Re: I-D ACTION:draft-shiomoto-ccamp-lsp-hierarchy-bis-01.txt

[Igor Bryskin <i_bryskin@yahoo.com>]

Hi,

 

I think this is a useful document. I've also noticed quite a significant effort to improve the solution compared to the previous revision.

 

I believe there is one aspect (which is not covered yet) that would make the document even stronger. So far we do not have a way to bundle dynamic parallel H-LSPs and advertise them as a single TE link. Note that bundling could be different depending on routing instance the TE link is advertised in. For instance, it is possible to advertise parallel H-LSPs into one routing instance as separate TE links, into another as a single TE link and into the third as several TE links (with each of them bundling two or more H-LSPs).

 

The simple solution would be to allow assigning the same link IDs (numbered or unnumbered) by H-LSP ingresses to H-LSPs that need to be bundled before advertising into particular routing instance.

 

If you agree with such approach, it would be good to have an abstract describing the H-LSP bundling.

 

Thanks,

Igor

 

> A New Internet-Draft is available from the on-line Internet-Drafts directories.
>
>
> Title : Advertisement of hierarchical and stitchable Label Switched Paths as Traffic Engineering Links
> Author(s) : K. Shiomoto, et al.
> Filename : draft-shiomoto-ccamp-lsp-hierarchy-bis-01.txt
> Pages : 17
> Date : 2006-3-7
>
> This document addresses topics related to hierarchical and stitched
> Generalized Multiprotocol Label Switching (GMPLS) Label Switched
> Paths (LSPs). It describes extensions to allow an egress to identify
> that a bi-directional LSP will be used as a dynamically signaled
> Forwarding Adjacency LSP (FA-LSP) or Routing Adjacency (RA). In
> addition, the document also addresses the issue of how to indicate
> that an LSP should be advertised as a traffic engineering (TE) link
> into a different instance of the IGP and how to identify the instance
> that should be used.
>
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