CCAMP & IPO draft-young-opt-nni-prot-issues-00.txt

[George Young <george.young@edgeflow.com>]

NAME OF I-D:
http://www.ietf.org/internet-drafts/draft-young-opt-nni-prot-issues-00.txt

SUMMARY:
Optical path recovery is an important commercial driver behind the
development and deployment of switched optical networks. Timely fault
notification for optical path protection purposes imposes many requirements
on control plane signalling. Many of these requirements can be supported by
IETF protocols, although some are in very early phases.
For the inter-network scenario, this draft relates network signalling
requirements to a particular optical service requirement of interest,
outlines how IETF protocols (either existing or at least identified) can be
used to support network requirements, and highlights two fault notification
requirements where mechanisms do not exist and new protocol work is
required.
RELATED DOCUMENTS:
These are considered complemetary I-Ds:
http://www.ietf.org/internet-drafts/draft-hayata-ipo-carrier-needs-00.txt
http://www.ietf.org/internet-drafts/draft-lang-ccamp-recovery-00.txt
http://www.ietf.org/internet-drafts/draft-bhandari-optical-restoration-00.tx
t
http://www.ietf.org/internet-drafts/draft-ietf-mpls-generalized-signaling-02
.txt 
http://www.ietf.org/internet-drafts/draft-papadimitriou-onni-frame-01.txt
http://www.ietf.org/internet-drafts/draft-katz-yeung-ospf-traffic-04.txt
http://www.ietf.org/internet-drafts/draft-parent-obgp-01.txt 
http://www.ietf.org/internet-drafts/draft-ietf-mpls-generalized-cr-ldp-03.tx
t    
http://www.ietf.org/internet-drafts/draft-ietf-mpls-generalized-rsvp-te-03.t
xt 
http://www.ietf.org/internet-drafts/draft-ietf-mpls-lmp-02.txt 
http://www.ietf.org/internet-drafts/draft-bala-restoration-signaling-00.txt 
http://www.ietf.org/internet-drafts/draft-ietf-mpls-recovery-frmwrk-02.txt 
http://www.ietf.org/internet-drafts/draft-ietf-diffserv-efresolve-01.txt 
http://www.ietf.org/internet-drafts/draft-jacquenet-qos-ext-bgp-00.txt     


WHERE DOES IT FIT IN THE PICTURE OF THE SUB-IP WORK

This draft is targeted at IPO and CCAMP.

WHY IS IT TARGETED AT THESE WGs

This draft addresses the following WG work items:
IPO - Identify and document the characteristics of the optical transport
network that are important for selecting paths for optical channels,
setting-up optical channels, and tearing-down optical channels. 
CCAMP - Develop and define a set of protocol-independent metrics and
parameters for describing links and paths that can be carried in protocols.
These will be developed in conjunction with requests and requirements from
other WGs (e.g., TEWG, PPVPN, etc.) to insure overall usefulness. 
CCAMP - Abstract link and path properties needed for link and path
protection. Define signalling mechanisms for path protection, diverse
routing and fast path restoration. Ensure that multi-layer path protection
and restoration functions are achievable using the defined signalling and
measurement protocols, either separately or in combination. 
CCAMP - Using input from the TE working group, ensure that the signalling
and measurement protocols provide both the information and the control
functions adequate to support the traffic provisioning and engineering
operations of service providers. 


JUSTIFICATION

Customer time limits on optical path protection impose delay performance
requirements on the control plane of optical networks, and in a
multi-network environment, the total delay limit must be partitioned across
the participating networks. Ascertaining and partitioning this delay is not
addressed in contending signalling protocols (e.g. RSVP-TE, CR-LDP) or in
other internet draft proposals.