portenable

[Curtis_Parish1]

Can someone elaborate on the following command? Below is all that I can find in the documentation. i know portadmin determines if a port processes BDBPs but what does portenable do?

set spantree portenable

Use this command to set the port status on one or more Spanning Tree ports.

[Straw__Glyn]

It is also recommended in this article outlining some best practises for getting started with L2 config, in case this is useful for you ..

Browser View: https://gtacknowledge.extremenetworks.com/articles/How_To/EOS-Basic-Switch-Layer-2-Configuration-Bes...

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Best Regards

Glyn

[Straw__Glyn]

The command does have a practical use ( set spantree portenable disable ).

It is often used for Lag member ports to ensure that only the lag logical port (lag,0.1) can forward. The member ports will be set portenable disable so that they cannot forward independently of the lag.

Thus if there are connectivity issues and lacp protocol cannot maintain the lag, the member ports will never forward independently of the lag. The is prevents possibility of loops if protocols are failing. It also means clean failover to whatever other redundant path there is.

Hope this helps
Glyn

[Straw__Glyn]

yes , the positioning under spanning tree can be a little misleading. I think this is a historical thing but i agree we should look at getting this into the config guide if customers are not seeing it.

Thanks for the feedback
Best Regards
Glyn

[Curtis_Parish1]

Very useful information that needs to be included in the configuration guide. Not sure why it is under spanning tree though. Sounds like it should be in the LACP config tree.