[ns] SCTP: chunk fragmentation is not yet supported? Help!
daniel.anguita at gmail.com
Wed Nov 4 17:04:07 PST 2009
I'm using ns2 to simulate and test performance of an application over
different protocols. The first tests with TCP where very easy to do, but now
i'm trying with SCTP and everything was going well till i got this message:
SCTP ERROR: message size (10240) too big
SCTP ERROR: data chunk size (10256) + SCTP/IP header(34) > MTU (1500)
...chunk fragmentation is not yet supported!
What i did is to create a new Application that is aware of SCTP protocol, so
I can use the AppData settings and test a few things.
I also add a "priority" flag on the SCTP Header that I use to mark each
"data chunk" to know each priority, because later i want to add a per-flow
I'm doing this for my master thesis, and i'm working on ns2 from the
BUT, what i didn't know is that SCTP didnt support chunk fragmentation yet!
(i'm fool, i didnt read things right)
I am very scared, because I may loose all my work that I've accomplished so
far. Because without this feauture, i cant test my theory....
Anyone knows some work around? is there any patch to add fragmentation
My only hope is to implement it myself? (i wish not)
I need to mesure the bandwith speed and packet delay/loss over a given
topology and a given application with different protocols.
Thanks in advance guys, bye.
Daniel Anguita O.
UTFSM - Master Thesis
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