Configuring Peer link in vPC

[akash.3.gupta]

While creating PEER link for a VPC  is it must to have peer switches  back to back connected or there can be a extended layer 2 connectivity over multiple layer 2 devices in between . If so is there any limitation on number of devices in between.

[Mark Malone]

They recommend that there directly connected if there is only 1 sup in each chassis but it does not have to be directly connected it can be set across switches

Not sure of overall limitation of switches in between though

[akash.3.gupta]

Hi Mark 

Thanks for the response.

Just curious to know how 1 sup or 2 SUP would matter in case of peer link.

Regards

Akash

[Mark Malone]

sorry got that slightly back to front , should have stated its in relation to using oob mgmt ports with vpc-peer keepalive they should only have 1 sup . This is because in a dual Supervisor system, only one management port is active at any one time. If the mgmt0 interfaces are connected without a switch, i.e. back-to-back, this will cause issues with vPC.

our Nexus setup is directly connected with dual sups in each chassis but not using the oob for peer-link keepalive using standard 10gb ports , you shouldn't have an issue no matter how many sups using standard ports, there's only certain recommendations when using the mgmt. ports with vpcs

[akash.3.gupta]

Thanks a lot Mark  :-)