vPC Peer-Link behavior

[xayavongp]

I attempted to change the vPC role priority between two N5K. For it to take effect, it was suggested that the peer-link port-channel be "shut, no shut". 

However it seems like the SVI's on the switch shutdown and I lost my remote connection.

Question - was the svi going down expected ? 

[Mark Malone · Accepted solution]

Yes tahts expected

Excluding VLAN Interfaces from Shutting Down a vPC Peer Link Fails

When a vPC peer-link is lost, the vPC secondary switch suspends its vPC member ports and its switch virtual interface (SVI) interfaces. All Layer 3 forwarding is disabled for all VLANs on the vPC secondary switch. You can exclude specific SVI interfaces so that they are not suspended.

USE this under vpc domain first b4 shutting it
switch(config-vpc-domain))# dual-active exclude interface-vlan range xxx

[xayavongp]

Okay. Thanks for the info. 

[xayavongp]

Mark, is there any way to bring the VLANs back up - disconnect the peer keep-alive link?

or remove the secondary switch from the vpc domain? 

TACACS was severed (because the svi was suspended) and the local logons are not working/unknown.

There is console access to the second n5k switch. 

thanks,