H3C S5820X Series Command Reference Manual

Also see for s5800 series: Installation manual Instruction manual Command reference Quick start Troubleshooting guide

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H3C S5820X Series Command Reference Manual Manual pdf 137 page image

4-58This configuration is not supported on the null interface.Examples# Set the LSA transmission delay to 3 seconds on the current interface. system-view[Sysname] interface vlan-interface 10[Sysname-Vlan-interface10] ospf trans-delay 3peerSyntaxpeer ip-address [ cost value | dr-priority dr-priority ]undo peer ip-addressViewOSPF viewDefault Level2: System levelParametersip-address: Neighbor IP address.cost value: Specifies the cost to reach the neighbor, in the range 1 to 65535.dr-priority: Neighbor DR priority, in the range 0 to 255.DescriptionUse the peer command to specify a neighbor, and the DR priority of the neighbor.Use the undo peer command to remove the configuration.On an X.25 or Frame Relay network, you can configure mappings to make the network fully meshed(any two routers have a direct link in between), so OSPF can handle DR/BDR election as it does on abroadcast network. However, since routers on the network cannot find neighbors via broadcastinghello packets, you need to specify neighbors and neighbor DR priorities on the routers.After startup, a router sends a hello packet to neighbors with DR priorities higher than 0. When the DRand BDR are elected, the DR will send hello packets to all neighbors for adjacency establishment.Note that:z The cost set with the peer command is the cost to the specified neighbor on the P2MP link. If nocost is specified, the cost to the neighbor equals the local interface’s cost.z A router uses the priority set with the peer command to determine whether to send a hello packetto the neighbor rather than for DR election. The DR priority set with the ospf dr-prioritycommand is used for DR election.Related commands: ospf dr-priority.