All, From what I have gathered from this incredibly long thread is that you are trying to use the physical interface (which cannot be tagged) and sub-interfaces (which can be tagged). I'm going to talk Foundry since that's the evil I know. On a Foundry, there is what is called dual-mode. On the physical interface of the switch, you configure it for dual-mode, and tell the interface for what default VLAN you want untagged traffic dropped into. All other traffic will be tagged (802.1q) and will be dropped into the proper VLAN. Example: conf t int e 1 dual-mode 111 vlan 112 tag e 1 vlan 113 tag e 1 vlan 111 untag e 1 Someone in the world of Crisco, can you confirm what I'm saying: If a dot1q trunk receives a tagged frame on the native vlan, it drops it. When a cisco trunk port receives untagged frames it forwards them to the native vlan #1 by default So, if you want the native VLAN to be something other than 1, you can change the default VLAN, but this does not move STP or other Crisco things from VLAN 1. Message Edited by Munpe_Q on 11-17-2008 05:54 PM Message Edited by Munpe_Q on 11-17-2008 05:54 PM
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