Cabletron Systems SEHI-22/24 User manual

Portable Management Application
for the
SEHI-22/24 and SEHI-32/34
User’s Guide
®
The Complete Networking Solution

i
Notice
Cabletron Systems reserves the right to make changes in specifications and other information
contained in this document without prior notice. The reader should in all cases consult Cabletron
Systems to determine whether any such changes have been made.
The hardware, firmware, or software described in this manual is subject to change without notice.
IN NO EVENT SHALL CABLETRON SYSTEMS BE LIABLE FOR ANY INCIDENTAL, INDIRECT,
SPECIAL, OR CONSEQUENTIAL DAMAGES WHATSOEVER (INCLUDING BUT NOT LIMITED
TO LOST PROFITS) ARISING OUT OF OR RELATED TO THIS MANUAL OR THE INFORMATION
CONTAINED IN IT, EVEN IF CABLETRON SYSTEMS HAS BEEN ADVISED OF, KNOWN, OR
SHOULD HAVE KNOWN, THE POSSIBILITY OF SUCH DAMAGES.
Virus Disclaimer
Cabletron has tested its software with current virus checking technologies. However, because no anti-
virus system is 100% reliable, we strongly caution you to write protect and then verify that the
Licensed Software, prior to installing it, is virus-free with an anti-virus system in which you have
confidence.
Cabletron Systems makes no representations or warranties to the effect that the Licensed Software is
virus-free.
Copyright © 1996 by Cabletron Systems, Inc. All rights reserved.
Printed in the United States of America.
Order Number: 9030954-E9 October 1996
Cabletron Systems, Inc.
P.O. Box 5005
Rochester, NH 03866-5005
SPECTRUM , MiniMMAC , FNB , Multi Media Access Center , and DNI are registered trademarks,
and Portable Management Application , IRM , IRM2 , IRM3 , IRBM , ESXMIM , ETSMIM , EMME ,
EMM-E6 , ETWMIM , FDMMIM , FDCMIM , MicroMMAC , MRXI , MRXI-24 , NB20E , NB25E , NB30 ,
NB35E , NBR-620 , SEHI , TRBMIM , TRMM , TRMM-2 , TRMM-4 , TRMMIM , TRXI , Media Interface
Module , MIM , and Flexible Network Bus are trademarks of Cabletron Systems, Inc.
UNIX and OPENLOOK are trademarks of Unix System Laboratories, Inc. OSF/Motif and Motif are
trademarks of the Open Software Foundation, Inc. X Window System is a trademark of X Consortium,
Inc. Ethernet and XNS are trademarks of Xerox Corporation. Apple and AppleTalk are registered
trademarks of Apple Computer, Inc. Banyan is a registered trademark of Banyan Systems, Inc.
DECnet is a registered trademark of Digital Equipment Corporation. Novell is a registered trademark
of Novell, Inc. CompuServe is a registered trademark of CompuServe. Sun Microsystems is a
registered trademark, and Sun , SunNet , and OpenWindows are trademarks of Sun Microsystems,
Inc.

ii
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iii
Contents
Chapter 1 Introduction to SPMA
for the SEHI-22/24 and SEHI-32/34
Using the SEHI User’s Guide...................................................................................... 1-1
What’s NOT in the SEHI User’s Guide . . . ........................................................ 1-3
Conventions................................................................................................................... 1-3
Screen Displays ...................................................................................................... 1-3
Using the Mouse .................................................................................................... 1-5
Getting Help .................................................................................................................. 1-6
SEHI Firmware.............................................................................................................. 1-7
Chapter 2 Using the SEHI HubView
Using the Hub View ..................................................................................................... 2-1
Navigating Through the Hub View .................................................................... 2-2
Hub View Front Panel........................................................................................... 2-2
Using the Mouse in the Hub View Ports Display ............................................. 2-5
Hub View Port Color Codes................................................................................. 2-6
Monitoring Hub Performance..................................................................................... 2-7
Port Display Form.................................................................................................. 2-8
Checking Device Status and Updating Front Panel Info ............................... 2-10
Checking Module Status..................................................................................... 2-11
Checking Repeater Status................................................................................... 2-12
Checking Port Status ........................................................................................... 2-13
Checking Statistics............................................................................................... 2-15
General/Error Statistics............................................................................... 2-16
The SEHI Error Priority Scheme................................................................. 2-18
Protocols/Frames Statistics......................................................................... 2-19
Viewing the Port Source Address List .............................................................. 2-19
Managing the Hub...................................................................................................... 2-20
Setting the Polling Intervals ............................................................................... 2-21
Enabling/Disabling Ports................................................................................... 2-22
Chapter 3 Link/SegTraps
What is a Segmentation Trap?..................................................................................... 3-1
What is a Link Trap?..................................................................................................... 3-2
Enabling and Disabling Link/Seg Traps ................................................................... 3-2
Configuring Link/Seg Traps for the Repeater................................................... 3-4
Viewing and Configuring Link/Seg Traps for Hub Modules......................... 3-4

Contents
iv
Viewing and Configuring Link/Seg Traps for Ports ........................................3-5
Chapter 4 Repeater Redundancy
Setting Network Circuit Redundancy........................................................................4-1
Configuring a Redundant Circuit........................................................................4-2
Monitoring Redundancy..............................................................................................4-5
Chapter 5 Source Addressing
Displaying the Source Address List............................................................................5-1
Setting the Ageing Time........................................................................................5-4
Setting the Hash Type...................................................................................................5-4
Locking Source Addresses ...........................................................................................5-5
Source Address Locking on Older Devices........................................................5-6
Configuring Source Address Traps.............................................................................5-7
Device-level Traps..................................................................................................5-8
Module- and Port-level Traps...............................................................................5-8
Finding a Source Address .......................................................................................... 5-11
Chapter 6 Security
What is LANVIEWsecure?...........................................................................................6-2
The Newest LANVIEWsecure Features..............................................................6-4
Security on Non-LANVIEWsecure Hubs...........................................................6-5
Configuring Security.....................................................................................................6-6
Resetting Learned Addresses.............................................................................6-10
Tips for Successfully Implementing Eavesdropper Protection ..................... 6-11
Enabling Security and Traps......................................................................................6-12
Repeater-level Security and Traps .....................................................................6-13
Hub-level Security and Traps.............................................................................6-14
Port-level Security and Traps .............................................................................6-15
Appendix A SEHI MIB Structure
IETF MIB Support ........................................................................................................A-1
SEHI MIB Structure......................................................................................................A-1
A Brief Word About MIB Components and Community Names ..................A-2
Index

1-1
Chapter 1
Introduction to SPMA
for the SEHI-22/24 and SEHI-32/34
How to use the SEHI User’s Guide; manual conventions; contacting Cabletron Technical Support;
SEHI firmware versions supported by SPMA
The SEHI-22/24 and SEHI-32/34 are intelligent repeating hubs that provide front
panel ports for network connections and a rear-panel HUBStack Interconnect Bus
port for stackable connections. Both devices fully conform to the IEEE 802.3
Repeater, AUI, and 10BASE-T specifications, and provide the flexibility to connect
networks using a variety of media via RJ45 twisted pair, SMA and ST fiber optic,
thin coax, and AUI EPIM modules. All of the models are functionally identical;
the only difference among them is the configuration of front panel ports: the
SEHI-22 has 12 built-in RJ45 ports and one slot for an EPIM module; the SEHI-24
has 24 built-in RJ45 ports and two EPIM slots; the SEHI-32 has one 50-pin Champ
connector providing 12 twisted pair segments and one EPIM slot; and the SEHI-
34 has two 50-pin Champ connectors providing 24 twisted pair segments and two
EPIM slots. You can stack as many as four of Cabletron’s SEH non-intelligent
hubs with one SEHI and the entire stack is counted as only one repeater hop. All
SEHI models will transmit re-timed data packets, regenerate preamble, extend
fragments, arbitrate collisions, and automatically partition problem segments.
Using the SEHI User’s Guide
Your SPECTRUM Portable Management Application (SPMA) for the SEHI-22/24
and SEHI-32/34 consists of a number of different applications, each of which
provides a portion of the overall management functionality. Each of these
NOTE
Since the devices covered by this User’s Guide are functionally identical, they will be
jointly referred to throughout the text as the SEHI. Likewise, since the only differences in
the windows for each device will be the device name (SEHI-22, SEHI-24, etc.) and the
number of ports displayed, only the SEHI-24 windows will be shown.

Introduction to SPMA for the SEHI-22/24 and SEHI-32/34
1-2 Using the SEHI User’s Guide
applications can be accessed from the icon menu (if you are using a management
platform) and from the command line (if you are running in stand-alone mode);
in addition, several applications can also be accessed from within the Hub View, a
graphical display of the SEHI and its ports.
The SEHI 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
SEHI 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 described 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 network management concepts:
• Chapter 1, Introduction to SPMA for the SEHI-22/24 and SEHI-32/34 ,
describes the SEHI User’s Guide and the conventions used in this and other
SPMA manuals, explains where to find information about the SEHI, and tells
you how to contact Cabletron Systems Technical Support.
• Chapter 2, Using the SEHI 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 available only from within the Hub View (changing the
Hub View display, opening menus and windows, enabling and disabling
ports, checking device and port status, and so on) are also described.
• Chapter 3, Link/Seg Traps , describes how to configure link and segmentation
traps to suit your management needs. You can access the Link/Seg Traps
application from the icon menu, the Hub View, or the command line.
• Chapter 4, Redundancy , describes how to configure redundant circuits to keep
your network connections up and running in the event of a single port’s
failure. You can access the Redundancy application from the icon menu, the
Hub View, or the command line.
• Chapter 5, Source Address , describes how to display the Source Address List,
how to set the ageing time, and how to configure source address traps; it also
discusses the effects of source address locking. You can access the Source
Address application from the icon menu, the Hub View, or the command line.
• Chapter 6, Security , describes how to configure intruder protection for all
MIMs installed in the SEHI-controlled hubstack, and how to configure
eavesdropper protection for any installed LANVIEW
SECURE
hubs. You can
access the Security application from the icon menu, the Hub View, or the
command line.
• Appendix A, SEHI MIB Components , lists the IETF MIBs supported by the
SEHI, and describes their arrangement in a series of MIB components. A
description of the objects controlled by each component is also included.

Conventions 1-3
Introduction to SPMA for the SEHI-22/24 and SEHI-32/34
What’s NOT in the SEHI User’s Guide . . .
The following standard SPMA tools are available through the SEHI module and
are explained in the SPECTRUM Portable Management Application Tools Guide :
• Charts, Graphs and Meters
• MAC Address Locator
• Community Names
• MIB I, II
• MIBTree
• TFTP Download
• Trap Table
The Charts, Graphs and Meters application is accessible from the Hub View and
the command line; the MAC Address Locator application is accessible from the
platform console window Tools menu; the rest of the tool applications are
available only from the icon menu 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 SEHI in stand-
alone mode — that is, without benefit of a specific network management 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
The family of SPECTRUM Portable Management Applications 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
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 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.

Introduction to SPMA for the SEHI-22/24 and SEHI-32/34
1-4 Conventions
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.
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.
Use the scroll bars
provided to choose
what to display in a
window that’s been
resized
Click here to
display footer
message history

Conventions 1-5
Introduction to SPMA for the SEHI-22/24 and SEHI-32/34
Figure 1-2. The History Window
Using the Mouse
The UNIX mouse has three buttons. Procedures within the SPMA document set
refer to these buttons as follows:
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.
Button 1
Button 2
Button 3

Introduction to SPMA for the SEHI-22/24 and SEHI-32/34
1-6 Getting Help
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 [phone].
By mail: Cabletron Systems, Inc.
PO Box 5005
Rochester, NH 03866-5005
By CompuServe
®
: GO CTRON from any ! prompt
By Internet mail: [email protected]
FTP ctron.com (134.141.197.25)
Login anonymous
Password your email address
By BBS: [phone]
Modem Setting 8N1: 8 data bits, 1 stop bit, No parity

SEHI Firmware 1-7
Introduction to SPMA for the SEHI-22/24 and SEHI-32/34
For additional information about Cabletron Systems products, visit our World
Wide Web site: http://www.cabletron.com/
SEHI Firmware
SPMA for the SEHI has been tested against firmware versions 1.10.04 and 1.05.03;
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 SEHI-22/24 and SEHI-32/34
1-8 SEHI Firmware

2-1
Chapter 2
Using the SEHI HubView
Navigating through the HubView, monitoring hub performance; managing the hub
The heart of the SPECTRUM Portable Management Application (SPMA) for the
SEHI is the Hub View, a graphical interface that gives you access to many of the
functions that provide control over the device.
Using the HubView
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 SEHI icon and accessing the icon menu can be
found in the appropriate Installing and Using SPECTRUM for... guide. If you are
running the SEHI module in a stand-alone mode, type the following at the
command line:
spmarun hubstack <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.
NOTE The spmarun script invoked first in the above command temporarily sets the environment
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 there is a hostname mapped to your SEHI’s IP address, you can use <hostname> in
place of <IP address> to launch the Hub 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.

Using the SEHI Hub View
2-2 Using the Hub View
NavigatingThrough the HubView
Within the Hub View (Figure 2-1), you can click mouse buttons in different areas
of the window to access various menus and initiate certain management tasks.
The following sections describe the information displayed in the Hub View Front
Panel and how to use the mouse in the Hub View Ports Display.
Figure 2-1. SEHI Hub View
HubView Front Panel
In addition to the graphical display of the modules, the Hub View gives you
device level summary information. The following Front Panel information
appears below 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 means a valid connection.
• Blue means that SPMAis 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.
Front Panel
Device summary information

Using the Hub View 2-3
Using the SEHI Hub View
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.
Date andTime
The date and time are taken from the device’s internal clock.
Device Name
A text field that you can use to help identify the device.
Location
A text field that you can use to help identify the device.
IP Address
The device’s Internet Protocol address. You cannot change the SEHI’s IP address
from SPMA.
MAC Address
The device’s factory-set hardware address. The MAC address cannot be changed.
NOTE If you have assigned a device name or location that contains more than 19 characters, only
the last 19 will be displayed in the Hub View. Check the Device Status window for the
complete name and/or location, if necessary.

Using the SEHI Hub View
2-4 Using the Hub View
Clicking on the Device button displays the Device menu, Figure 2-2.
Figure 2-2. SEHI Hub View Device Menu
The Device menu lets you perform the following:
• Open the Device Status window
• Open the Repeater Status window
• Open the Polling Intervals window
• Open the Statistics windows
• Create device-level Pie Charts, Graphs and Meters
• Change the Port Display Form
• Launch the Link/Seg Traps application
• Launch the Redundancy application
• Launch the Source Addressing application
• Launch the Security application.
Note that the Device menu does not provide access to every application which is
available to the SEHI; some information is only available from the Module or 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 stand-alone mode). See Chapter 1,
Introduction to SPMA for the SEHI-22/24 and SEHI-32/34, for a complete list of
applications available to the SEHI and how to access each one.

Using the Hub View 2-5
Using the SEHI Hub View
If you need to call Cabletron’s Technical Support about a problem with the Hub
View application, you’ll need the information provided in the Info window
(Figure 2-3):
Figure 2-3. Hub Information Window
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 HubView Ports Display
Each device in your SEHI-managed HUBStack will have its own ports display in
the Hub View; you can access the available ports displays by using the scroll bar
located on the right side of the Hub View Ports Display window, as illustrated in
Figure 2-4. The illustration below also indicates how to use the mouse to access
the Module and Port menus and functions.
SPMA for the SEHI application
version
SEHIfirmwarerevision,firmware
boot prom version, and
hardware version

Using the SEHI Hub View
2-6 Using the Hub View
Figure 2-4. Mousing Around a Ports Display
HubView Port Color Codes
The Port Status boxes in the Hub View are color coded to indicate the port’s
connection status. The colors are consistent for all Port Display Forms except
Admin Status; the exceptions are noted below.
•Green indicates that the port is active; that is, the port has been enabled by
management, has a valid Link signal (if applicable), and is able to
communicate with the station at the other end of the port’s cable segment.
Note that anAUI or transceiver port will display as active as long as it has been
enabled by management, even if no cable is connected.
ModuleType
Displays the type of
module, or device,
whose ports are
currently being
displayed in the
Ports Display.
Port Display Form
Using the Module or Device menus,
you can change the port display form
shown in the Port Status boxes to
any one of the following:
- Load (% of theoretical maximum)
- Traffic (Pkts/sec)
- Collisions (Colls/sec)
- Errors (Errors/sec, total or by type)
- Frame Sizes (% of total packets)
Module Index
Indicates the module’s position in
the SEHI-managed stack;the SEHI
itself is always #1. Click mouse
button 1 to open the Module Status
window; click mouse button 3 to
display the Module menu.
Port Index
Click mouse button 1 to open
the Port Status window; click
mouse button 3 to display the
Port 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.Port Type displays port
status (ON, OFF, NLK, etc.).Click
mouse button 1 to toggle the port
between enabled and disabled; click
mouse button 3 to display the Port
menu.
Scroll Bar
Use the scroll bar to
rotate through the
portsdisplaysforeach
hub in the SEHI-
managed stack.