294Configuring GR HelperYou can configure the GR Helper capability on a GR Helper.Follow these steps to configure GR HelperTo do… Use the command… RemarksEnter system view system-view —Enter OSPFv3 view ospfv3 [ process-id ] —Enable the GR Helpercapability graceful-restart helper enable OptionalEnabled by default.Enable strict LSA checking graceful-restart helperstrict-lsa-checkingOptionalDisabled by default.Configuring BFD for OSPFv3Bidirectional forwarding detection (BFD) provides a mechanism to quickly detect the connectivity of linksbetween OSPFv3 neighbors, thus to improve the convergence speed of OSPFv3.After discovering neighbors by sending hello packets, OSPFv3 notifies BFD of the neighbor addresses,and BFD uses these addresses to establish sessions. Before a BFD session is established, it is in the downstate. In this state, BFD control packets are sent at an interval of no less than one second to reduce BFDcontrol packet traffic. After the BFD session is established, BFD control packets are sent at the negotiatedinterval, thereby implementing fast fault detection.To configure BFD for OSPFv3, you need to configure OSPFv3 first.Follow these steps to configure BFD for OSPFv3:To do… Use the command… RemarksEnter system view system-view —Enter OSPFv3 view ospfv3 [ process-id ] —Specify a router ID router-id router-id RequiredQuit the OSPFv3 view quit —Enter interface view interface interface-typeinterface-number —Enable an OSPFv3 process on theinterfaceospfv3 process-id area area-id[ instance instance-id ]RequiredNot enabled by defaultEnable BFD on the interface ospfv3 bfd enable [ instanceinstance-id ]RequiredNot enabled by defaultNOTE:For more information about BFD, seeHigh Availability Configuration Guide.
