sctp-discussion - [SCTP-Discussion] ACK with gap problem (fwd)

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[SCTP-Discussion] ACK with gap problem (fwd)

From: Karel Zabloudil <karel.zabloudil AT sde.cz>
To: discussion AT sctp.de
Subject: [SCTP-Discussion] ACK with gap problem (fwd)
Date: Wed Jan 18 19:02:02 2006
List-id: SCTP Discussions <discussion.sctp.de>

Hello,

we are currently experiencing a problem with ACK with Gap Acks.
our side is using SCTP library, the remote side is SCTP in kernel.

here is the scenario (also I can send ethereal dump)

* our side sends 5 DATA with TSN = 32971 - 32980
* remote sends SACK for TSN 29778 with GAP Acknowledgement inside ACK for
29780 - 32970 (which means that 29779 is missing - 3192 TSNs back!!!!)
* our side instead of sending 29779 retransmits TSN = 32971 - 32980 again
and again...

did anybody see this ?

thanks,

Karel

[SCTP-Discussion] ACK with gap problem (fwd), Karel Zabloudil, 01/18/2006
- Re: [SCTP-Discussion] ACK with gap problem (fwd), Michael Tuexen, 01/18/2006

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