On Thu, Aug 18, 2005 at 12:37:46PM +0300, Nickola Kolev wrote:
> Hello,
>
> This is a proprietary feature of Cisco Systems, so I doubt that any
> opensource tool can capture it. Besides that this kind of technology
> has various implementations, f.e. Extreme Networks call it VMAN and use
> a different ethertype frame (AFAIR, 0x9100).
AFAIK, every implementation should have 802.1q ethertype (0x8100)... Why
not to stack packets deeper? And every outer packet should be a valid
802.1q packet. And every inner packet, if it contains another one, should
also be a valid 802.1q packet. The most inner should, of course, be
"plain" ethernet packet, I guess. AFAIK...
Some devices allow to set ethertype for outer packet -- linux could do so
too?
ps. I have been looking for Q-in-Q solution for linux and have found none.
Would be great, but... I'm not a programmer..
>
> On Thu, 18 Aug 2005 02:05:20 -0700 (PDT)
> Viet Hung <lvhung2k3@xxxxxxxxx> wrote:
>
> > Hi all,
> >
> > I'm developing Q-in-Q VLAN feature for a router
> > software.
> > Does any open source tools have capacity of capturing
> > and displaying Q-in-Q
> > VLAN packet?
> >
> > Thanks & Regards,
> > Hung
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