Re: Routing drafts

[Jonathan Sadler <jonathan.sadler@tellabs.com>]

Kireeti -

I'd like to echo Greg's concerns that the current drafts don't
adiquately provide information on what signals can be supported on a
link, adapated by a port and switched by a system.  Yes, there is a
definition for Min/Max LSP switching capability that attempts to deal
with this, but the information provided isn't precise enough.

One issue is the current switching capability descriptor cannot specify
how equipment deals with the transmux conditions that exist for DS1 (DS1
in VC-11 vs DS1 in DS3 in VC-3), VC-3 (VC-3 in AU-3 vs VC-3 in TU-3),
TUG-2 (TUG-2 in VC-3 vs TUG-2 in TUG-3), and VC-11 (VC-11 in TU-11 vs.
VC-11 in TU-12).  

As specific example, if a system reports a Max LSP of AUG-64, and a Min
LSP of VC-11, how do I know which of the 4 different ways that an VC-11
is encoded into an AUG-1 are specifically supported?  Do I assume all?

Jonathan Sadler

PS. For those not literate in SDH signal names, apply the following
mapping:
  VC-11 = VT-1.5
  VC-12 = VT2
  TUG-2 = VTG
  VC-3 = STS-1
  AUG-64 = STS-192c

Kireeti Kompella wrote:
> 
> The two drafts:
> 
> draft-ietf-ccamp-gmpls-routing-02.txt            and
> draft-ietf-ccamp-ospf-gmpls-extensions-04.txt
> 
> are, according to the authors, ready for WG Last Call.
> 
> I would like to judge WG consensus for this.
> 
> Thanks,
> Kireeti.
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