How to convert two routed interfaces between two pair 9k and pair 7k t

[meerab-ejaz19]

We have pairs of N7K and N9k connecting via eigrp (full mesh), each one of the pair connected to two mpls routers, each pair have routing table, I am looking to replace the routed interfaces between pairs of N7K and N9K with vPC, is that possiable ? and how i can do it full mesh also i am not sure how to deal with the routing tables. Also, can you advise me on better practice designs that are attached to the current design?

[Elliot Dierksen]

It is hard to say without more detail regarding the environment. Are you talking about two VPC pairs, or 4 independent switches? As a general statement, full mesh and VPC is an easy way to create an inadvertent routing loop. That would (obviously) be bad.

[MHM Cisco World]

VPC between two NSK SW one N9K and other N7K is impossible 

Vpc between two pairs' one pairs of N9K and other pairs of N7K can do it called dual sided vPC 

MHM

[wajidhassan]

Hi @meerab-ejaz19 ,

You can’t replace routed interfaces between the Nexus 7K and 9K pairs with vPC because vPC works at Layer 2, not Layer 3. So, for your routed setup with EIGRP, you’ll want to keep the routed interfaces as they are.

To get redundancy and load balancing, rely on your routing protocols (like EIGRP) with ECMP instead of trying to convert those links to vPC.

vPC is best used for Layer 2 links in the access or aggregation layer, not for routing between core switches.