Re: TE-operator call for presentations/input (multi-area)

[Dimitri.Papadimitriou@alcatel.be]

ed, 

i have a question directed to the user community
on inter-as srlg diverse path, how can we ensure
a single srlg id space exists ? i.e. even if the
signalling allows for carrying an exclusion set 
(for inst. is as_1 uses set {1,2,3} and as_2 the 
set {4,5,6} the rro gives the set {2,5}, and the
for the protecting lsp the he selects 1, how to 
be sure that 1 and 5 do not share a common risk,
for inst. a common fiber cable ?)

thanks,
- dimitri.

Ed Kern wrote:
> 
>  We are starting to take the first steps in the direction of defining
>  requirements for multi-area TE.
> 
>  This was not fully fleshed out in Network Hierarchy and Multilayer
>  Survivability (RFC3386) for several reasons.  At the time, the
>  chairs, AD's, design team and WG simply werent sure if this was
>  necessary or that if there was enough operator need to properly scope
>  this work.
> 
>  Currently on the list we have been discussing requirements in the
>  context of draft-zhang-mpls-interas-te-req-01.txt.  Before we proceed
>  much further, the chairs would like to hear from operators who are:
> 
>  1. *Currently* in need of a multi-area solution on a production
>  2. Currently deploying a version/flavor of multi-area TE.
>  3. Waiting on a standard/guidance before planning/deploying
>  4. Feel that these requirements should be scoped out regardless of
>     current operational requirements.
> 
>  This is not an attempt to rope you into assisting with the current
>  draft but more a request to:
> 
>  1. Present current protocol limitations/concerns at next ietf
>  2. Discuss them on the list here
> 
>  We are specifically trying to target front-line engineering and
>  operational efforts.  We understand that from an architectural
>  perspective, having the path to multi-area and multi-as solutions
>  is desirable.  However, we are uncertain how much of this is pulling
>  up into *real* obstacles at this time.
> 
> Ed & Jim

-- 
Papadimitriou Dimitri 
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