Ethereal-dev: RE: [Ethereal-dev] SCTP stat and Agentx dissector

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From: "Terletsky Oleg" <oleg.terletsky@xxxxxxxxxxxx>
Date: Wed, 9 Feb 2005 16:32:29 -0500
Hi Michael,

The reason I added SCTP conversation is because 
I found it very useful for measuring retransmissions on mutihomed
association. 
It helps to identify network configuration problems. 
With regards to filters I didn't finish it yet. But if your sctp_stat
already doing it I'm not going to do it.

The bottom line is that we needed counters for each chunk sent and
received from/to each SCTP endpoint.

Thanks,
Oleg.

-----Original Message-----
From: Michael Tuexen [mailto:Michael.Tuexen@xxxxxxxxxxxxxxxxx] 
Sent: Tuesday, February 08, 2005 5:07 PM
To: Terletsky Oleg
Cc: ethereal-dev@xxxxxxxxxxxx; guy@xxxxxxxxxxxx
Subject: Re: [Ethereal-dev] SCTP stat and Agentx dissector


Hi Oleg,

I have played with the SCTP code you sent and have some comments: 1. How
much sense does it make to have SCTP conversations?
    I'm wondering, because for UDP or TCP this corresponds to
    a TCP connection or a UDP communication relation. But for
    SCTP it has no sense, since SCTP associations are multihomed.
    Guy, what do you mean?
2. If the user specifies a display filter for an association
    you provide a statistic for the chunks. Currently on the last
    chunk within each packet matching the display filter is counted.
    How do you use this feature? Do you need this counter per
    association for each direction separately or do you
    use also other filters? We could integrate such a statistic
    in the SCTP analysis window which shows information per association.

Best regards
Michael

On Feb 7, 2005, at 20:06 Uhr, Terletsky Oleg wrote:

> Hi,
>
> With regards to SCTP stat. I think it's great that you already have 
> something. We will start using it as soon as you publish it.
>
> It just currently we in the middle of the testing some big project 
> that includes SCTP measurement stuff and I found it very useful for 
> our testers instead of struggle with bunch of
> filters just get all information in one shot.
>
> Guy,
> Another question is AgentX dissector.
> I sent the tarball and I'd like a to get some comments on it also.
>
> Thanks,
> Oleg.
>
>
> -----Original Message-----
> From: Terletsky Oleg
> Sent: Friday, February 04, 2005 4:58 PM
> To: 'ethereal-dev@xxxxxxxxxxxx'
> Cc: 'guy@xxxxxxxxxxxx'
> Subject: [Ethereal-dev] SCTP stat and Agentx dissector
>
>
> Sorry for the wrong subject in the prev. message.
>
>
> Hi,
> I'd like contribute another work to ethereal community.
>
> 1) I've added some statistics to SCTP.
>    tap-sctp.tgz contains the following:
>
>    gtk/sctp_stat.c - contains SCTP stat. GUI
>    tap-sctpstat.c  - tethereal variant of the same stat.
>    gtk/conversation_sctp.c - impl. of SCTP conversation info.
>
>    tap-sctp.patch - has a changes for packet-sctp.[hc] and
> tap-iousers.c
> and also for list of CM files
>    in order to support sctp stat and AgentX plug-in.
>
> 2) Plug-in dissector for AgentX protocol.
>
> I've tested it on Linux RHAS 3.0 It builds and executes fine.
>
> Thanks.
> Oleg.
>
>

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