Re: How to announce ethernet capabilities in GMPLS

[Freek Dijkstra <fdijkstr@science.uva.nl>]

Hi Eduard,

Thanks for your response! I vary much appreciate that!

> I think there are two separate issues here:
> - The definition of an LSP in the LSC switching region between 2
> Ethernet switches (through the PXC), and
> - The definition of LSP in the L2SC switching regions through a number
> of Ethernet switches.
> 
[...]
> Which is your concern? (Note, to me, both appear to be areas of
> development)

I'm currently mostly interested in the former case.
Am I correct that this would typically involve two LSPs at the link
layer (L2 switch to PXC and PXC to anoother L2 switch) and a third LSP
at the ethernet layer.


> For the former, the WAN-PHY / LAN-PHY question seems relevant. I'd say
> this is (should be) somehow part of the G-PID for the LSP between the
> switches.
> 
> An overview of GMPLS parameters can be found at:
> http://www.iana.org/numbers.html#G

Thanks! I did not realize that the Internet Draft on G709 did define a
few new G-PID parameters.

However, I fear I'm now slightly confused how the G-PID are announced.
They don't seem to be included in the OSPF routing messages (neither RFC
4203 not 4204 seem to mention them). Is the G-PID decided during the
signaling, or announced by the routing and taken into account during the
 path computation?

Regards,
Freek