Re: [Mpls-interop] MPLS-TP OAM requirements - Lockandnotificationof lock

"Adrian Farrel" <adrian@olddog.co.uk> Tue, 05 May 2009 13:51 UTC

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From: Adrian Farrel <adrian@olddog.co.uk>
To: "Lam, Hing-Kam (Kam)" <hklam@alcatel-lucent.com>
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Cc: mpls-interop@ietf.org
Subject: Re: [Mpls-interop] MPLS-TP OAM requirements - Lockandnotificationof lock
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Hi,

Thanks Kam,

> Notification across layers takes place within a node. This is
> the context that my email was responding to.

This is the answer I was hoping to see as it coincides with my view of the 
world.

Doesn't that make inter-layer notificaiton an implementation issue?
Or, in terms of which douments we have, it is an architecture/framework 
item, not a requirements item.

Thanks,
Adrian

> -----Original Message-----
> From: Adrian Farrel [mailto:adrian@olddog.co.uk]
> Sent: Tuesday, May 05, 2009 6:02 AM
> To: Lam, Hing-Kam (Kam)
> Cc: mpls-interop@ietf.org
> Subject: Re: [Mpls-interop] MPLS-TP OAM requirements -
> Lockandnotificationof lock
>
> Am I missing something?
> Does notification across layers take place within a node or on the
wire?
>
> Thanks,
> Adrian
>
> ----- Original Message -----
> From: "Lam, Hing-Kam (Kam)" <hklam@alcatel-lucent.com>
> To: "Malcolm Betts" <betts01@nortel.com>; "Sprecher, Nurit (NSN -
IL/Hod
> HaSharon)" <nurit.sprecher@nsn.com>; <hhelvoort@chello.nl>;
> <mpls-interop@ietf.org>; "Martin Vigoureux"
> <martin.vigoureux@alcatel-lucent.com>
> Sent: Tuesday, May 05, 2009 6:51 AM
> Subject: Re: [Mpls-interop] MPLS-TP OAM requirements -
> Lockandnotificationof
> lock
>
>
> Dear all,
>
> See inline below. I am addressing the issue of notification across
> layers, not addressing notifying the sink (egress) points.
>
> Regards,
>
> Kam
>
> > -----Original Message-----
> > From: mpls-interop-bounces@ietf.org
> [mailto:mpls-interop-bounces@ietf.org]
> > On Behalf Of Malcolm Betts
> > Sent: Monday, May 04, 2009 8:42 AM
> > To: Sprecher, Nurit (NSN - IL/Hod HaSharon); hhelvoort@chello.nl;
> > mpls-interop@ietf.org
> > Subject: Re: [Mpls-interop] MPLS-TP OAM requirements - Lock
> > andnotificationof lock
> >
> > All,
> > I think you are making this far too complicated...  I see no need to
> > propagate the locked indication across layers.
> >
> > [Lam, Hing-Kam (Kam)] The bottom line is to avoid unexpected
> > interruption to the client services so that to reduce unnecessary
alarm
> > being raised from the client layer.
>