Ethereal-users: Re: [Ethereal-users] vlan

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From: Hansang Bae <hbae@xxxxxxxxxx>
Date: Tue, 21 Feb 2006 21:06:59 -0500
On 06:54 PM 2/21/2006, Mix (E-mail) wrote:
>where do I need to look in the sniffer trace for the VLAN ID or TAG value
>I can see the DSCP tag but cant find the VLAN ID or TAG


First, you had to have spanned/mirrored the trunk port.  If that's the case, then you can look right after the type/length field for the appropriate headers.  IEEE 802.1q and Cisco's ISL have different tags but they will show up.

hsb