Re: VLAN 1 - Native

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On Wed, Feb 1, 2012 at 9:50 AM, yao zhao <yao.development@xxxxxxxxx> wrote:
>
>
> On Wed, Feb 1, 2012 at 8:04 AM, Eric Dumazet <eric.dumazet@xxxxxxxxx> wrote:
>>
>> Le mercredi 01 février 2012 à 11:24 +0000, Leonardo Uzcudun a écrit :
>> > ________________________________
>> > Da: Leonardo Uzcudun <uzcudunl@xxxxxxxx>
>> > A: "netdev@xxxxxxxxxxxxxxx" <netdev@xxxxxxxxxxxxxxx>
>> > Inviato: Mercoledì 1 Febbraio 2012 12:22
>> > Oggetto: VLAN 1 - Native
>> >
>> > Hello:
>> >
>> > I'm connecting my Linux computer (debian 2.6.32-5) to a switch to
>> > implement vlans.
>> >
>> > All is working fine except for the VLAN 1. Of sure you are aware of
>> > this situation and i would like to knoe if there is any parameter or
>> > setting that i should set in the vlan (linux side, not switch)
>> > configuration. Here's my configuration:
>> > ip addr add 0.0.0.0 dev eth0
>> > ip link set eth0 up
>> > ip link add link eth0 name eth0.1 type vlan id 1
>> > ip link add link eth0 name eth0.101 type vlan id 101
>> > ip addr add 0.0.0.0 dev eth0.1
>> > ip addr add 0.0.0.0 dev eth0.101
>> > ip link set eth0.101 up
>> > ip link set eth0.1 up
>> > brctl addbr br_vlan_1
>> > brctl addbr br_vlan_101
>> > brctl addif br_vlan_1 eth0.1
>> > brctl addif br_vlan_101 eth0.101
>> > ip addr add 0.0.0.0 dev br_vlan_1
>> > ip
>> > addr add 0.0.0.0 dev br_vlan_101
>> > ip link set br_vlan_1 up
>> > ip link set br_vlan_101 up
>> >
>> > Traffic on vlan 101 is working fine. Traffic on VLAN 1 is not working
>> > cause the packets are going out from eth0 like tagged. How could i set
>> > the VID 1 as untagged?
>>
>> What do you mean by "sending packets for VID 1, untagged " ?
>>
 on switch like Cisco: vlan 1 is the native vlan or default vlan so it is
 untagged. untagged means packet has no vlan header.

>>
>> What is the difference between vlan 101 and vlan 1 ?

 No other difference. Just because it is vlan 1  which is special in
 switches(of course it can be changed on switch side but he doesn't want to)
>>
>>
>>
>>
>>
>>
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