Brandon Price wrote: > Thanks for the reply!! > Please don't remove the list from the Cc: - the replies in the archived may help others
>>From the link you sent: > > "The vlan dot1q tag native command is a global command that configures > the switch to tag > native VLAN traffic, and admit only 802.1Q tagged frames on 802.1Q > trunks, dropping any > untagged traffic, including untagged traffic in the native VLAN" > > Which tag is being applied to this formally "native" traffic? I've never used this feature - because it's a chassis global it's useless - so I'm not certain, but I think it's fair to assume the native vlans tag number. int gX/Y switchport mode trunk switchport trunk native vlan 123 switchport trunk allowed vlan 123,456 ...vlans 123 & 456 will come out tagged. I guess in this case, the only difference between a native and allowed vlan is... erm... the name? FYI, you can also try this: int gX/Y switchport mode trunk switchport trunk native vlan 999 switchport trunk allowed vlan 123,456 ...that is - 999 is a dummy vlan BUT is not in the allowed vlan list; I believe this stops it forwarding traffic. Note that certain untagged packets will always come out of a Cisco if their functions are enabled e.g. CDP, 802.1d STP, MST (I think?) _______________________________________________ cisco-nsp mailing list cisco-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/