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DES-7200 Configuration Guide Chapter 6 BGP
Configuration
6-32
Caution
The bgp graceful-restart command does not take effect for established BGP
connection. Namely, the BGP connect will not negotiate GR capability
immediately when it is in Established status. In this case, you need to forcibly
restart the peer to negotiate the GR capability again, for instance, clear ip bgp
192.168.195.64. This avoids network oscillation caused by reestablishing
neighbor relationship.
Caution
Supporting BGP GR capability does not mean a device can serve as the GR
Restarter for graceful restart, which also depends on the hardware of the
device. The GR Restarter device needs to support dual-engine redundant hot
backup.
6.20.4 Configuring BGP GR Timer
After enabling the GR capability, the BGP automatically configures relevant timers
with default values. By default, the Restart Timer is 120s, the Wait-For-EOR Timer
is 120s and the StalePath Timer is 360s.
To cofnigure these timers, execute the following commands:
Command Function
DES-7200 # configure terminal Enter the global configuration mode.
DES-7200(config)# router bgp 500
Enter the BGP configuration mode.
DES-7200(config-router)# bgp
graceful-restart
Enable GR capability.
DES-7200(config-router)# bgp
graceful-restart restart-time 150
Set the Restart Timer to 150s.
DES-7200(config-router)# bgp
update-delay 150
Set the Wait-For-EOR Timer to 150s.
DES-7200(config-router)# bgp
graceful-restart stalepath-time 400
Set the StalePath Timer to 400s.
DES-7200(config-router)# end
Exit to the privileged mode.
DES-7200 # show running-config Show the configuration.
DES-7200 # write
(Optional) Save the configuration.
All the products supporting BGP support this command.