Monday, January 25, 2021

Nexus vPC - How to handle orphan ports

In the process of converting an existing switch stack from another vendor to a spine/leaf Nexus design.

One thing I noticed is we have a the majority of connected devices are not using LACP connections off to the switches, but either single connections or active passive NICs.

There is no way to separate what VLANs that would need to be on vPC peer links and which ones that would not. Shit is all mixed up.

One option is to let the orphan ports be, and ensure the active link is always on switch 1, which would be the vPC primary (along with configuring the other cisco best practices for orphan ports).

The other option is to dedicate switches to be vPC switches, so there would be no orphan ports, and the other switches would just use LACP up to the spines (which would have vPC to these switches).

Anyone ever run into this sort of scenario?

Redoing this is out of scope, the environment is a pure mess but we need to get off this old stack.



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