Uplink vPC upgrade

[davidcomerford]

I am planning to add additional ports into the uplink vPC's on the FI's to provide more bandwidth. At the moment there is 2 interfaces in each port channel, on each FI and I'd like to increase that to 4 ports.
The environment is all IP storage so I'd like to avoid any disruption to traffic. Here's my thoughts on the steps.

1. Configure new interfaces on switch 1 and 2 for first vPC (with interfaces shut down)
2. Enable/Configure interfaces on FI 1 to ‘network’ mode and add to port channel
3. Enable interfaces on the switches for first vPC

4. Configure new interfaces on switches 1 and 2 for second vPC (with interfaces shut down)
5. Enable/Configure interfaces on FI 2 to ‘network’ mode and add to port channel
6. Enable interfaces on the switches for second vPC

Appreciate any thoughts or feedback

[Kirk J]

Greetings.

For upstream switches connecting to FIs in End Host mode, your port-channel interfaces, in your VPC, should be in 'spanning-tree port type edge trunk', as the ports on FI in end-host mode don't participate in spanning-tree, and have other loop-avoidance mechanisms.

The FIs don't know anything about VPCs, but think they are just multiple uplink ports in a port-channel. 

Thanks,

Kirk...

[davidcomerford]

Understood.

In general does the order of the steps make sense? Also do you know if this upgrade process is disruptive?