I have a Cisco 4506 that has redundant cable connections to other switches in the network. I am currently running:
Cisco IOS Software, Catalyst 4000 L3 Switch Software (cat4000-I9K91S-M), Version 12.2(25)EWA8, RELEASE SOFTWARE (fc1)
If I do a "show spanning ?" there is an option to complete it using:
show spanning redundancy
however, it shows nothing and using the Cisco command lookup tool results no results. Does anyone know what this command is supposed to inform me of?
Looking into the code, I can guess that this command was implemented with the intend of returning some statistics about HA (high availability) STP events. This code is returning nothing. I'm surprised that this command is not at least hidden;-) Now, it may have been added for the sake of consistency with the CLI of some other features... I think you can just ignore this command for now.