Command
IP OSPF Network Point to Multipoint
Use
This command manually sets the OSPF network type to point-to-multipoint. The point-to-multipoint network type does not have an election.
Syntax
Router(config-if)#ip ospf network point-to-multipoint
Example
In this example, we will configure R4’s frame-relay link to use the point-to-multipoint network type.
First we’ll configure OSPF on R1, R3, and R4 for all interfaces.
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R4(config-router)#router ospf 1 |
After a couple minutes, R4 still doesn’t have any adjacencies
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R4(config-router)#do show ip ospf neighbor R4(config-router)# |
Notice that the OSPF network type is non_broadcast so it will require unicast updates.
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R4(config)#do show ip ospf interface s0/0 |
After we configure the point-to-multipoint network type on all routers, the adjacencies form.
Notice there is no DR information in the show ip ospf neighbor output. This is because the network type doesn’t support elections.
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R4(config)#int s0/0 *Mar 1 01:16:27.991: %OSPF-5-ADJCHG: Process 1, Nbr 111.111.111.111 on Serial0/0 from LOADING to FULL, Loading Done R4(config-if)#do show ip ospf neighbor Neighbor ID Pri State Dead Time Address Interface |
