R2511-HP MSR Router Series Layer 3 - IP Routing Configuration Guide(V5)

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• In general, the maximum time allowed for the peer to reestablish a BGP session must be less than
the Holdtime carried in the Open message.
• The End-Of-RIB (End of Routing-Information-Base) indicates the end of route updates.
Perform the following configuration on the GR helper.
To configure BGP GR:
Ste
p
Command Remarks
1. Enter system view.
system-view N/A
2. Enable BGP, and enter its view.
bgp as-number N/A
3. Enable GR Capability for BGP.
graceful-restart
Disabled by default.
4. Configure the maximum time
allowed for the peer to
reestablish a BGP session.
graceful-restart timer restart
timer
Optional.
150 seconds by default.
5. Configure the maximum time to
wait for the End-of-RIB marker.
graceful-restart timer
wait-for-rib timer
Optional.
180 seconds by default.
Enabling trap
After trap is enabled for BGP, BGP generates Level-4 traps to report important events. The generated
traps are sent to the information center of the device. The output rules of the traps (whether to output the
traps and the output direction) are determined according to the information center configuration. (For
information center configuration, see Network Management and Monitoring Configuration Guide.)
To enable trap:
Ste
p
Command Remarks
1. Enter system view.
system-view N/A
2. Enable trap for BGP.
snmp-agent trap enable bgp
Optional.
Enabled by default.
Enabling logging of session state changes
This task allows you to enable BGP to log session establishment and disconnection events. You can use
the display bgp ipv4 peer log-info command to view the log information.
To enable the logging of session state changes:
Step Command Remarks
1. Enter system view.
system-view N/A
2. Enter BGP view.
bgp as-number N/A
3. Enable the logging of session
state changes globally.
log-peer-change
Optional.
Enabled by default.