Re: MS-SPring

[Huub van Helvoort <hhelvoort@chello.nl>]

Hallo Dimitri,

You responded to Diego:

> Diego Caviglia wrote:
>
> > Hi Dimitri,
> >             given the high number of MS-SPRing protected transport 
> > network
> > already deployed seems reasonable to me, from a Network Operator point of
> > view, to use at the same time MS-SPRing protection with GMPLS 
> > restoration.
>
> there are already two questions here 1. is there an operational need to 
> control such rings using GMPLS (? for instance is it effective knowing 
> that ring based protection is mainly data plane driven ?) and 2. how to 
> position the ring protection wrt to the LSP recovery segment/end-to-end 
> recovery

The first step in MS-Spring is indeed dataplane driven (using APS)
but that involves only nodes adjacent to the fault.

The reconfiguration of the ring after this first switch is controlplane
driven and concerns all nodes in the ring.

Cheers, Huub.

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