I am looking for clarification of vlan pruning; I have seen documentation that leads me to understand that vlans 1,1002-1005 are not eligible for vlan pruning as it carries management traffic such as CDP, so even if a switch has no active vlan 1 ports and the trunk native vlan has been changed vlan 1 will still not be pruned from the trunk.
This is an offshoot from a problem I raised in the following discussion in which vlan 1 is being pruned from trunks connected to a C3750-V2 but not when connected to a C3750:
IOS version: 15-0-2.SE5
There are few interoperability issues between 2960x and other vendors.
In this article we will go over the steps on how to debug these issues.
Check the phy id from “show controllers ethernet-controller phy” output.
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