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Wireshark-users: Re: [Wireshark-users] docsis problems

From: "Frank Bulk" <frnkblk@xxxxxxxxx>
Date: Fri, 30 Nov 2007 15:05:07 -0600
Martin shared a copy with me and it didn't decode correctly in 0.99.5 rev
20677.

Frank

-----Original Message-----
From: wireshark-users-bounces@xxxxxxxxxxxxx
[mailto:wireshark-users-bounces@xxxxxxxxxxxxx] On Behalf Of Guy Harris
Sent: Friday, November 30, 2007 2:19 PM
To: Community support list for Wireshark
Subject: Re: [Wireshark-users] docsis problems

admin2@xxxxxxxxxxxx wrote:

> any one knows why (newest version) Wireshark cant handle Docsis packets ?

Can older versions handle them?

> When i snif on my Cisco CMTS e.g. DHCP req. from a Cablemodem, i can only
> see the ip-pack. from the server.
> The rest packets are marked with : DOCSIS Mac specific[malformed packet.]
>
> I can see that Wireshark supports lots of DOCSIS packets so dont
understand
> why this doesnt work.

Either because

        1) there really are problems with the packets

or

        2) there's a bug in one of the dissectors for DOCSIS protocols.

If you can, for example, save one of the packets with this problem into
a file, and provide us with that one-packet file, we can try to see
what's causing the problem.  If you do so, file it as a bug on
bugs.wireshark.org, so we can track it.
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