Friday, June 8, 2018

Cisco Nexus vPC - Card Types

Hi,

If you want to migrate from 1 line card to another (M to F), it doesn't look that simple from first glance right?

if i remember correctly the vPC line card type plays a role in the forming of the vPC.

The scenario would be as follows:

A Nexus 7010 cluster connecting to nexus 5K and 9K in the access, the whole setup is Back 2 Back vPC. I want to move the connections of these switches from an M1 card to an F2e card which is in the chassis and added to the correct VDC.

The problem i think i will face is that when i remove the M1 interfaces from the vPC on switch 1 and shut the port-channel down and then add the interfaces from the F2e card, the vPC won't come up because it will mismatch with the peer's value of card. My idea was to always bring down 1 vPC on 1 Nexus 7K and then reconfigure the ports and then bring it back. Then configure the other end?

Or would this be a Type 2 consistency where as there will be a fault but the scenario would still forward the traffic? Or would this be a Type 1 consistency? The vPC does not come up and when shutting the other end i will create a traffic forward failure.

Any other idea's to move from this scenario?



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