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

Note: This archive is from the project's previous web site, ethereal.com. This list is no longer active.

Date Index Thread Index Other Months All Mailing Lists
Date Prev Date Next Thread Prev Thread Next
From: Michael Tuexen <Michael.Tuexen@xxxxxxxxxxxxxxxxx>
Date: Wed, 9 Feb 2005 22:38:10 +0100
Hi Oleg,

see my comments in-line.

Best regards
Michael

On Feb 9, 2005, at 22:32 Uhr, Terletsky Oleg wrote:


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.

Do you need this per association or per end-point?
The analysis in Ethereal can plot TSNs over the time. So you can see retransmissions... 

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.




______________________________________________________________________
  This email message has been scanned by PineApp Mail-Secure and has
been found clean.