OSPF configuration example on Nexus switches

Below is the OSPF configuration example on Nexus
switches. Here OSPF is enable on the directly connected interface between 7K
switches.

N7K-1:-

Step 1:-
Enable OSPF feature

N7K-1(config)# feature ospf

Step 2:- Enable OSPF Process

N7K-1(config)# router ospf 10 –<<<<
OSPF process ID

N7K-1(config-router)# router-id 10.1.1.1

Step 3:-
Enable ospf on particular
interface

N7K-12-1(config-router)# int Eth1/1

N7K-2(config-if)#ip address 10.1.1.1 255.255.255.252

N7K-12-1(config-if)# ip router ospf 100 area 0

N7K-2:-

Step 4 :- Enable OSPF feature

N7K-2(config)# feature ospf

Step 5:- Enable OSPF Process

N7K-2(config)# router ospf 100 –<<<<
OSPF process ID

N7K-2(config-router)# router-id 10.1.1.2

Step 6:-
Enable ospf on particular
interface.

N7K-2(config)# int Eth1/1

N7K-2(config-if)#ip address 10.1.1.2 255.255.255.252

N7K-2(config-if)# ip router ospf 100 area 0

Step 7 :- Optional- Below command can be used if we want
to disable the neighborship on particular interface.

N7K-1(config)# int Eth1/1

N7K-1(config-if)# ip ospf 100 passive-interface —< To disable neighborship but still
advertise the network

N7K-1(config-if)# ip ospf network point-to-point –<< To change the network type

Verification :-

A. Show ip ospf
neighbor

N7K-1# sh ip ospf neighbors

OSPF Process ID
100 VRF default

Total number of
neighbors: 1

Neighbor ID Pri State Up Time Address Interface

100.1.1.2 1 FULL/ – 00:00:08 100.1.1.2 Eth1/1