RE: Lossless fail-over

Tolga,

It is possible that associations fail for other reasons than loss of
peer.  We see associations failures in overloaded or poorly designed IP
networks.  I don't think we can always count on properly designed
networks.

Regards,
Lincoln

-----Original Message-----
From: Tolga Asveren [mailto:[email protected]] 
Sent: Monday, June 19, 2006 8:47 AM
To: [email protected]
Subject: RE: [Sigtran] Lossless fail-over

Jan,

I will try to summarize the rationale behind not having
changeover/changeback type of functionality in M3UA/SUA:
(there is an expired draft about M3UA deployment considerations, if you
are interested I can send you the relevant sections from it.)

a) Network failures are handled by SCTP + properly designed network.
b) Because of a) loss of SCTP association means peer going down.
c) When peer is down, changeover/changeback doesn't help -also not in
conventional SS7-.

   Thanks,
   Tolga


-----Original Message-----
From: Kolomaznik Jan [mailto:[email protected]]
Sent: Monday, June 19, 2006 8:44 AM
To: [email protected]
Subject: [Sigtran] Lossless fail-over


Hello everybody!
Is there any document specifying lossless fail-over or change-back
procedures in Sigtran especially in SUA?

I found out only expired draft-bidulock-sigtran-corid-03.txt. >From my
point of view this draft solves what I exactly need - but it is only
expired draft. How to solve it on inter-vendor level? Does anybody know
why this draft was leaved?

Thanks
Jan Kolomaznik


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