||Communication Statement to Optical Internetworking Forum
(OIF) on automatic discovery work in Q.14/15
||Optical Internetworking Forum (OIF) Architecture and Signalling
||IETF ccamp Working Group
||1 September 2002
101 Crawfords Corner Road
Holmdel, NJ 07733, USA
Q.14/15 would like to inform the OIF that Q.14/15 is in the midst of
initiating work efforts in defining the specific protocol for Automatic
Discovery. Q.14/15 has initiated work on:
Draft new Recommendation G.7714.1, which is based on the OIF UNI 1.0 neighbour
and service discovery specification and will be developed to meet the protocol
neutral discovery requirements in Recommendation G.7714.
In the upcoming Q.14/15 meetings, Q.14/15 will be evaluating any possible
modifications that may be needed to the OIF UNI 1.0 specification in order
to meet the requirements in Recommendation G.7714.
We have identified some requirements that do not appear to be met by
the existing OIF UNI 1.0 specification. Some examples are;
We wish that as we continue our review of the OIF UNI 1.0 specification
you will be able to provide us with recommendations on how to close these
and future issues.
OIF UNI 1.0 specification does not support discovery across serial compound
OIF UNI 1.0 specification does not support discovery of the remote link
end-point identifier, nor the remote control entity id for each local SNTP
id. The OIF UNI 1.0 requires that discovery be initiated by sending a BeginVerify
message to the remote node over the CC. Therefore it assumes that
the remote node is already known as well as the address to reach the remote
Another point that needs to be considered is that it is necessary to divorce
the discovery notion from the overall control channel notion. This is blurred
in the OIF UNI 1.0 specification. We don’t need to use the line (or
section DCC) as a control channel in the in-band case. We may want
to use it only for “discovery” purposes.
Two documents are available at the ITU-T public ftp site for your information.
These include the approved Recommendation G.7714, plus contribution D.455
that provides a more detailed analysis of the UNI 1.0 specification against
the requirements in Recommendation G.7714. Also included in contribution
D.455 are proposed extensions to the OIF UNI 1.0 specification to close
the gaps. Q.14/15 looks forward to your input to help progress this
work in Q.14/15.
The two documents may be obtained from
||Generalized Automatic Discovery Techniques
|A protocol specific mapping for Rec. G.7714