3Com S7902E, Configuration Manual

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You can enable the GR Restarter to suppress the Suppress-Advertisement (SA) bit in the hello PDUs.
In this way, its neighbors will still advertise the adjacencies within the specified period.
Follow these steps to configure GR on the GR Restarter and GR Helper respectively:
To do… Use the command… Remarks
Enter system view system-view
—
Enable IS-IS, and enter
IS-IS view
isis [ process-id ]
[ vpn-instance
vpn-instance-name ]
Required
Disabled by default
Enable the GR
capability for IS-IS
graceful-restart
Required
Disabled by default
Set the Graceful Restart
interval graceful-restart interval
timer
Required
300 seconds by default
Suppress the SA bit
during restart graceful-restart
suppress-sa
Optional
By default, the SA bit is not suppressed.
Enabling the Logging of Neighbor State Changes
Follow these steps to enable the logging of neighbor state changes:
To do… Use the command… Remarks
Enter system view
system-view
––
Enter IS-IS view
isis [ process-id ] [ vpn-instance
vpn-instance-name ]
––
Enable the logging of neighbor
state changes
log-peer-change
Required
Enabled by default
With this feature enabled, the router delivers information about neighbor state changes to the terminal
for display.
Enabling IS-IS SNMP Trap
Follow these steps to enable IS-IS SNMP trap:
To do… Use the command… Remarks
Enter system view system-view ––
Enter IS-IS view
isis [ process-id ] [ vpn-instance
vpn-instance-name ]
––
Enable SNMP trap is-snmp-traps enable
Required
Enabled by default