The MPLS WG Archive

[Loa Andersson <loa@pi.se>]

Seisho,

thansk for taking care of this - and a little bit late this
is to announce that the working group last call on
draft-ietf-mpls-p2mp-sig-requirement-02.txt has ended.

The draft authors should take care of the comments and send
the responses together with an updated vesion to mailing list.

/Loa


Seisho Yasukawa wrote:

> Hi,
> 
> Even though we originally intended that it would be
> nice to accomplish partial make-before-break
> with changing some identifier which only related to
> changing portion of the tree and without changing
> identifier which related to rest of unchanged portion
> of the tree, I agree this is a little bit over-specified requirement.
> 
> We will relax the requirement a little bit.
> 
> Thank you for your useful suggestion.
> 
> Regards,
> Seisho
> 
> 
> At 14:47 05/06/10 -0400, George Swallow wrote:
> 
> 
>> >   The solution SHOULD allow for make-before-break re-optimization of
>> >   any subdivision of the P2MP LSP (S2L sub-tree, S2X sub-LSP, S2L
>> >   sub-LSP, X2L sub-tree, B2L sub-tree, X2L tree, or B2L tree) with no
>> >   impact on the rest of the P2MP LSP (no label reallocation, no change
>> >   in identifiers, etc.).
>>
>> Clearly in order to do make-before-break, some ID has to change.  And in
>> most cases the message that initiates the change will have to pass
>> through some nodes that aren't affected by the change.  So the
>> requirement seems to be a bit over-specified.
>>
>> I'm glad it's just a *SHOULD*.  It would be nice if you could say which
>> identifiers, but as were trying to be protocol neutral, that's a bit
>> difficult.
>>
>> Perhaps a more abstract requirement should be made?  Such as:
>>
>> >   The solution SHOULD allow for make-before-break re-optimization of
>> >   any subdivision of the P2MP LSP (S2L sub-tree, S2X sub-LSP, S2L
>> >   sub-LSP, X2L sub-tree, B2L sub-tree, X2L tree, or B2L tree).
>> >   Further is SHOULD do so minimizing the signalling impact on the rest
>> >   of the P2MP LSP and without affecting the ability of the management
>> >   plane to the LSP.
>>
>> ...George
>>
>>
>> ========================================================================
>> George Swallow             Cisco Systems                  (978) 936-1398
>>                            1414 Massachusetts Avenue
>>                            Boxborough, MA 01719
> 
> 
> 


-- 
Loa Andersson

Principal Networking Architect
Acreo AB                           phone:  +46 8 632 77 14
Isafjordsgatan 22                  mobile: +46 739 81 21 64
Kista, Sweden                      email:  loa.andersson@acreo.se
                                            loa@pi.se

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