Being a gateway for multiple VLANs?

I am hoping to have a linux machine act as a gateway for devices from
different VLANs. Devices from vlan1 should be able to speak to devices
from vlan2. I don't see why this should be a problem, since as far as I
understand the VLANs would be represented by additional interfaces
(i.e. eth0.0, eth0.1) by using vconfig. I am thinking the rest is just
a matter of having the proper ip routing rules.

However, in this thread:

http://groups.google.com/group/comp....7f8c22e9b56c9e

the following is mentionned:

"I am unaware of any software for Linux that does inter-VLAN routing,
which would involve speaking/parsing VLAN Trunking Protocol (VTP) and
the ability to designate virtual interfaces WITHIN the VLAN trunk (ala
router-on-a-stick topologies)."

Am I missing something? Is it not possible to route traffic from
devices incoming from one VLAN to another VLAN ?

Hello,

(E-Mail Removed) a écrit :
> I am hoping to have a linux machine act as a gateway for devices from
> different VLANs. Devices from vlan1 should be able to speak to devices
> from vlan2. I don't see why this should be a problem, since as far as I
> understand the VLANs would be represented by additional interfaces
> (i.e. eth0.0, eth0.1) by using vconfig. I am thinking the rest is just
> a matter of having the proper ip routing rules.

I agree.

> However, in this thread:
>
> http://groups.google.com/group/comp....7f8c22e9b56c9e
>
> the following is mentionned:
>
> "I am unaware of any software for Linux that does inter-VLAN routing,
> which would involve speaking/parsing VLAN Trunking Protocol (VTP) and
> the ability to designate virtual interfaces WITHIN the VLAN trunk (ala
> router-on-a-stick topologies)."
>
> Am I missing something?

If you are, then I am too. ;-)
I have the feeling that the author confused inter-VLAN routing and
switching. AFAIK, VLAN Trunking Protocol is about switching, not routing.