I use Ethereal all the time for capturing RTP and RTCP. Ethereal does not
automatically display the protocols though. You have to manually select the
decode. The decode will decode both halves of the RTP stream, but you will
have to also manually select the RTCP decode for those packets.
Fortunately, you just have to decode one packet and Ethereal will figure out
the rest.
Joe
-----Original Message-----
From: David Frascone [mailto:dave@xxxxxxxxxxxx]
Sent: Monday, April 29, 2002 6:40 AM
To: Chen Yu
Cc: ethereal-dev@xxxxxxxxxxxx; ethereal-users@xxxxxxxxxxxx
Subject: [Ethereal-users] Re: [Ethereal-dev] Capture RTP/RTCP
Ethereal would have no problems capturing the stream. . . . The problem is
identifying the stream. Most protocols that use RTP (or a flavor thereof)
negotiate the port internally. (Kinda like FTP does).
So, for example, if you're doing voice over ip using SIP+RTP, inside the
SIP conversation, it would specify what ports the RTP would be sent/received
on.
Since dissectors are called based on protocol/port . . I don't see this
being
implemented any time soon. (I can't think of any easy way to do it. Can
anyone else?)
-Dave
On Monday, 29 Apr 2002, Chen Yu wrote:
> Hi,
>
> I got one question, is that possible to use ethereal to capture RTP/RTCP
>
> packets?
> Thanks
>
> Alex.
> --
> -------------------------
> Chen Yu
> Telematica Instituut
> Enschede, Netherlands
> http://www.telin.nl
> +31 53 4850 343 (office)
> +31 6 47272444 (mobile)
> -------------------------
>
>
>
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>
--
David Frascone
43% of all statistics are worthless.
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