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Re: [SCTP-Discussion] Unexpected timegap...


Chronological Thread 
  • From: Andreas Jungmaier <ajung AT exp-math.uni-essen.de>
  • To: "'Thorbjørn Jørgensen'" <thjo02 AT kom.auc.dk>
  • Cc: discussion AT sctp.de
  • Subject: Re: [SCTP-Discussion] Unexpected timegap...
  • Date: Thu Jun 10 15:22:01 2004
  • List-id: SCTP Discussions <discussion.sctp.de>
  • Organization: University Duisburg-Essen

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Forgot to mention one thing:

>
> > Another (shorter) question: Is there a plan for when ADD_IP and DELETE_IP
> > to/from an association will be implemented into sctplib?
>
> Depending on the OS you are using, 1.1.6 *does* support the ADD-IP
> extension. However, the API may not be clear or obvious. The registered
> SCTP instances are notified by the routing socket when the IP addresses of
> a host system change.
>
> If you register the SCTP instance with a local address of INADDR_ANY,
> and simply do an "ifconfig eth1 blablabla up" (assuming this command
> correctly configures the new interface/address), and both sides support
> ADD-IP, then you should be able to trace an ADD-IP chunk (e.g. by using
> ethereal).


You also need to enable the ADD-IP extension in the library parameters,
something like this (extension to a code snippet from terminal.c) :

SCTP_getLibraryParameters(&params);
params.sendOotbAborts = sendOOTBAborts;
params.supportPRSCTP = 1;

params.supportADDIP = 1;
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
params.checksumAlgorithm = SCTP_CHECKSUM_ALGORITHM_CRC32C;
SCTP_setLibraryParameters(&params);


Let me know if that all helps,

best regards,
Andreas

- --
Dipl.-Ing. Andreas Jungmaier
Computer Networking Technology Group
University of Duisburg-Essen
http://www.exp-math.uni-essen.de/~ajung
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