Operation Manual – Routing ProtocolH3C S9500 Series Routing Switches Chapter 6 BGP Configuration6-8When exchanging routing information between BGP speakers, the peer group must beenabled first and then the peer should be added to the enabled peer group.V. Configuring the Graceful-restart ability of a peer or peer groupTable 6-6 Enable/disable the Graceful-restart ability of a peer or peer groupOperation CommandEnable the Graceful-restart ability of apeer or peer grouppeer { peer-address | group-name }graceful-restartDisable the Graceful-restart ability of apeer or peer groupundo peer { peer-address | group-name }graceful-restartVI. Configuring Graceful-restart Restart-time of a peer or peer groupTable 6-7 Configure Graceful-restart Restart-time of a peer or peer groupOperation CommandConfigure Graceful-restart Restart-time of apeer or peer grouppeer group-name restart-timertime-valueRestore the default value of Graceful-restartRestart-time of a peer or peer groupundo peer group-namerestart-timerThe setting of the Restart-time value is not directly related to the configuration ofGraceful-restart. That is, the Restart-time can be configured before the configuration ofthe Graceful-restart ability. The default value of the Restart-time is 180 seconds.VII. Configuring description of a peer (group)Description of a peer (group) can be configured to facilitate network maintenance.Table 6-8 Configure description of a peer (group)Operation CommandConfigure description of a peer (group) peer { group-name | peer-address }description description-lineDelete description of a peer (group) undo peer { group-name |peer-address } descriptionBy default, no BGP peer (group) description is set.VIII. Configuring timer of a peer (group)The peer timer command is used to configure timers of a BGP peer (group), includingthe keep-alive message interval and the hold timer. The preference of this command is