VLAN implementation

[Srini vasa]

Thanks a lot. I had another related question.

In the afore mentioned case of two VLANs (vlan1 and vlan2), if we receive a
VLAN enabled frame on vlan1 (e.g. ICMP echo) and we need to generate an ARP
request to figure out the MAC of the source (who sent the original frame),
which interface will the ARP request go on???

Does the ARP module keep track of which vlan interface the original frame
came in??? I do not see that anywhere in the code.

Regards,
Shreeni



On 12/12/06, Vladimir Grebenschikov <vova at fbsd.ru> wrote:
>
> В вт, 12/12/2006 в 10:11 +0530, Srini vasa пишет:
>
> > I had a question regarding routing in freeBSD for VLAN enabled packets.
> >
> > Looks like freeBSD does not include VLAN information into the routing
> table.
> > My question is, when we have two remote hosts connected through two
> > different VLANs (probably on two different physical interfaces on the
> local
> > host) with same IP addresses, how is the routing information stored for
> each
> > of them in a distinct manner????
>
> VLANs are represented in host as different network interfaces, routing
> entry may have a reference on specific network interface, including some
> vlan interface.
>
> > Regards,
> > Shreeni
>
> --
> Vladimir B. Grebenschikov
> vova at fbsd.ru
>