Re: M2PA: resynchronization of sequence numbers after PO

"Brian F. G. Bidulock" <[email protected]> Mon, 19 Nov 2007 05:37:02 -0700

Newsgroups	gmane.ietf.sigtran
Organization	http://www.openss7.org/
Message-ID	<[email protected]>

chenxu,

chenxu wrote:                                    (Mon, 19 Nov 2007 17:47:30)
> Hi Brian F. G. Bidulock,
> 
> 	There is another possibility,the communication between SCTP and M2PA
> 	is lost in the endpoint which sending the first Ready message.This
> 	endpoint was once in RPO state and now in Ready message sending state.
> 	The second Ready message will not reach its M2PA  ,and its M2PA can
> 	not receive COMMUNICATIONS LOST indication either.

Nor will it receive any other message.  The implementation is seriously broken
and the link will fail.  Hopefully traffic at MTP Level 3 will reroute through
some better implementation after the link fails.

If the implementation breaks, it will break the protocol.

The rest was moot considering this premise.

--brian

-- 
Brian F. G. Bidulock
[email protected]
http://www.openss7.org/