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RE: [SCTP-Discussion] SACK trouble...


Chronological Thread 
  • From: Thorbjørn Jørgensen <thorbjorn AT softdoc.dk>
  • To: <discussion AT sctp.de>
  • Cc: "'Michael Tuexen'" <Michael.Tuexen AT micmac.franken.de>
  • Subject: RE: [SCTP-Discussion] SACK trouble...
  • Date: Fri May 21 22:43:23 2004
  • List-id: SCTP Discussions <discussion.sctp.de>
Hi Michael
The server which is running a modified version of one of the sctplib server
programs that continuously sends out packets, the IP is 10.8.4.249.
On the client two NIC are used with IP address 10.8.4.52 (Eth0 default), and
10.8.4.151 (Eth1)
The client that runs a terminal, with the following parameters:
# ./Terminal -s 10.8.4.52 -s 10.8.4.151 -p 10.8.4.151 -d 10.8.4.249
We are changing the primarypath from Eth0 to Eth1, but still the client
sends out sacks on the default interface.

Regards
Lars and Thorbjørn

-----Original Message-----
From:
discussion-admin AT sctp.de

[mailto:discussion-admin AT sctp.de]
On Behalf
Of Michael Tuexen
Sent: 12. maj 2004 09:07
To:
lbpe02 AT kom.auc.dk
Cc:
discussion AT sctp.de
Subject: Re: [SCTP-Discussion] SACK trouble...

Can you provide the IP-addresses you are using?

Best regards
Michael

On May 11, 2004, at 10:58 PM,
lbpe02 AT kom.auc.dk
wrote:

> Hi!
>
> We are doing a project measuring handover times on different
> technologies
> including mSCTP. During our work we have noticed a problem regarding
> transmitting SACKs on the interface which communication is handed over
> to.
>
> This is how we do: We have a stream server continuously transmitting
> data to a
> client running the terminal program, which is included in the sctplib.
> When we
> want to perform the handover, we use the SETPRIM command, which
> transmits an
> ASCONF to the server updating its primary path. This works perfectly,
> however
> the SACKs from the server are still transmitted on the “old” interface.
>
> One workaround is to modify the routing table, but we don’t like this
> solution,
> so we hope that someone out there can help :)
>
> Best regards
> Thorbjørn and Lars Students at Aalborg University
> _______________________________________________
> discussion mailing list
> discussion AT sctp.de
> http://www.sctp.de/mailman/listinfo/discussion
>

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