Sunday, October 24, 2021

LACP configuration question for hypervisor installation

I have a number of physical servers that needs to be commissioned remotely into virtualization hosts. Each server have two network ports for data.

The problem is the network configuration. I need the ports on the switches setup in different ways depending on how far the automated installation has progressed. But I'd like to avoid that if possible and find a configuration that works for both scenarios.

Scenario 1 - first part of the installation

Only one port is used. No vlans are setup so untagged traffic on that port.

Scenario 2 - second part of the installation

Two ports are bonded with LACP. Traffic is now tagged.


The combination of tagged and untagged traffic on the same interface can be handled by setting the port to hybrid tagged/untagged mode using switchport general.

But what about an LACP port channel? What happens if you connect only one non-LACP aware port? Is there a config that will allow that traffic to pass?

I only ever used channel-group X mode active and not thought much about it. Would perhaps passive mode work?


PS. I'm doing this on Dell N-series switches but I assume most switches will have the same options.



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