[LARTC] Tools can capture Q-in-Q VLAN packets?

[LARTC] Tools can capture Q-in-Q VLAN packets?

[Viet Hung]

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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Re: [LARTC] Tools can capture Q-in-Q VLAN packets?

[Nickola Kolev]

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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).

On Thu, 18 Aug 2005 02:05:20 -0700 (PDT)
Viet Hung <lvhung2k3@yahoo.com> 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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Re: [LARTC] Tools can capture Q-in-Q VLAN packets?

[Dmytro O. Redchuk]

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@yahoo.com> 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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Re: [LARTC] Tools can capture Q-in-Q VLAN packets?

[Roy-Magne Mo]

On Thu, Aug 18, 2005 at 02:05:20AM -0700, Viet Hung 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?

Ethereal captures them just fine

-- 
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