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Re: [Sigtran] M3UA Recovery after Heart beat loss detection

"Brian F. G. Bidulock" <bidulock@openss7.com> Tue, 23 January 2018 15:03 UTC

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Date: Tue, 23 Jan 2018 08:03:35 -0700
From: "Brian F. G. Bidulock" <bidulock@openss7.com>
To: Suchetha P <suchethap@yahoo.com>
Cc: "sigtran@ietf.org" <sigtran@ietf.org>, "sigtran-request@ietf.org" <sigtran-request@ietf.org>
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Subject: Re: [Sigtran] M3UA Recovery after Heart beat loss detection
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Suchetha,

Suchetha P wrote:                       (Tue, 23 Jan 2018 06:20:20)
>    Hi,
>    Could some one please reply as soon as possible.
>    Appreciate your help.
>    Best Regards,
>    Suchetha
>    On Tuesday, January 23, 2018 9:54 AM, Suchetha P <suchethap@yahoo.com>
>    wrote:
>    Hi,
>    When M3UA Heart beat loss is detected at local node due BEAT ack  not
>    received for the BEAT message sent and Heart beat timer times out it
>    makes the ASP  down locally.
>    Currently there seems to be no action take when the M3UA layer makes
>    the ASP  down. The local node does not  send any message towards the
>    core network for bringing up the ASP.
>    So I would like to know once ASP is down due to HB lost at M3UA layer
>    then how does the local node recover the M3UA layer ?
> 

Nobody uses M3UA BEAT much, because it is optional and ETSI
prescribes against it.

However, don't you think that the "local" system should either
send an ASP UP or drop the SCTP association and start again?

>    Best Regards,
>    Suchetha

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-- 
Brian F. G. Bidulock
bidulock@openss7.com
http://www.openss7.com/

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