I am a little embarrassed I do not know the answer to this already, well I think I know the answer but I am not 100% sure and this I need to be 100% sure on.
We have several core .1q trunks that we initially setup with several VLANs. There is the core set of "switchport trunk allowed vlan 1,2,3,4,5,etc" and then there are a ton of "switchport trunk allowed vlan add" lines under it.
We want to open these trunks as the management of this has become a slight nightmare. Several trunks servicing virtual environments using vMotion all over the place and there is disparity between the links on what VLANs are allowed so we decided to just remove them as they are not providing much benefit.
Anyway, I think a simple "no switchport allowed vlan" command will do the trick but then I started thinking about the "add" lines and wondered if that would also remove those? I do not have much of a lab or test environment and just wanted some reassurance from fellow professionals. I am currently working on a Cisco Nexus 7K.
Thanks in advance for any input.