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3com S7906E Manuel De Montage

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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