Step 2 Run:
isis [ process-id ]
The IS-IS view is displayed.
Step 3 Run:
graceful-restart interval interval-value
The interval for reestablishing an IS-IS GR session is set.
The restart interval is set to the Holdtime in an IS-IS Hello PDU. Thus, the adjacency relationship
is not torn down when the switch restarts. By default, the restart period is 300 seconds.
Step 4 (Optional) Run:
graceful-restart suppress-sa
The GR restarter is configured to suppress the Suppress-Advertisement (SA) bit of the restart
TLV.
To prevent a switch from suppressing the SA bit in a Hello PDU during the active/standby
switchover, the administrator can run the undo graceful-restart suppress-sa command.
By default, the SA bit is not suppressed.
----End
6.16.4 Checking the Configuration
After configuring IS-IS GR, you can check the IS-IS GR status and parameters.
Prerequisites
The configurations for IS-IS GR are complete.
Procedure
Step 1 Run display isis graceful-restart status [ level-1 | level-2 ] [ process-id | vpn-instance vpn-
instance-name ] command to check the status of IS-IS GR.
----End
6.17 Maintaining IS-IS
Maintaining IS-IS involves resetting IS-IS and clearing IS-IS statistics.
6.17.1 Resetting IS-IS Data Structure
By restarting IS-IS, you can reset IS-IS. You can also reset IS-IS in GR mode.
S6700 Series Ethernet Switches
Configuration Guide - IP Routing 6 IS-IS Configuration
Issue 01 (2012-03-15) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
315
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