Thursday, April 30, 2020

OSPF over Nexus VPC

Hi gurus

I have a router connected to a switch which then has two trunks connecting to a pair of Nexus 3k switches. There is a VPC peer link between the Nexus, and the two connections to the switch are setup as LACP in a VPC group. I’d like to bring up an OSPF neighbor between the router and both Nexus for redundancy but I’m not sure how it will work.

VPC peer routing is configured on the Nexus. My assumption was I can make a /29 and give each device an IP in that subnet and it should form neighbors with everything. My concern is making routing loops. Will this work at all?



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