cvs commit: src/sys/net if_bridge.c if_bridgevar.h src/sbin/ifconfig ifbridge.c

Arne Schwabe schwabe at
Sun Jul 1 17:15:47 UTC 2007

Bruce M. Simpson schrieb:
> Slawa Olhovchenkov wrote:
>> On Wed, Jun 13, 2007 at 06:58:04PM +0000, Andrew Thompson wrote:
>>>   All non-tagged traffic is treated as vlan1 as per IEEE 802.1Q-2003
>> Common practice: non-tagged traffic is treated as "native vlan".
> I'm confused now. Is this practice different from what the 802.1Q
> standard says?
You can have a tagged Vlan 1 and an untaged (native in cisco speech) on
dot1q port (trunk in cisco speech).  Some standard even uses vlan 0.
Iirc some Qos stuff.

A real world example:

interface GigabitEthernet0/21
 description uplink cat6509-e
 switchport trunk native vlan 506
 switchport trunk allowed vlan 1,323,506

Has a tagged vlan with ID 1 and an untagged vlan with corrosponds to
vlan 506.

I have not looked at diff but if the native vlan or untagged ethernet
frames are treated as vlan 1 this example vlan 1 and vlan 506 would be


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