I'm pretty new to Nexus and have been putting in quoite a large deployment. One thing that happened has made me question if this is the default Nexus behavior. We have 2x7k's, multiple 5K's and loads of 2K's. What I see is the following:
We have 2x5k's running a VPC between them. When they are both powered on, the VPC comes up and everything works fantastic. When I power off any one of them the redundancy works great. My problem is if I power both off and only power one back on, the VPC fails to come back online. This renders the entire 2 x 5K's and FEX's useless.
This doesn't seem correct or to be default behavior. So has anyone come across this? I'm tipping its a config issue perhaps?
This is the output from the device that is powered on:
vPC domain id : 205
Peer status : peer link is down
vPC keep-alive status : Suspended (Destination IP not reachable)
Configuration consistency status: failed
Per-vlan consistency status : success
Configuration consistency reason: Consistency Check Not Performed
Type-2 consistency reason : Consistency Check Not Performed
vPC role : none established
Number of vPCs configured : 11
Peer Gateway : Disabled
Dual-active excluded VLANs : -
Graceful Consistency Check : Disabled (due to peer configuration)