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Vlan 1 Pruning eligibility C3750-V2

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: https://supportforums.cisco.com/discussion/12272906/spanning-tree-root-bridge-dispute-c3750-v2 IOS version: 15-0-2.SE5
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