Cabletron Systems TRXI-22 Istruzioni per l'installazione e il funzionamento

PN 9030975 Page 1

TRXI LOCAL MANAGEMENT ADDENDUM

This addendum outlines the TRXI’s Ring Security feature and lists its RMON MIB capabilities. Use this

addendum in conjunction with the TRXI User’s Guide.

RING SECURITY SCREEN OVERVIEW

The Ring Security screen allows you to control access to your token ring network.When you enable ring security,

the TRXI stores the MAC address of each station on the token ring network in a secure database or “allowed list.”

Only stations on the allowed list can enter the ring.The TRXI can store up to 250 station MAC addresses on the

allowed list.The TRXI retains the allowed list in its battery-backed Non-Volatile Random Access Memory

(NVRAM).When you power up or reset the TRXI, all MAC addresses will be retained and ring security is

re-enabled automatically.

You can append the allowed list by temporarily disabling ring security, then re-enabling it using the Alarms Only

feature.The TRXI acts as the Ring Security Monitor for the ring and provides security for the entire ring.

Note

:You should enable only one TRXI per ring for Ring Security.

You can select two modes of ring security;Alarm Only and Alarm/Remove. In the Alarm Only mode, new stations

can enter the ring, but a “station added” trap/alarm notiﬁes the Network Management Station (NMS) of the

event.The trap/alarm includes the new station’s MAC address so that the network manager can decide if the new

station should be allowed on the ring.

The Alarm/Remove mode sends a “Remove MAC Frame Command” to new stations attempting to enter the ring,

and a trap/alarm to the NMS informing it of the action taken. If, after three attempts, the station cannot be

removed from the ring, a trap/alarm is sent to the NMS informing it that “the station could not be removed.”

RING SECURITY SCREEN DEFINITIONS

The following section provides a brief explanation of each ﬁeld and command on the Ring Security screen.

Station Address

This ﬁeld lists the MAC address of each station on the ring security allowed list.This ﬁeld can lists up to 250

MAC addresses on 22 local management screens.

Stn Edit

The Station Edit command lets you add or delete stations from the allowed list. Use the Stn Edit command for

single entry edits to the allowed list.

Security Mode

This command lets you set the Security Mode for the ring.You can select the following Security Modes:

•

Disabled

- This is the factory default setting. Use this option to temporarily disable ring security so that

new stations can enter the ring.

•

Alarm Only

- In this mode,new stations can enter the ring,but a “station added”trap/alarm is sent to the

Network Management Station.The“station added”trap message includes the new station’s MAC address

so that the network manager can decide if the new station should be allowed on the ring.

PN 9030975 Page 2

If you temporarily disable ring security to allow new users to enter the ring, you can use the Alarm Only

mode to re-enable ring security. When you select the Alarm Only mode, the TRXI stores the MAC address

of each station on the ring in the allowed list. This saves you from entering MAC addresses one at time

using the Stn Edit command.

•

Alarm/Remove

-This is the highest level of ring security.TheAlarm/Remove mode sends a“Remove MAC

Frame Command”to new stations attempting to enter the ring, and a trap/alarm to the NMS informing it

of the action taken. If, after three attempts the station cannot be removed from the ring, a trap/alarm is

sent to the NMS informing it that “the station could not be removed.”

SAVE/EXECUTE

This command saves all security mode changes to the TRXI’s NVRAM.You must use the SAVE/EXECUTE

command for your changes to take effect.

NEXT_SCREEN

Use this command to scroll to the next screen of the allowed database list.

PREVIOUS_SCREEN

Use this command to scroll back to the previous screen of the allowed database list.

RETURN

Use this command to exit the Ring Security screen and return to the Device Setup screen.

RING SECURITY SCREEN FEATURES

The following sections explain how to use the TRXI’s Ring Security screen features. Ensure that your network

meets the requirements and conditions speciﬁed in the TRXI User’s Guide before you initiate ring security. You

must also set up the TRXI’s SNMP Traps screen to designate which Network Management Stations receive

trap/alarms (refer to the TRXI User’s Guide).This ensures that trap/alarms generated by ring security arrive at

the appropriate destination.

To access the Ring Security screen from the Device Setup screen, use the arrow keys to highlight the Ring

Security option, then press

Return

.The Ring Security Screen shown in Figure 1 appears.To exit the Ring

Security screen, use the arrow keys to highlight the RETURN menu command, then press

Return

Figure 1. Ring Security Screen

TRXI-24 LOCALMANAGEMENT Flash Image Version: X.XX.XX

RING SECURITY

STATION ADDRESS

00-00-00-00-00-00

Stn Edit [00-00-00-00-00-00] [Add] Security Mode [Disabled]

SAVE/EXECUTE NEXT_SCREEN PREVIOUS_SCREEN RETURN

PN 9030975 Page 3

Building the Allowed List

The factory default setting for the Security Mode ﬁeld is

Disabled

. Ensure that the Security Mode is set to

Disabled before you build the allowed list.To build the allowed list:

1. Use the arrow keys to highlight the Security Mode field.

2. Press

Return

to toggle selections (Disabled, Alarm Only, Remove/Alarm). Select the

Alarm Only

option.

3. Use the arrow keys to highlight the SAVE/EXECUTE command.

4. Press

Return

. The TRXI enables ring security and generates the allowed list.

5. To view the allowed list, refresh the Ring Security screen by exiting, then re-entering the screen.

Adding Stations to the Station Address Allowed List

To add stations one at a time to the Station Address allowed list:

1. Use the arrow keys to highlight the Stn Edit field.

2. Press

Return

to clear the field.

3. Enter the MAC address of the station you want to add in XX-XX-XX-XX-XX-XX format. To delete characters

use the

Backspace

key.

4. Use the arrow keys to highlight the Add/Del field.

5. Press

Return

to toggle selections. Select the

Add

option.

6. Use the arrow keys to highlight the SAVE/EXECUTE command.

7. Press

Return

. The station’s MAC address appears on the screen.

Deleting Stations from the Station Address Allowed List

To delete stations from the Station Address allowed list:

1. Use the arrow keys to highlight the Stn Edit field.

2. Press

Return

to clear the field.

3. EntertheMAC address of the stationyouwantto delete in XX-XX-XX-XX-XX-XX format.Todelete characters,

use the

Backspace

key.

4. Use the arrow keys to highlight the Add/Del field.

5. Press

Return

to toggle selections. Select the

Del

option.

6. Use the arrow keys to highlight the SAVE/EXECUTE command.

7. Press

Return

. The station’s MAC address is deleted from the screen.

Note

:You must set ring security to the Alarm/Remove mode to effectively delete a station from the allowed list and

keep it off the ring. If you delete a station from the allowed list while in the Alarm Only mode, the station can

re-enter the ring and its Mac address will reappear in the allowed list.

PN 9030975 Page 4

Changing the Ring Security Mode

To change the Security Mode:

1. Use the arrow keys to highlight the Security Mode field.

2. Press

Return

to toggle selections (Disabled, Alarm Only, Remove/Alarm). Select

the desired option.

3. Use the arrow keys to highlight the SAVE/EXECUTE command, then Press

Return

. The TRXI enables the

selected mode of ring security.

RMON CAPABILITIES

The TRXI supports the following RMON MIB RFC 1271 Token Ring Extensions.

GETTING HELP

If you have questions, or need additional help, contact Cabletron Systems Technical Support:

By phone..........................(603) 332-9400

Monday-Friday; 8am - 8pm EST

By CompuServe®............GO CTRON from any ! Prompt

By Internet mail..............[email protected]

Cabletron Systems, Inc.

P.O. Box 5005, Rochester, NH 03867-0505

Printed in the United States of America

Order Number: 9030975 September 93

TRXI

is a trademarks of Cabletron Systems, Inc.

CompuServe

is a registered trademark of Compuserve

The information in this document is proprietary and is not to be copied in any form, or by any means,without the

written consent of Cabletron Systems.

GROUP SUBGROUP SECTION

Statistics rmon 1

Token Ring ML Stats Table statistics 2

History rmon 2

History Control Table history 1

Token Ring ML History Table history 3

Alarm rmon 3

Alarm Table Alarm 1

Event rmon 9

Event Table event 1

Log Table event 2

Token Ring rmon 10

Ring Station Control Table token ring 1

Ring Station Table token ring 2

Ring Station Order Table token ring 3

Ring Station Conﬁg Control Table token ring 4

Ring Station Conﬁg Table token ring 5

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