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Re: [SCTP-Discussion] I do not get a CookieEcho - what happens ?


Chronological Thread 
  • From: Andreas Jungmaier <ajung AT exp-math.uni-essen.de>
  • To: discussion AT sctp.de, "Alfred Boucek" <Ing.AlfredBoucek AT gmx.at>
  • Subject: Re: [SCTP-Discussion] I do not get a CookieEcho - what happens ?
  • Date: Tue Apr 2 11:27:00 2002
  • List-id: SCTP Discussions <discussion.sctp.de>
  • Organization: University Essen

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On Thursday, 28. March 2002 10:32, Alfred Boucek wrote:
> Ich verwende sctplib-1.0.0-pre17
> habe folgendes gemacht:
> ./configure --enable-socketapi
> make
> make install
> cd /usr/SCTP/sctplib-1.0.0-pre17/sctplib/socket_programs
> sctpmultiserer (auf dem Server 10.0.1.254)
> sctpterminal 10.0.1.254:echo (auf dem Client 10.0.1.252)
>
>
> Mit etherreal sehe ich:
> SCTP init
> init-ack
> heartbeats
> heartbeat ack
>
> Was mache ich falsch haben sie einen Tipp für mich
>

Hello,
first off: the language for this discussion list is English, so in
order for all subscribers to profit from the answers, I would like
to keep it that way :-)

The question asked relates to one of the problems that come up with
multi-homing: a single-homed box does a setup with a triple-homed
box (which I can see from the INIT/INIT-ACK packets of the attached
tcpdump file).
The implementation chooses to send the CookeEcho to one of the
other three interfaces. If you ran Ethereal on the machine
with only one address, you would see all of the packets. Alternatively,
you might start Ethereal to capture data on all three interfaces...

The association is established, an both endpoints start exchanging
heartbeat messages, so everything is fine.

Hope that helps,
Andreas

- --
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Dipl.-Ing. Andreas Jungmaier | _
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