CCIE: VTP pruning command rejected

Hello

I’ve spotted a funny behaviour on cisco ios when doing vtp pruning with except keyword.

If you don’t want to prune e.g vlan 5, you think it’d suffice to say:

SW1(config)# int fa0/19

SW1(config-if-range)#switchport trunk pruning vlan except 5

% Range command terminated because it failed on FastEthernet0/19
Solution: you need to hardcode not pruning vlans 1 and 1002-1005…

 

SW1(config-if-range)#switchport trunk pruning vlan except 1,5,1002-1005

SW1(config-if-range)# !!! SUCCESS!!!