Nexus vPC keepalive over FEX

[jason.williams@mail.nabors.com]

Any issues with running the vPC keepalive link over routed fex ports? I have 2 7710s with connected to each 2248PQ, and have setup fex port 1 to fex port 1 router for peerkeepalive link. It works, and I have had no issues with it. What are the disadvantanges, beside the obvious of if you lose a fex all vPC are down. That can happen with a 7700 module too.

N77---->2k(Port1)--------vPC keepalive-------2k(port1)<-----------N77

[Keny Perez]

Jason,

Welcome to the community!

I do not see any problem in here, we can actually see this recommendation below, which is not the same but still has a Mgnt switch in the middle:

http://www.cisco.com/en/US/docs/switches/datacenter/sw/design/vpc_design/vpc_best_practices_design_guide.pdf

When using mgmt0 port for vPC peer

keepalive link in a dual supervisor configuration, always use an intermediate

L2 switch to interconnect the different supervisors together

What I can see is that you are actually adding more point of failures, IMHO I rather have a direct point-to-point connection between the switches to have less dependency on components.

-Kenny