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OSPF config standards for Nexus

As we know Nexus supports multiple vrf under same ospf process , but there is also a way where we can create multiple ospf process per vrf.

which should be preferred and why ?

Also if anyone can highlight the role of ROUTER-ID with regards to this type of config , it will be great

Type 1

router ospf 100

vrf vrf_a

vrf vrf_b

Type 2

router ospf 100 vrf vrf_a

router ospf 200 vrf vrf_b

Everyone's tags (2)
1 REPLY 1

Hello Rahul,

Hello Rahul,

Normally if you ask me , I would always go and configure per VRF basis only.

For example :-

switch# configure terminal
switch(config)# vrf context NewVRF
switch(config)# router ospf 101
switch(config)# interface ethernet 1/2
switch(config-if)# no switchport
switch(config-if)# vrf member NewVRF
switch(config-if)# ip address 172.0.2.1/16
switch(config-if)# ip router ospf 101 area 0
switch(config)# copy running-config startup-config

Have a look in the below link for good explanation on Router ID.

http://www.cisco.com/c/en/us/td/docs/switches/datacenter/nexus5000/sw/unicast/5_0_3_N1_1/Cisco_n5k_layer3_ucast_cfg_rel_503_N1_1/l3_overview.html#pgfId-1114154

Hope it Helps..

-GI

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