On Tue, Feb 05, 2008 at 10:53:49PM +0000, Phil Mayers wrote: > 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?
no, 123 vill be untagged while 456 will carry a tag. > 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. I believe you are right. -K -- Kristian Larsson KLL-RIPE Network Engineer & Peering Coordinator SpriteLink [AS39525] +46 704 910401 [EMAIL PROTECTED] _______________________________________________ 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/