modify the Routing Control ﬁeld of the Routing Information ﬁeld. A Source Route bridge has the ability to embed this information into the explorer packets so that end stations can adjust their Mtu size accordingly.

Possible Largest Frame sizes as deﬁned by the 802.5 source routing bridging speciﬁcation are 516, 1500, 2052, 4472, 8144, 11407, 17800, and 65535.

The Source Routing Conﬁguration Window 3-31

Using the TSX-1620 Bridge View

A Source Route-capable bridge has the ability to embed Largest Frame size information

NOTES

into the explorer packets. If there are multiple bridge hops from one end node to another, this allows the end stations to realize the maximum frame size limits for any network segment in the path between them, and adjust their Mtu size accordingly.

If there are multiple hops from one end node to another, consider the lowest Largest Frame Size of all network segments and bridges in the path when setting the Largest Frame Size. It is possible that an older bridge may support a lower maximum frame size; subsequently the stations would have to reduce their Mtu size in order to communicate over it. Largest Frame size is different for 4 and 16 Mbps Token Rings (4,500 bytes and 18,000 bytes, respectively), and Ethernet network segments have a maximum frame size of 1,500 bytes.

STE Span Mode

The Spanning Tree Explorer Span Mode determines how a bridge port behaves when it receives an STE packet (also known as Single Route Explorer packet). Possible STE Span modes are disabled, forced, and auto-span, as described earlier in this section.

Changing Source Routing Port Parameters

To change a port’s Hop Count, Local Segment, Bridge Number, or Target Segment:

1. In the Source Routing Conﬁguration window, use the scroll list to display the physical TSX-1620 port for which you want to change values.

2. Select a port by clicking mouse button 1 on the port you want to change. You can only select one port at a time. The port’s index number and Source Routing parameters appear in the boxes below the list.

3. Highlight and edit the Hop Count, Local Segment, Bridge Number, and Target Segment boxes as required.

4. Once you have made all of your edits, click on the Apply button.

To change a port’s Largest Frame or STE Span Mode:

1. In the Source Routing Conﬁguration window, use the scroll list to display the physical TSX-1620 port you want to change.

2. Clic k mouse b utton 1 on the port you want to change (you can only select one port at a time). The port’s Source Routing parameters appear in the boxes below the list.

3. Click on the Largest Frame or STE Span Mode button and then drag to the appropriate menu choice. The selected value appears on the button.

4. Once you have made all of your choices, click on the Apply button.

3-32 The Source Routing Conﬁguration Window

Using the TSX-1620 Bridge View

Creating Bridge Trafﬁc Charts, Graphs and Meters

The Bridge application uses the SPMA Charts, Graphs and Meters tools to depict bridge statistics describing activity at the bridge-port level. Once running, however, a pie chart, graph or meter is independent from the application where it was started. Although the windows you open to create pie charts, graphs and meters have unique variable lists, the procedures for creating a pie chart, a graph or a meter are the same.

Graphing capabilities are provided by an application that is included in HP Network

NOTE

Node Manager and IBM NetView; therefore, graphs are only available when SPMA is run in conjunction with one of these network management platforms. If you are running SPMA in a stand-alone mode or in conjunction with SunNet Manager, no graphing capabilities are available and no graph-related options will be displayed on buttons or menus. Note that the screens displayed in this guide will include the graph-related options where they are available; please disregard these references if they do not apply.

To access the Pie Chart, Graph and Meters tools from the Bridge Trafﬁc View Port menus:

1. Click mouse button 3 on a Bridge Port box to display the Bridge Port menu.

2. Dr ag do wn to select Pie Chart or Graphs/Meters—>Transparent or Source

Routing, as appropriate.

Figure 3-14. Pie Chart Window

Creating Bridge Trafﬁc Charts, Graphs and Meters 3-33

Using the TSX-1620 Bridge View

For complete descriptions of chart, graph and meter variables and details on how to create and control a pie chart, graph or meter, see the chapter on charts, graphs and meters in the SPMA Tools Guide.

Conﬁguring Forwarding Thresholds

You can deﬁne notiﬁcation thresholds for bridge port forwarding levels and then have SPMA use those thresholds to do one or more of the following:

• Color code the Bridge Port display boxes

• Send Internet mail to a registered user

• Launch a program on your management workstation

To open the Forwarding Thresholds window:

1. Clic k button 3 anywhere within a Bridge Port display bo x in the Bridge View to display the Port menu.

2. In the Port menu, click button 3 on Forwar ding Thresholds —>Transparent or Source Routing to open the Forwarding Thresholds window.

Since the Transparent and Source Routing Threshold windows look and function the same, the window is described only once.

3-34 Conﬁguring Forwarding Thresholds

Using the TSX-1620 Bridge View

A trafﬁc level is the speciﬁed value of forwarded frames as a percentage of total received frames.

You can specify trafﬁc levels that deﬁne the boundary between the low and medium ranges and between the medium and high ranges.

When SPMA polls the device and detects that the percentage of forwarded frames has mo ved into a new range, heading either up or down, the notiﬁcation options and conditions in use for that port take place.

Figure 3-15. Port Forwarding Thresholds Window

SPMA polls a bridge at preset intervals, as deﬁned in the Polling Intervals window

NOTE

accessed from the Bridge View Device menu. A port’s trafﬁc level can pass from one range to the next and then back to the original level between polls from SPMA. When this occurs, SPMA won’t record that the threshold has been passed because the event was never observed.

To set bridge port thresholds, notiﬁcation options, and notiﬁcation conditions:

1. In the F orw arding Thresholds window, highlight the port where you want to set

thresholds. You can select multiple ports by clicking button 1 on each one. To deselect a port, click it again. To apply the settings to all bridge ports, you can use the options provided at the bottom of the screen rather than selecting all ports in the scroll list.

Conﬁguring Forwarding Thresholds 3-35

Using the TSX-1620 Bridge View

2. In the Modify Range section of the Forwarding Thresholds window, you can edit the line that displays the high end of the Low and Mid ranges, or you can use the slide bars to specify the thresholds. You can also assign a color to each of the three ranges. The Bridge P ort box es on the Bridge Trafﬁc View will be colored according to the settings made here (i.e., if you assign the color red to the High trafﬁc range, then a Bridge Port box will be colored red when its trafﬁc range is High). To set the high end of the Low and Mid ranges, and assign color codes to all three ranges:

a. Change the upper limit of the Low and Mid trafﬁc ranges by highlighting

the value, typing the new value, and pressing Enter or Return. You may also change the value by moving the slide bar next to the value you wish to change until the desired range is reached.

b. By default, bridge ports are color coded in the Bridge Trafﬁc View

according to their trafﬁc level: Low range is green; Mid range is yellow; High range is red. To assign color codes to the three trafﬁc ranges, click on the Low, Mid, or High buttons to the left of the range ﬁelds, drag to highlight the desired color, and release. The selected color will be displayed on the button, and will be used in the Bridge Port boxes when the color’s corresponding range is reached.

3. In the Notiﬁcation Options section, you can enable/disable threshold event logging, enable/disable the Bridge Port box colors, and assign threshold events (send mail or execute a program) to the different (or to all) threshold ranges. To do so:

a. To disable threshold event logging, deselect the Log Changes in State

checkbox. By default, all threshold events are logged. For more information about the Forwarding Log, see Vie wing the Forwarding Log on page 3-37.

b. To enable/disable the colors, clic k button 1 on the Color bo x. When colors

are disabled, the Bridge Port box colors in the Bridge Trafﬁc View remain as they were when the colors were last enabled.

c. To send mail or execute a program when a threshold range is reached,

ﬁrst click the Threshold Range button to which you want to apply the threshold event. To send mail for a threshold event, select the Send Mail box and enter the name of a registered mail user. To have a threshold event launch a program, select the Execute Program (Args) box and enter the name of an executable ﬁle, including required arguments.

4. Notiﬁcation Conditions make your Notiﬁcation Options subject to deﬁned conditions:

a. If you check the In—Out—In box, notiﬁcation takes place when the

threshold passes from one range to another and then back. The number in the Delay box speciﬁes the number of times this transition is to take place before notiﬁcation is launched. The Current box counts down the transitions.

3-36 Conﬁguring Forwarding Thresholds

Using the TSX-1620 Bridge View

b. If you select the Remain—In box, notiﬁcation takes place when the

threshold passes from one range to another, and stays in that range for the number of polling cycles speciﬁed in the Delay box.

c. If you check the Once Only bo x, notiﬁcation only tak es place the ﬁrst time

the Delay count is reached.

5. The Save option gives y ou three choices as to how the options and conditions

you have selected will be saved. a. If you choose Disabled, none of the options and conditions you have

chosen will be saved to the bridge database.

b. If you select As Default, the chosen options and conditions will be saved

as default values . The sav ed inf ormation will be used for an y IP not having an entry in the bridge database.

c. If you select By IP, the options and conditions chosen for that IP will be

saved to the bridge database, and the next time the application is run for this device the saved values will be used.

6. When y ou’re ﬁnished setting thresholds and notiﬁcation options, clic k button 3

on the Apply button and choose either Selected Only or All. Selected Only applies the selected Forwarding Thresholds settings to the ports that are highlighted in the scroll list near the top of the Forwarding Thresholds window.

Viewing the Forwarding Log

The Forwarding Log records an entry each time a bridge port’s trafﬁc passes a preset trafﬁc threshold. By default, logging is enabled for all bridge ports.

To open the Forwarding Log window:

1. In the Bridge Trafﬁc View, click mouse button 3 in one of the bridge ports to

display the Port menu.

2. In the Port menu, click button 3 on Forwarding Log and then drag right to

Transparent or Source Routing.

Viewing the Forwarding Log 3-37

Using the TSX-1620 Bridge View

NOTE

Figure 3-16. Sample Forwarding Log Window

The Transparent and Source Routing Forwarding Log windows look and function the same.

To select a different Bridge Port log:

1. Use the slide bar at the top of the Forwarding Log window to select a diff erent port.

To clear all logs or just the current log:

1. Click on the Clear button and then select the appropriate choice, either Current Log or All Logs.

To change the number of entries retained by the log:

1. Highlight the Max Number line, type a new number and press Return on the keyboard.

Log entries are stored in the SPMA software. When the maximum number of entries is reached, the entries get aged out as necessary, starting with the oldest entry ﬁrst.

3-38 Viewing the Forwarding Log

Using the TSX-1620 Bridge View

To save log ﬁles:

1. Click on the Save button and select either Current Log or All Logs to open

the Save Log window.

2. In the Save Log window, enter a ﬁle name for the ﬁle to be saved and then

click on the OK button. The default directory for saved log ﬁles is the current directory. To specify a different directory, include the path name with the log ﬁle name.

To disable the Forwarding Log of all bridge ports or individual bridge ports:

1. Click button 3 on the appropriate Bridge Port box to display the Port menu.

2. In the Port menu, click button 3 on Forwar ding Thresholds and then drag

right to either Transparent or Source Routing.

3. In the Forwarding Thresholds window, deselect the Log Changes in State

box.

4. Click on the Apply button and then click on either Selected Only or All.

Changing Polling Intervals

Much of the information displayed in the Bridge Trafﬁc View is gathered periodically rather than continuously. You can edit the times between these periodic polls.

To edit the polling times:

1. Display the Device menu by clicking on the Front Panel button.

2. Drag down to Polling Intervals and release. The Polling Intervals window

displays.

Figure 3-17. The Polling Intervals Window

3. Highlight and edit the Device Info and Bridge Port Display Info boxes and

then click on the Apply button to save changes.

Changing Polling Intervals 3-39

You can change values for the following polling interval ﬁelds:

Device Info

Speciﬁes the time, in seconds, that SPMA waits before updating the Front Panel information (Uptime, Location, and so forth) in the Bridge Trafﬁc View.

Bridge Port Display Info

Speciﬁes the time, in seconds, that SPMA waits before updating statistical and status information in the Bridge Trafﬁc View port display boxes.

Enabling and Disabling Ports

When you disable a bridge port, you disconnect that port’s network from the bridge entirely. Nodes connected to the network can still communicate with each other, but they can’t communicate with the bridge and other networks connected to the bridge.

In Transparent bridges, the disabled port does not forward any packets, nor does it participate in Spanning Tree operations. When you enable a port on a Transparent bridge, the port moves from the Disabled state through the Blocking, Learning, and Listening states to the Forwarding state.

Using the TSX-1620 Bridge View

The procedures for enabling and disabling Source Routing bridge ports are slightly different from the procedures used to enable and disable for Transparent Bridge ports. The SPMA Bridge application also gives you the option of simultaneously disabling both Source Route and Transparent ports on an SRT bridge.

Enabling and disabling a port changes its Port Status, not its Port State. An enabled port

NOTE

is able to participate in bridging and Spanning Tree operations. A disabled port on a Transparent bridge does not participate in bridging or Spanning Tree operations.

Enabling and Disabling a Transparent Bridge Port

To enable or disable a Transparent bridge port:

1. In the Bridge Trafﬁc View, display the Port menu by clicking mouse button 3 in

a Bridge Port box. Select the port that connects to the network that you want to enable or disable.

2. In the Port menu, click button 3 on Enable or Disable, drag right to

Transparent, and release.

When you disable a Transparent bridge port, the port’s display box turns blue. When you enable a Transparent bridge port, the port’s color changes to indicate

Enabling and Disabling Ports 3-40

Using the TSX-1620 Bridge View

the forwarding threshold range. (Port color codes are only active if the Color box is selected in the Forwarding Thresholds window. Color codes are on by default.)

Enabling and Disabling a Source Routing Bridge Port

With Source Routing bridging, you can disable all trafﬁc through a particular bridge port, or only trafﬁc that would otherwise be forwarded to a speciﬁc port. For example, you can disable all trafﬁc that would be forwarded from port 2 to port 4, but allow trafﬁc to be forwarded from port 2 to ports 1 and 3.

The Enable/Disable Source Routing window lets you enable or disable Source Routing trafﬁc between the selected port (the port you used to open the window) and any other bridge port.

To enable or disable a Source Routing bridge port:

1. In the Bridge Trafﬁc View, display the Port menu by clicking mouse button 3 in

the Bridge Port box that represents the network that you want to enable or disable.

2. In the Port menu, click on Enable or Disable, drag right to Source Routing,

and release to open the Enable/Disable Source Routing window.

Figure 3-18. Port Enable/Disable Source Routing Window

3. Select one or more Destination Ports in the scroll list by clicking mouse button

1 to highlight selections in the list.

4. To enable or disable all Destination Ports, click on the Enable or Disable

button and choose All from the drop-down menu. To enable or disable the ports you highlighed in the scroll list, click on the Enable or Disable button and choose Selected from the drop-down menu.

Enabling and Disabling Ports 3-41

Using the TSX-1620 Bridge View

Enabling and Disabling Both Transparent and Source Routing on a Bridge Port

To enable or disable both Source Routing and Transparent bridging on a port:

1. In the Bridge Trafﬁc View, display the Port menu by clicking mouse button 3 in a Bridge Port box. Select the port that connects to the network that you want to enable or disable.

2. With mouse button 3, drag down to Enable or Disable—>Both. Both Source Route and Transparent bridging for the port will be enabled or disabled, as selected.

3-42 Enabling and Disabling Ports

Index

Add to Static Table button 3-20 Admin 2-13 Admin button 3-9 Ageing Time 3-17, 3-19 All Paths Explorer (APE) packet 3-2 application display menu structure 2-7, 2-8 application display mode

changing 2-6

auto-span mode 3-30

Bits Per Char 2-20 BLK (Blocking) 2-13 BPDU ageing timer 3-25 Bridge 2-6 Bridge application display 2-8 Bridge Application Display Menu Structure

2-8 Bridge Conﬁg utility 2-17 Bridge menu 2-8 Bridge Number 3-31 Bridge Port box 3-7

color coding 3-8 bridge port Color codes 3-36 Bridge Port Display Form

Options 2-13 Bridge Port Display Info 3-40 Bridge Port Number 2-14 bridge port state 3-9

blocking 3-10

broken 3-10

disabled 3-9

forwarding 3-10

learning 3-10

listening 3-10 bridge port status 3-9

disabled 3-9

enabled 3-9 bridge port Trafﬁc levels 3-35 Bridge Ports, enabling/disabling 2-32 Bridge Protocol Data Units (BPDUs) 3-2, 3-23

Bridge Statistics window 3-13

accessing 3-13

Bridge Status window

setting and changing information 3-12 Bridge Trafﬁc View buttons 3-8 Bridge Type 2-22 Bridge View 2-8

access levels 3-4

accessing 2-30

changing front panel information 3-12

launching 3-3 bridging type 3-14

sourceroute-only 3-14

srt 3-14

transparent-only 3-14

unknown 3-14 BRK 2-13 broadcast packet 3-2

change the Dynamic Ageing Time 3-19 clear network logs 3-38 Clear Stats 2-14 Color Codes

Bridge Application Display 2-14

Interface Application Display 2-12 color codes 2-3 Community Names utility 2-18 Conﬁguration BPDU 3-25 Console Conﬁg utility 2-19 Contact Status 2-3, 2-16, 3-6 creating icons 1-2 Current box 3-36

daylight savings time 2-24 decLb100 3-24 Delay box 3-36 DelayExceedDiscard 3-14 deleteOnReset entry status 3-18, 3-22 deleteOnTimeout entry status 3-18, 3-22

Index-1

Index

Delta button 3-9, 3-10 Designated Bridge 3-23, 3-29 Designated Cost 3-28 Designated Port 3-23, 3-29 Designated Root 3-24, 3-28 Destination MAC address 2-17 Destination Port 3-18 Destination Ports 3-18 Detail View 3-10

port summary information 3-12 Detail View bridge port info 3-12 Device button 2-4

bridge 3-7 Device Conﬁguration 2-16 Device General Status 2-16 Device Info 3-40 Device Location 3-6 Device menu 2-4

bridge 3-7 Device Name 2-4, 3-6 Device Performance

monitoring 2-9 DIS (Disabled) 2-13 disable a bridge network 3-40 disable bridge ports 2-33 disable the Forwarding Log 3-39 disabled

STE Span Mode 3-30 Discards 2-11 discovering Cabletron devices 1-2 Dynamic Ageing Time 3-15, 3-19

enable bridge ports 2-33 Enabling/Disabling Ports 2-32 Errors 2-11 Execute Program 3-36 explorer packet 3-2

Filtering Database 3-2

accessing 3-16 ﬁrmware revision

viewing 2-24 ﬁrmware version 1-7 Flow Control 2-21 FN100 Bridge View 2-8 FN100 Hub View 2-5 forced

STE Span Mode 3-30 Forward 3-9 Forward Delay 3-9, 3-19, 3-24 Forward Transitions 3-29 forwarding entry 3-15 Forwarding Log 3-37 Forwarding state 3-15 Forwarding Threshold Log window

accessing 3-37 Forwarding Thresholds window

accessing 3-34 Frames button 3-9 Frms In 3-9 Frms Out 3-9 Front Panel 2-16, 3-5 front panel 2-3 FWD (Forwarding) 2-13

Gateway Address 2-22 Graphics Mode 2-21

Hardware 2-20 HCL 3-30 Hello Time 3-25 History window 1-4 Hold Time 3-25 Hop Count 3-30 hostname 2-2, 3-4 Hub View 2-1, 2-3

navigating 2-2

opening 2-1 Hub View Front Panel 2-16

icon menus, accessing 1-2 IF Conﬁg utility 2-21 IfIndex 3-14 In Discards 2-11 In Errors 2-11 In Load 2-10 In Non-Unicast 2-12 Info button

bridge 3-7 INFO ﬁeld 3-31 In—Out—In box 3-36 Interface 2-6

Index-2

Index

Interface application display 2-7 Interface Application Display Menu

Structure 2-7 Interface List 2-29 Interface Number 2-10 Interface port display form

options 2-9 invalid entry status 3-17 IP Address 2-4, 2-22, 3-6

Largest Frame 3-31 Learned Entry Discards 3-17 learned entry status 3-17 LIS (Listening) 2-13 Load 2-10 local management port 2-19 Local Segment Number 3-31 Location 2-4 log ﬁles

saving 3-39 LRN (Learning) 2-13

MAC Address 3-6 management entry status 3-17 manual conventions 1-3 Max Age 3-25 maximum log entries 3-38 maximum transfer unit 3-15 menu

Bridge Port 3-5

Device 3-5 Menu Structure 2-7, 2-8 Meters tool

accessing 3-33 MIB I, II 1-2 MIB I, II Tool 2-30 MIBTree 1-2 Module Index 2-5 Module Type 2-5 mouse, using in the Hub View 2-5 MtuExceedDiscard 3-15

NetBIOS Broadcast Reduction 2-22 NetBIOS MAC addresses 2-23 NetBIOS name 2-24

NetBIOS utility 2-23 NLK 2-13 Non-Unicast 2-12 notiﬁcation conditions 3-35 notiﬁcation options 3-35 Number of Topology Changes 3-24

OFF 2-13 ON 2-12 Once only 3-37 open the Filtering Database window 3-16 opening the Hub View 2-1 Oper Status 2-9 other entry status 3-17 Out Discards 2-11 Out Errors 2-12 Out Load 2-11 Out Non-Unicast 2-12

Parity 2-20 Path Cost 3-28 Percentage button 3-9, 3-10 permanent entry status 3-18, 3-21 Physical Address 2-23 Pie Chart tool

accessing 3-33

polling interval

editing 3-40 Polling Intervals 2-4 polling intervals 2-15 Port

Changing Path Cost 3-29

Changing Priority 3-29

Designated 3-29

Designated Cost 3-28

Path Cost 3-28 Port Color Codes

Bridge Application Display 2-14

Interface Application Display 2-12 Port Display Form 2-5, 2-9, 2-16 Port Display Form Options

Bridge 2-13

Interface 2-9 Port Index 2-5 Port Operational State 2-16 Port Security utility 2-25 Port Status 2-5

Index-3

Index

PortCircuit 3-14 Priority 2-22, 3-25 Priority (Port) 3-27

Quit button 2-5

bridge 3-7

Receive Port 3-18 Remain—In box 3-37 Re-sizing a window 1-3 RIF 2-24 Root

Cost 3-25 Forward Delay 3-26 Hello Time 3-26 Max Age 3-26 Port 3-25

Root Bridge

selection process 3-23 Root bridge 3-23 Routing Information Field (RIF) 3-2

and hop count 3-31 routing information indicator (RII) bit 3-3

Save As Defaults 2-16 screen displays 1-3 self entry status 3-17 Send Mail 3-36 serial port 2-19 set bridge port thresholds 3-35 SNMP MIB2 System Group window 2-30 Software Revision 2-25 Source Address 3-17 Source Address List

port 2-31 Source Route mode 3-16 Source Routing 3-2 Source Routing button 3-10 Source Routing Conﬁguration

port 2-30 Source Routing Conﬁguration window 2-31

accessing 3-29 Spanning Tree 2-17, 2-22 Spanning Tree Algorithm (STA) 3-2, 3-22

version 3-24

Spanning Tree Explorer (STE) packet 3-2, 3-3 Spanning Tree Explorer (STE) Span Mode

3-30, 3-32

Spanning Tree Port Table 3-28

accessing 3-27 Spanning Tree Port Table button 3-26 Spanning Tree Protocol window 3-23

accessing 3-23 Speed 2-10, 2-20 spmarun script 3-4 SR Conﬁguration 2-31 Sr Frames Forwarded 2-14 stand-alone mode 1-2, 2-4 static entry 3-15 Statistics 2-10, 2-16

Clearing 2-14 Stop Bits 2-20 Subnet Mask 2-22 system date

viewing and changing 2-24 System Group window 2-30 System Information utility 2-24 system time

viewing and changing 2-24

Target Segment Number 3-31 Technical Support 1-6 Topology Change ﬂag 3-24 Tp Frames Filtered 2-14 Tp Frames Forwarded 2-13 translational bridge 3-3 Transparent button 3-10 Trap IP 2-19 TSX-1620 ﬁrmware revision

viewing 2-24 TSX-1620 Hub View 2-3 tsxmod 2-1 Type 2-10

UNK 2-13 Unknown (---) 2-13 Uptime 2-4, 3-6 Use Defaults 2-15

version numbers 1-6

Index-4

viewing and changing the system date and

time 2-24

Index

Index-5

Index

Index-6

Cabletron Systems TSX-1620 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Notice

Contents

Introduction to SPMA for the TSX-1620

Using the TSX-1620 User’s Guide

What’s NOT in the TSX-1620 User’s Guide. . .

Conventions

Screen Displays

Using the Mouse

Getting Help

TSX-1620 Firmware

Using the TSX-1620 Hub View

Using the Hub View

Navigating Through the Hub View

Hub View Front Panel

Using the Mouse in the TSX-1620 Hub View

The TSX-1620 Application Displays

The Interface Application Display

The Bridge Application Display

Monitoring Device Performance

Port Display Form

Interface Port Display Form Options

Bridge Port Display Form Options

Clearing Statistical Information

Managing the Device

Setting the Polling Intervals

Changing the Displayed Interface

Viewing NetBios Information

Viewing and Changing System Information

Viewing Your Port Security Settings

Viewing the Interface List

Accessing the MIB I, II Tool

Accessing Bridge Management

Viewing a Bridge Port’s Source Address List

Enabling/Disabling Bridging for TSX-1620 Ports

Enabling and Disabling Bridge Ports

Using the TSX-1620 Bridge View

Bridging Basics

Transparent Bridging

Source Route Bridging

Source Route Transparent Bridges

The Bridge Port Display

Using the Detail View Window

The Bridge Status Window

The Bridge Statistics Window

The Filtering Database Window

Viewing the Filtering Database

Changing Forwarding and Static Database Entries

Deleting a Static Table Entry

Finding a Filtering Database MAC Address

The Spanning Tree Protocol Window

Changing Spanning Tree Parameters

The Spanning Tree Port Parameters Window

Changing a Port’s STA Parameters

Changing Source Routing Port Parameters

Viewing the Forwarding Log

Changing Polling Intervals

Enabling and Disabling Ports

Enabling and Disabling a Transparent Bridge Port

Index