RE: GMPLS Sonet extensions

["Susumu Yoneda" <yone@japan-telecom.co.jp>]

Hi,

I also assume that there would be an out-of-band signalling network based on
a suite of GMPLS protocols including LMP. I think there will be issues to
address whether all messages will be shared by all nodes, i.e router,
SDH/SONET, and OXC or not. This will be a part of security issues.
-------------------------------
Susumu Yoneda   tel +81 3 5540 8493
Japan Telecom    fax +81 3 5540 8485
Information & Communication Labs.
e-mail  yone@japan-telecom.co.jp
-------------------------------
-----Original Message-----
From: owner-ccamp@ops.ietf.org [mailto:owner-ccamp@ops.ietf.org]On Behalf Of
Jimmy Gendron
Sent: Friday, June 08, 2001 10:01 PM
To: 'ccamp@ops.ietf.org'
Subject: GMPLS Sonet extensions


Hi,

I used to read almost all stuff regarding GMPLS since a week. I understand
most of the architecture, but I still have a question since the beginning;
as an unified control plane, how do the routing/signaling protocols exchange
informations on a configuration like this:

MPLS Router -----> SONET ADM ------> OXC  -----> WDM ----------- WDM
-------> OXC --------> SONET ADM --------> MPLS Router
(Ingress)

Its a basic point to point configuration, but it will allow me to understand
the basic features of GMPLS. If I want to create an MPLS LSP between the two
MPLS routers, how do the RSVP PATH message is sent to the network? (Assuming
that we have an out-of-band IP control network running LMP)

My guess is that the PATH message will leave the ingress router with a PATH
message with a calculated ERO. It assumes that the network is in respect
with the peer model...everyone have the same routing table and know the
actual network topology. So, my PATH message will follow the CSPF (ERO) and
go to the egress router. Am I right?

Best regards,

Jimmy Gendron