RE: spc connections

[Kireeti Kompella <kireeti@juniper.net>]

Hi Lyndon,

On Fri, 14 Nov 2003, Ong, Lyndon wrote:

> Actually the extensions in the GMPLS Overlay draft would not
> be sufficient.  Overlay deals again with signaled interfaces
> rather than SPC.

You make a good point.  A minor inaccuracy is that the signaling can
be sent across the 'ingress UNI' without having signaling across the
'egress UNI' (if you'll forgive my abuse of terminology).

How about the following further clarification:

REPLACE:

3.3. Explicit Label Control

   In order to support explicit label control and full identification of
   the egress link, an ingress edge-node may include an ERO whose last
   group of subobjects are set as follows:

WITH:

3.3. Explicit Label Control

   Four signaling modes to establish a connection from the ingress
   edge-node to the egress edge-node are described here.  The first is
   a Switched Connection (SC), where the ingress edge-node signals all
   the way to the egress edge-node.  The second is a Soft Permanent
   Connection (SPC) where the ingress core-node signals to the egress
   core-node.  The third is a hybrid signaling mode where an ingress
   edge-node signals to the egress core-node.  The final mode is when
   an ingress core-node signals to the egress edge-node; this uses the
   same procedures as SCs, and will not be further elaborated.

   In order to support modes two and three, the ingress signaling node
   (ingress core-node for mode 2 and ingress edge-node for mode 3) must
   identify the egress link, i.e., the link between the egress core-node
   and the egress edge-node.  This is done using explicit label control.
   An ingress signaling node may include an ERO whose last group of
   subobjects are set as follows:
   (etc.)

END

Kireeti.
-------