Cabletron Systems 9A128-01 User Manual

Title Page

Cabletron Systems

9A128-01

™

Management Module Guide

for Microsoft

Windows

™

Notice

Cabletron Systems reserves the right to make changes in speciﬁcations and other information contained in this document without prior notice. The reader should in all cases consult Cabletron Systems to determine whether any such changes have been made.

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Order Number: 9031589-03 August 1997

Cabletron Systems, Inc. P.O. Box 5005 Rochester, NH 03866-5005

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iii

Chapter 1 Introduction

Using This Guide ..........................................................................................................1-1

Related Reading ............................................................................................................1-2

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

Common Window Fields...................................................................................... 1-3

Using Buttons .........................................................................................................1-4

Getting Help ..................................................................................................................1-4

Using On-line Help................................................................................................ 1-4

Getting Help from the Cabletron Systems Global Call Center .......................1-5

Firmware Versions Supported.....................................................................................1-6

Chapter 2 The 9A128-01 Module View

Viewing Module Information......................................................................................2-2

Front Panel Information........................................................................................ 2-2

Menu Structure....................................................................................................... 2-4

Port Status Displays............................................................................................... 2-8

Selecting a Port Status View.......................................................................... 2-9

Bridge Port Status Displays........................................................................... 2-9

Bridge Port Status Color Codes........................................................... 2-10

The FDDI Port Status Displays................................................................... 2-10

FDDI Port Status Color Codes............................................................. 2-12

The Chassis Manager Window.......................................................................... 2-12

Viewing Hardware Types ................................................................................... 2-13

Device Type ...................................................................................................2-13

Module Type.................................................................................................. 2-13

Viewing I/F Summary Information.................................................................. 2-14

Interface Performance Statistics/Bar Graphs........................................... 2-15

Interface Statistics Window......................................................................... 2-17

Making Sense of Interface Statistics.................................................... 2-19

Using the Find Source Address Feature ...........................................................2-19

Managing the Hub...................................................................................................... 2-20

Setting the Device Date and Time .....................................................................2-20

Enabling and Disabling Ports ............................................................................ 2-21

Bridge Ports ................................................................................................... 2-21

Module Ports................................................................................................. 2-22

Chapter 3 ATM Conﬁguration

Accessing the ATM Connections Window ................................................................ 3-1

Contents

Conﬁguring Connections............................................................................................. 3-4

Adding a New Connection...................................................................................3-4

Deleting a Connection........................................................................................... 3-5

Chapter 4 FDDI Management

Conﬁguration................................................................................................................. 4-2

Connection Policy .........................................................................................................4-6

Station List...................................................................................................................... 4-8

Stations Panel..........................................................................................................4-9

Performance .................................................................................................................4-10

Chapter 5 Bridging

The Bridge Status Window.......................................................................................... 5-2

Accessing Other Management Options from the

Bridge Status Window ...................................................................................5-3

Conﬁguring Duplex Modes......................................................................................... 5-4

Enabling and Disabling Bridging ...............................................................................5-5

Bridge Statistics .............................................................................................................5-6

Performance Graphs..............................................................................................5-6

Conﬁguring the Bridge Performance Graphs............................................. 5-8

The Bridge Detail Breakdown Window....................................................... 5-8

The Bridge Port Detail Breakdown Window ..............................................5-9

The Interface Statistics Window.........................................................................5-10

Using Source Addressing........................................................................................... 5-12

Setting the Ageing Time...............................................................................5-13

Bridge Spanning Tree..................................................................................................5-14

Conﬁguring the Bridge Spanning Tree Window.............................................5-15

Changing Bridge Spanning Tree Parameters................................................... 5-18

Changing Bridge Priority ............................................................................5-19

Changing the Spanning Tree Algorithm Protocol Type.......................... 5-19

Changing Hello Time................................................................................... 5-19

Changing Max Age Time .............................................................................5-20

Changing Forwarding Delay Time............................................................. 5-20

Changing Port Priority.................................................................................5-20

Changing Path Cost......................................................................................5-21

Filtering Database .......................................................................................................5-21

Conﬁguring the Filtering Database................................................................... 5-25

Altering the Ageing Time ............................................................................5-26

Changing the Type of Entry ........................................................................5-26

Changing the Receive Port ..........................................................................5-26

Changing the Port Filtering Action............................................................ 5-26

Adding or Deleting Individual Entries......................................................5-26

Clearing All Permanent, Static, or Dynamic Entries................................5-27

Index

Chapter 1

Introduction

How to use this guide; getting help; software conventions; related reading; ﬁrmware versions

Welcome to the Cabletron Systems MMAC-Plus™ Remote Management for the 9A128-01™ User’s Guide. We have designed this document to serve as a simple

reference guide for using MMAC-Plus Remote Management for the 9A128-01 FDDI/ATM bridge module. You should read through this guide to fully understand SPECTRUM Element Manager remote management for the 9A128-01.

The 9A128-01 ATM Access Module provides two bridging interfaces which allow you to connect an external ATM network to either one of the two FDDI networks resident on the MMAC-Plus hub’s FNB backplane. External front panel connections are made via a SONET, OC3 ATM interface. The 9A128-01 can be used to aggregate FNB trafﬁc to an ATM backbone, or provide connectivity between ATM workstations and traditional LAN users. The 9A128-01 is an 802.3 LAN Emulation Client (LEC) device and will operate in an 802.3 emulated LAN; see Chapter 6, LEC Administrator, in your SPECTRUM Element Manager Tools Guide for more information.

IETF RFC 1483 — Multi-Protocol Encapsulation over ATM Adaptation Layer 5 — speciﬁes a number of methods for encapsulating LAN trafﬁc for transmission over ATM networks. Current versions of the 9A128-01 ﬁrmware use 802.3 VC-based multiplexing for bridging protocols; the most recent version of ﬁrmware (2.10.13) supports ATM Forum LAN Emulation and UNI 3.0/3.1 SVC signaling; future version will add support for Cabletron’s SecureFast Switching.

Using This Guide

Each chapter in this guide describes one major functionality or a collection of several smaller functionalities supported by the 9A128-01 module. This guide contains information about software functions which are accessed directly from the Module View; for information about functions which are accessed via the MMAC-Plus Chassis View and/or the console window menu bar, consult the

1-1

Introduction

Installing and Using SPECTRUM Element Manager Guide, Using MMAC+ Remote Management, User’s Guide and SPECTRUM Element Manager Tools Guide.

Chapter 1, Introduction, provides a list of related documentation, describes certain software conventions, and shows you how to contact Cabletron Systems’ Global Call Center. A brief description of the 9A128-01 module is also provided.

Chapter 2, The 9A128-01 Module View, describes the visual display of the 9A128-01 and explains how to use the mouse within the Module View; the operation of several device-level management functions — such as changing the port display, enabling and disabling ports, and setting device date and time— is also described here.

Chapter 4, ATM Conﬁguration, describes how to conﬁgure Permanent Virtual Circuits (PVCs) for the ATM interface(s) available on each device’s front panel.

Chapter 5, FDDI Management, describes the Conﬁguration, Connection Policy, Station List, and Performance selections available from the FDDI menu. These windows provide information about each module’s FDDI FNB connections.

Chapter 6, Bridging, provides a comprehensive look at all management options associated with the bridge portion of the 9A128-01, including Bridge Performance Graphs, Spanning Tree, and the Filtering Database.

We assume that you have a general working knowledge of Ethernet, IEEE 802.3, FDDI, ANSI X3T9.5, and ATM Forum type data communications networks and their physical layer components, and that you are familiar with basic bridging and switching concepts.

Software Conventions

The SPECTRUM Element Manager user interface contains a number of elements which are common to most windows and which operate the same regardless of which window they appear in. A brief description of some of the most common elements appears below; note that the information provided here is not repeated in the descriptions of speciﬁc windows and/or functions.

Common Window Fields

Similar descriptive information is displayed in boxes at the top of most windows in SPECTRUM Element Manager, as illustrated in Figure 1-1, below.

Introduction

IP Address

Figure 1-1. Sample Window Showing Group Boxes

Device Name

Location

MAC Address

Device Name

Displays the user-deﬁned name of the device. The device name can be changed via the System Group window; see the Generic SNMP User’s Guide for details.

IP Address

Displays the device’s IP (Internet Protocol) Address; this will be the IP address used to deﬁne the device icon. IP addresses are assigned via Local Management; they cannot be changed via SPECTRUM Element Manager.

Software Conventions 1-3

Introduction

Using Buttons

Location

Displays the user-deﬁned location of the device. The location is entered through the System Group window; see the Generic SNMP User’s Guide for details.

MAC Address

Displays the manufacturer-set MAC address of the channel through which SPECTRUM Element Manager is communicating with the device. MAC addresses are factory-set and cannot be altered.

The button that appears at the bottom of most windows allows you to exit a window and terminate any unsaved changes you have made. You may also have to use this button to close a window after you have made any necessary changes and set them by clicking on an , , or button.

An , , or button appears in windows that have conﬁgurable values; it allows you to conﬁrm and SET changes you have made to those values. In some windows, you may have to use this button to conﬁrm each individual set; in other windows, you can set several values at once and conﬁrm the sets with one click on the button.

The button brings up a Help text box with information speciﬁc to the current window. For more information concerning Help buttons, see Getting Help, below.

The command buttons, for example , call up a menu listing the windows, screens, or commands available for that topic.

Any menu topic followed by ... (three dots) — for example Statistics... — calls up a window or screen associated with that topic.

Getting Help

This section describes two different methods of getting help for questions or concerns you may have while using SPECTRUM Element Manager.

Using On-line Help

You can use the buttons to obtain information speciﬁc to a particular window. When you click on a Help button, a window will appear which contains context-sensitive on-screen documentation that will assist you in the use of the windows and their associated command and menu options. Note that if a Help button is grayed out, on-line help has not yet been implemented for the associated window.

1-4 Getting Help

From the Help menu accessed from the Module View window menu bar, you can access on-line Help speciﬁc to the Module View window, as well as bring up the Chassis Manager window for reference. Refer to Chapter 2 for information on the Module View and Chassis Manager windows.

All of the SPECTRUM Element Manager help windows use the standard Microsoft

NOTE

Windows help facility; if you are unfamiliar with this feature of Windows, you can select Help —>How to Use Help from the console window menu bar, or consult your Microsoft Windows User’s Guide.

Getting Help from the Cabletron Systems Global Call Center

If you need technical support related to SPECTRUM Element Manager, or if you have any questions, comments, or suggestions related to this manual or any of our products, please feel free to contact the Cabletron Systems Global Call Center via one of the following methods:

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

Eastern Standard Time at (603) 332-9400.

Introduction

By mail: Cabletron Systems, Inc.

PO Box 5005 Rochester, NH 03866-5005

By Internet mail: support@ctron.com

FTP: ftp.ctron.com (134.141.197.25)

By BBS: (603) 335-3358

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

For additional information about Cabletron Systems products, visit our World Wide Web site: http://www.cabletron.com/. For technical support, select Service and Support.

Getting Help 1-5

Introduction

Firmware V ersions Supported

SPECTRUM Element Manager support for the 9A128-01 module has been tested against ﬁrmware versions up to 2.10.13. If you have an earlier version of ﬁrmware and experience problems, contact Cabletron Systems Global Call Center for upgrade information.

As a general rule, ﬁrmware versions for new products are liable to change rapidly; contact

NOTE

Cabletron Systems Global Call Center for upgrade information for the latest customer release of ﬁrmware.

1-6 Firmware V ersions Supported

Chapter 2

The 9A128-01 Module View

Information displayed in the Module View window; the Chassis Manager window; hub management functions

The 9A128-01 Module View window is the main screen that immediately informs you of the current conﬁguration of your 9A128-01 via a graphical display of the two bridge ports and the FDDI A and B ports which provide connectivity to the FNB backplane. (The Module View does not currently provide a display which reﬂects the status of the front panel ATM ports.) The Module View window serves as a single point of access to all other 9A128-01 windows and screens, which are discussed at length in the following chapters.

NOTE

To access the 9A128-01 Module View window, you can either double-click on the appropriate device icon (as illustrated in Figure 2-1, below), or use the following menu or toolbar options:

Figure 2-1. 9A128-01 Icon

1. Using the mouse, click on the 9A128-01 icon to be monitored. The icon will be highlighted. (Note that all MMAC-Plus devices share an icon.)

2. Select M from the toolbar; the Module View window will appear.

To model your 9A128-01 ATM Access Module as an individual device, you must select Chassis Manager mode from the window that appears when you launch the icon. Refer to your Using MMAC-Plus Remote Management Guide for information on how to access the module view from the MMAC-Plus Chassis View.

anage —> Node from the primary window menu bar, or select

2-1

The 9A128-01 Module View

Viewing Module Information

The 9A128-01 Module View window (Figure 2-2) provides a graphic representation of the 9A128-01, including a color-coded port display which immediately informs you of the current conﬁguration and status of each port.

FDDI Port Status:

Ports 1 and 2 are the A and B port connections to the FNB FDDI backplane.

Bridge Port Status:

Port 1 = FDDI Backplane interface Port 2 = Front Panel ATM interface

Figure 2-2. 9A128-01 Module View Window

By clicking in designated areas of the device graphical display (as detailed later in this chapter), or by using the menu bar at the top of the Module View window, you can access all of the menus that lead to more detailed device and port information.

When you move the mouse cursor over a management “hot spot,” the cursor icon will

TIP

change into a hand symbol to indicate that clicking in the current location will bring up a management option.

Front Panel Information

In addition to the main interface display, the Module View window provides the following device information:

2-2 Viewing Module Information

The 9A128-01 Module View

The Module View window title displays the device’s IP (Internet Protocol) Address; this will be the IP address you have used to create the 9A128-01 module in the Chassis Setup window, or the IP address used to create the device icon. IP addresses are assigned via Local Management, and cannot be changed via SPECTRUM Element Manager. Note that although each interface on the 9A128-01 module has its own MAC, or physical, address, only a single IP address is assigned.

Connection Status

This color-coded area indicates the current state of communication between SPECTRUM Element Manager and the 9A128-01.

• Green indicates the 9A128-01 is responding to device polls (valid connection).

• Magenta indicates that the 9A128-01 is in a temporary stand-by mode while it responds to a physical change in the hub (a board is inserted or removed or a board’s FNB connection has been reconﬁgured); note that board and port menus are inactive during this stand-by state.

• Blue indicates an unknown contact status – polling has not yet been established with the 9A128-01.

• Red indicates the 9A128-01 is not responding to device polls (device is off line, or device polling has failed across the network for some other reason).

UpTime

The amount of time, in a days hh:mm:ss format, that the 9A128-01 has been running since the last start-up.

Port Status

Indicates the Port Status display selection currently in effect for the FDDI port display. The default port status view is connection status; if you have not changed the port status selection since launching the Module View window, this ﬁeld will display Default. For more information about changing the port status display, see

Selecting a Port Status View on page 2-9.

MAC

The physical layer address assigned to the interface through which SPECTRUM Element Manager is communicating with the device. Note that each interface on the 9A128-01 module has its own MAC address; these addresses are hard-coded in the device, and are not conﬁgurable.

Boot Prom

The revision of BOOT PROM installed in the 9A128-01.

Firmware

The revision of device ﬁrmware stored in the 9A128-01’s FLASH PROMs.

Viewing Module Information 2-3

The 9A128-01 Module View

Time

The current time, in a 24-hour hh:mm:ss format, set in the 9A128-01’s internal clock.

Date

The current date, in an mm/dd/yy format, set in the 9A128-01’s internal clock.

You can set the date and time by using the Edit Device Date and Edit Device Time

NOTE

options on the Device menu; see Setting Device Date and Time, page 2-20, for details.

Menu Structure

By clicking on various areas of the 9A128-01 Module View display, you can access menus which provide access to FDDI, ATM, MMAC-Plus chassis and bridging conﬁguration and performance information, as well as utility applications and general device management functions. The following illustration displays the menu structure and indicates how to use the mouse to access the various menus:

2-4 Viewing Module Information

The 9A128-01 Module View

Figure 2-3. 9A128-01 Module View Menu Structure

The Device Menu

From the Device Menu at the Module View window menu bar, you can access the following selections:

• Device Type..., which displays a window containing a description of the device being modeled: 9A128-01, ATM/FDDI Bridge, with 1 ATM and 1 FNB connection

• Edit Device Time and Edit Device Date, which allow you to set the 9A128-01’s internal clock.

• System Group..., which allows you to manage the 9A128-01 via SNMP MIB II. Refer to the Generic SNMP User’s Guide for further information.

• I/F Summary, which lets you view statistics (displayed both graphically and numerically) for the trafﬁc processed by each network interface on your device, and provides access to some SNMP MIB-II windows. See Viewing I/F Summary Information, page 2-14, for details.

Viewing Module Information 2-5

The 9A128-01 Module View

• ATM Connections, which launches the window that allows you to view and

conﬁgure Permanent Virtual Circuits (PVCs) for the 9A128-01’s front panel ATM interfaces. For more information about conﬁguring PVCs, see Chapter 3, ATM Conﬁguration.

The next four menu options will appear depending on the conﬁguration and services

NOTE

available in the MMAC-Plus chassis that this module is inserted within; for more information on management operations directly related to the monitoring and control of the MMAC-Plus Chassis, see the Cabletron Systems Using MMAC-Plus Remote Management Guide.

• Power Supply... which launches the Power Supply window that displays

information about each power supply and it’s associated cooling fan in your MMAC-Plus chassis. You can also control the operation of the cooling fan from this window; see the Cabletron Systems Using MMAC-Plus Remote Management Guide for more information.

• Chassis Power Detail

... which launches the Chassis Power Detail window that

displays information about the power subsystem of the MMAC-Plus chassis; see the Cabletron Systems Using MMAC-Plus Remote Management Guide for more information.

• Environment View... which launches the Environment View window which

provides information of the environmental conditions associated with the modules in the MMAC-Plus chassis; see the Cabletron Systems Using MMAC-Plus Remote Management Guide for more information.

• FNB Conﬁguration (Non-Mux)... which launches the FNB Conﬁguration

window that displays and allows you to conﬁgure your FNB’s current conﬁguration; see the Cabletron Systems Using MMAC-Plus Remote Management Guide for more information.

• Bridge Status..., which opens a window that provides an overview of bridging

information for each port, and allows you to access all other bridge-related options. Refer to Chapter 5, Bridging, for more information.

• Find Source Address..., which opens a window that allows you to search the

9A128-01’s 802.1d Filtering Database to determine which bridging interface a speciﬁed source MAC address is communicating through. If the MAC address is detected as communicating through the bridge, the port display will ﬂash to indicate the bridge interface of interest.

• Exit, which closes the 9A128-01 Module View window.

The Port Status Menu

The Port Status menu allows you to select the status information that will be displayed in the Bridge and FDDI port text boxes in the Module View window:

• Bridge allows you to select one of ﬁve status type displays for the bridge ports:

I/F Mapping, I/F Speed, I/F Type, Bridge Port State, or Bridge Mapping.

2-6 Viewing Module Information

NOTE

The 9A128-01 Module View

• Connect will display the each FDDI port’s connection status.

• LER Estimate will display the cumulative long term average of the bit error rate for each FDDI port, which represents the quality of the physical link.

When you select the LER Estimate port status display, this port status display will be reﬂected in both the bridge and FDDI ports. The FDDI ports will display the LER Estimate while the bridge ports will display the Percent Errors.

For more information on the bridge and FDDI port display options available via this menu, see Selecting a Port Status View, page 2-9.

The FDDI Menu

The FDDI menu provides the following options, which allow you to monitor and manage the 9A128-01’s connection to the FNB FDDI backplane:

• Conﬁguration

• Connection Policy

• Station List

• Performance

Refer to Chapter 4, FDDI Management, for details on these options.

The Utilities Menu

The Utilities menu provides access to the MIBTools utility, which provides direct access to the 9A128-01’s MIB information. The MIB Tools selection is also available from the Tools menu at the top of the SPECTRUM Element Manager primary window; refer to your Tools Guide, included in this package, for a thorough explanation of the MIB Tools utility.

The Help Menu

The Help Menu has three selections:

• M

IBs Supported, which brings up the Chassis Manager window, described on

page 2-12.

• Chassis Manager Help, which brings up a help window with information speciﬁcally related to using the Chassis Manager and Module View windows.

• About Chassis Manager..., which brings up a version window for the Chassis Manager application in use.

The Board Menus

The Board menu labeled Bridge provides access to most of the available bridging-related selections, which are also available from the Bridge Status window:

Viewing Module Information 2-7

The 9A128-01 Module View

• Module Type..., which brings up a window containing a description of the 9A128-01 board; see Viewing Hardware Types, page 2-13.

• Performance Graph..., which visually displays performance between all bridging ports on the 9A128-01; see Chapter 5, Bridging.

• Spanning Tree..., which allows you to set bridge parameters when it is operating using the Spanning Tree Algorithm (STA) – the method that bridges use to decide the controlling (root) bridge when two or more bridges are installed in parallel; see Chapter 5, Bridging, for more information.

• Filtering Database..., which allows you to monitor and manage bridge forwarding and ﬁltering across each port of the 9A128-01; see Chapter 5 for details.

• Duplex Modes..., which allows you to set Duplex Mode operation for standard Ethernet interfaces on your 2E42; see Chapter 5, Bridging.

• Enable/Disable Bridge, which enables or disables bridging across the entire 9A128-01.

The menu accessed from the FNB label provides only the Module Type option.

The Port Menus

The port menu selections vary according to the port’s functionality. The menu for the two bridging ports offers the following selections:

• Performance Graph..., which brings up windows that visually display bridging performance at the selected port; see Chapter 5, Bridging, for details.

• Source Addressing..., which launches a window displaying the MAC addresses of all devices communicating through the selected bridging interface; see Chapter 5, Bridging, for details.

• I/F Statistics..., which launches a Statistics window, which displays interface statistics for the port; see Chapter 5, Bridging for details.

• Enable/Disable, which administratively turns the selected bridging port on or off; see Enabling and Disabling Ports, page 2-21, for more information.

The FDDI port menus offer only two selections: Enable Port, and Disable Port. Note that you can enable and disable the A and B ports separately, if you wish; disabling only one of the pair, however, will cause a wrap condition.

Port Status Displays

When you open the Module View, each bridge port on the 9A128-01 will by default display the bridge port state (deﬁned below); to change the bridge port status display, select the Bridge option on the Port Status menu, and drag right to select one of the available bridge port status display options; as described below.

2-8 Viewing Module Information

Initially, each FDDI port on the 9A128-01 will by default display its current connection status (deﬁned below); to change this status display, select the Connect or LER Estimate option on the Port Status menu, as described in the following section. Note that the status display of the bridge ports will remain the same when you change the port status display of the FDDI Ports to Connect; however, when you change the port status display of the FDDI Ports to LER Estimate, the bridge ports will display Percent Errors.

Selecting a Port Status View

To change the status view of your ports:

1. Click on Port Status on the menu bar at the top of the Module View window; a

menu will appear.

2. Drag down to Bridge, and to the right to select the bridge port status

information you want to display. The bridge port text boxes will display the appropriate status information.

and/or

The 9A128-01 Module View

Drag down to select the FDDI port status information you want to display. The FDDI port text boxes will display the appropriate status information.

Bridge Port Status Displays

You can choose from 5 different bridge port display options:

I/F Mapping

If you choose the I/F M number (ifIndex) associated with each bridge port on the 9A128-01 module.

I/F Speed

If you choose the I/F Speed mode, the interface boxes will display the bandwidth of each individual bridge port on the 9A128-01 module; e.g., 100 Mbits/sec.

I/F Type

If you choose the I/F Type mode, the interface boxes will display the interface type of each bridge port on the 9A128-01 module; e.g., Eth (Ethernet).

The Bridge Port State and Bridge Mapping status modes will not be supported for devices

NOTE

which have been conﬁgured for SecureFast switching.

Firmware versions 2.10.13 and earlier do not support the ability to select SecureFast switching; if you have a later version of ﬁrmware, check your hardware manual to see if your version of ﬁrmware supports this feature. The toggle from traditional bridging to SecureFast switching is performed via Local Management; see your Local Management documentation for details.

apping mode, the interface boxes will display the interface

Viewing Module Information 2-9

The 9A128-01 Module View

Bridge Port State

If you choose the Bridge Port State mode, a bridge port is considered:

• FWD (Forwarding) if the port is on-line and forwarding packets across the 9A128-01 from one network segment to another.

• DIS (Disabled) if bridging at the port has been disabled by management; no trafﬁc can be received or forwarded on this port, including conﬁguration information for the bridged topology.

• LRN (Learning) if the Forwarding database is being created, or the Spanning Tree Algorithm is being executed because of a network topology change. The port is monitoring network trafﬁc, and learning network addresses.

• LIS (Listening) if the port 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.

• BLK (Blocking) if the port is on-line, but ﬁltering trafﬁc from going across the 9A128-01 from one network segment to another. Bridge topology information will be forwarded by the port.

• BRK (Broken) if the physical interface has malfunctioned.

Bridge Mapping

If you have selected the Bridge Mapping status mode, the port display will alter to show the physical interface index (ifIndex) associated with each front panel bridge port.

Bridge Port Status Color Codes

The Bridge Port Status Display options will use the following color code, regardless of which bridge port status option is selected: green = forwarding, blue = disabled, magenta = learning and listening, orange = blocking, and red = broken.

The FDDI Port Status Displays

When you open the Module View, each FDDI port on the 9A128-01 will by default display its current connection status (deﬁned below); to change this status display, select one of the options on the Port Status menu, as described in the previous section.

2-10 Viewing Module Information

The 9A128-01 Module View

FDDI port status view options are:

Connection State

The Connection State port display form indicates the port’s connection status:

• CON (connecting): the port is trying to establish a link, but has not yet been

successful. Ports which are not connected and which have not been disabled by management will display this status.

• ACT (active): the port has been enabled by management and has successfully

established a link.

• SBY (standby): the port has a physical link, but the SMT Connection Policy is

prohibiting a logical connection to the ring because the attempted connection is illegal. FDDI protocol always forbids connecting two master ports; all other connections are theoretically legal, although some are not desirable. You can view the SMT Connection Policy by selecting the SMT Connection Policy option from the FDDI menu; for more information, see Chapter 4, FDDI Management.

• DIS (disabled): the port has been disabled by management; note that this

status does not indicate whether or not there is a physical link connected to the port.

LER Estimate

The Link Error Rate (LER) Estimate port display form displays a cumulative long term average of the bit error rate, which represents the quality of the physical link. It is computed when the port is connected and every 10 seconds thereafter. The value of the LER Estimate can range from 10

-4

to 10

-15

, but it is always displayed as the absolute value of the exponent; for example, if the port’s LER Estimate is computed to be 10-5, the value displayed in the Port Status box will be 5.0, which represents an actual rate of 1,250 bit errors per second. The lower LER Estimate numbers represent the highest bit error rates, as summarized in the ﬁgure below.

.000000125

.00000125

.0000125

.000125

per

.00125

.0125

.125

1.25

12.5 125

1250

12500

456789101112131415

Reported LER Estimate

Bit Errors

Second

Figure 2-4. LER Estimate Values

Viewing Module Information 2-11

The 9A128-01 Module View

The bridge ports will display Percent Errors when the LER Estimate port status display

NOTE

is selected. Percent Errors are calculated by the following formula: (ErrorPkts /(ErrorPkts+ValidPkts))*100, where Error Pkts = IfInErrors + IfOutErrors + ifInDiscards + ifOutDiscards + ifInUnknownProtos and ValidPkts = ifInUcastPkts + ifOutUcastPkts + ifInNUcastPkts + ifOutNUcastPkts.

FDDI Port Status Color Codes

FDDI port status color codes always reﬂect the port’s connection status, even when the LER Estimate port display form has been selected. Under that color coding scheme:

• CON (Connecting) = yellow

• ACT (Active) = green

• SBY (Standby) = red

• DIS (Disabled) = red

The Chassis Manager Window

Like most networking devices, Cabletron’s devices draw their functionality from a collection of proprietary MIBs and IETF RFCs. In addition, Cabletron’s newer intelligent devices – like the 9A128-01 – organize their MIB data into a series of “components.” A MIB component is a logical grouping of MIB data, and each group controls a deﬁned set of objects. For example, 9A128-01 bridging information is organized into its own component; FDDI and ATM information resides in two separate components, one for each of the 9A128-01’s interfaces. Note, too, that there is no one-to-one correspondence between MIBs and MIB components; a single MIB component might contain objects from several different proprietary MIBs and RFCs.

The Chassis Manager window, Figure 2-5, is a read-only window that displays the MIBs and the MIB components — and, therefore, the functionality — supported by the currently monitored device.

To view the Chassis Manager window:

1. Click on Help on the far right of the menu bar at the top of the chassis manager window.

2. Drag down to MIBs Supported, and release.

2-12 Viewing Module Information

The MIBs which provide the 9A128-01’s functionality — both proprietary MIBs and IETF RFCs — are listed here

MIB Components are listed here; remember, there’s no one-to-one correspondence between MIBs and MIB Components

Figure 2-5. Chassis Manager Window

Viewing Hardware Types

In addition to the graphical displays described above, menu options provide speciﬁc information about the physical characteristics of ports in the 9A128-01, as well as information about the 9A128-01 module itself.

The 9A128-01 Module View

Device T ype

Module Type

Choosing the Device Type option on the Device menu brings up a window that describes the management device being modeled:

Figure 2-6. Device Type Window

From the Board menus labeled Bridge and FNB on the 9A128-01 Module View window, you can view a description of the Module type: for the 9A128-01, the same information provided in the Device Type window.

To view the Module type:

1. Click on the Bridge or FNB Board label. The Board menu will appear.

2. Drag down to Module Type.... The Module Type text box, Figure 2-7, will

appear.

Viewing Module Information 2-13

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