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Step Command Remarks
2. Enter BGP view.
bgp
as-number
N/A
3. Enable GR capability for BGP.
graceful-restart
By default, GR capability is
disabled for BGP.
4. Configure the GR timer.
graceful-restart timer restart
timer
The default setting is 150
seconds.
The time that a peer waits to
re-establish a session must be
less than the hold time.
5. Configure the maximum time to
wait for the End-of-RIB marker.
graceful-restart timer
wait-for-rib
timer
The default setting is 180
seconds.
6. Configure the RIB purge timer.
graceful-restart timer
purge-time
timer
The default setting is 480
seconds.
Configuring BGP NSR
BGP nonstop routing (NSR) ensures continuous routing by synchronizing BGP state and data
information from the active BGP process to the standby BGP process. The standby BGP process
can seamlessly take over all services when the active process fails in one of the following situations:
• The active BGP process restarts.
• The member device that runs the active BGP process fails.
GR and NSR have the following differences:
• To implement NSR, the IRF fabric must have at least two member devices because the active
and standby BGP processes run on different member devices. To implement GR, the IRF fabric
only needs to have one member device.
• GR requires GR-capable neighbors to help restore routing information. NSR does not need
help because the standby process has all the BGP state and data information of the active
process.
When both GR and NSR are configured for BGP, NSR has a higher priority than GR. The device will
not act as the GR restarter. If the device acts as a GR helper, it cannot help the restarter to complete
GR.
To configure BGP NSR:
Step Command Remarks
1. Enter system view.
system-view
N/A
2. Enter BGP view.
bgp
as-number N/A
3. Enable BGP NSR.
non-stop-routing
By default, BGP NSR is
disabled.
Enabling SNMP notifications for BGP
This feature enables BGP to generate SNMP notifications. The generated SNMP notifications are
sent to the SNMP module.
For more information about SNMP notifications, see Network Management and Monitoring
Configuration Guide.
To enable SNMP notifications for BGP:
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