HP 6125G HP 6125G & 6125G/XG Blade Switches Layer 3 - IP Routing Confi - Page 98
Configuring the non IETF standard OSPF GR Helper, Triggering OSPF Graceful Restart
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Step Command 4. Configure the neighbors for which the router can serve as graceful-restart help { acl-number a GR Helper. | prefix prefix-list } Remarks Optional. The router can serve as a GR Helper for any OSPF neighbor by default. Configuring the non IETF standard OSPF GR Helper Step Command 1. Enter system view. system-view 2. Enable OSPF and enter its view. ospf [ process-id | router-id router-id | vpn-instance vpn-instance-name ] * 3. Enable the link-local signaling capability. enable link-local-signaling 4. Enable the out-of-band enable re-synchronization capability. out-of-band-resynchronization 5. Configure the neighbors for which the router can serve as graceful-restart help { acl-number a GR Helper. | prefix prefix-list } Remarks N/A N/A Disabled by default. Disabled by default. Optional. The router can serve as a GR Helper for any OSPF neighbor by default. Triggering OSPF Graceful Restart Performing a Master/Slave switchover, or performing the following configuration on an OSPF router, will trigger OSPF Graceful Restart. To trigger OSPF Graceful Restart: Task Trigger OSPF Graceful Restart. Command reset ospf [ process-id ] process graceful-restart Remarks Available in user view Configuring BFD for OSPF OSPF supports the following BFD detection methods: • Control packet bidirectional detection, which requires BFD configuration to be made on both OSPF routers on the link. • Echo packet single-hop detection, which requires BFD configuration to be made on one OSPF router on the link. Configuring control packet bidirectional detection Both ends of a BFD session must be on the same network segment and in the same area. One network segment can only belong to one area. 88
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