Re: I-D ACTION:draft-shiomoto-ccamp-lsp-hierarchy-bis-00.txt

[dimitri papadimitriou <dpapadimitriou@psg.com>]

all,

i don't think the issues of advertising an LSP as a TE link in another 
instance of the control plane than the one used for creating the LSP - ditto

"[HIERAR] did not consider scenarios where an LSP is created (and 
maintained) by one instance of the GMPLS control plane, and is used as a 
(TE) link by another instance of the GMPLS control plane."

is only a matter of indicating to which instance this advertisement 
should be done;

now, in addition to the "routing" part, there is the whole discussion 
about the maintenance of the (inherited) TE link - as we are speaking 
here about separate instance - some specific mechanism may be needed 
otherwise after their creation there may be no easy way to communicate 
their unavailability

another more specific question on this document, what is the definition 
of the value space for the "Target Control Plane Instance" ?

a last point, section 4 mentions

"This is not believed to be an issue as an informal survey indicated 
that dynamically signalled numbered FAs had not been deployed.  Indeed 
it was the attempt to implement numbered FAs that gave rise to the work 
on this document." ... is there a general feeling that having this 
mechanism will make dynamically triggered numbered FA a reality ?

thanks,
- dimitri.

Internet-Drafts@ietf.org wrote:

> A New Internet-Draft is available from the on-line Internet-Drafts directories.
>
>
> 	Title		: Advertisement of hierarchical and stitchable LSPs as TE Links 
> 	Author(s)	: K. Shiomoto, et al.
> 	Filename	: draft-shiomoto-ccamp-lsp-hierarchy-bis-00.txt
> 	Pages		: 15
> 	Date		: 2005-10-18
> 	
> This document addresses topics related to hierarchical and stitched 
> Label Switched Paths (LSPs).  It describes extensions to allow an 
> egress to identify that an LSP will be used as a dynamically signaled 
> Forwarding Adjacency LSP (FA-LSP) in the case of numbered FA's.  In 
> addition, the document addresses the issue of how to indicate that an 
> LSP should be advertised as a TE link into a different instance of 
> the control plane and how to identify the instance that should be 
> used.   
>
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> http://www.ietf.org/internet-drafts/draft-shiomoto-ccamp-lsp-hierarchy-bis-00.txt
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