Network Working Group D. Fedyk
Internet Draft Hewlett-Packard
Intended status: Standards Track D. Beller
L. Levrau
Alcatel-Lucent
D. Ceccarelli
Ericsson
F. Zhang
Huawei Technologies
Y. Tochio
Fujitsu
X. Fu
ZTE
Expires: August 18, 2014 February 14, 2014
UNI Extensions for Diversity and Latency Support
draft-fedyk-ccamp-uni-extensions-04.txt
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Fedyk et al. Expires August 2014 [Page 1]Internet-Draft draft-fedyk-ccamp-uni-extensions February 2014Copyright Notice
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Abstract
This document builds on the GMPLS overlay model [RFC4208] and defines
extensions to the GMPLS User-Network Interface (UNI) to support route
diversity within the core network for sets of LSPs initiated by edge
nodes. A particular example where route diversity within the core
network is desired, are dual-homed edge nodes. The core network is
typically composed of multiple network domains and those multi-domain
diversity aspects that have an implication on the GMPLS UNI
extensions are discussed.
The document also defines GMPLS UNI extensions to deal with latency
requirements for edge node initiated LSPs.
This document uses a VPN model that is based on the same premise as
L1VPN framework [RFC4847] but may also be applied to other
technologies. The extensions are applicable both to VPN and non VPN
environments. These extensions move the UNI from basic connectivity
to enhanced mode connectivity by including additional constraints
while minimizing the exchange of CE to PE information. These
extensions are applicable to the overlay extension service model.
Route Diversity for customer LSPs are a common requirement applicable
to L1VPNs. The UNI mechanisms described in this document are L1VPN
compatible and can be applied to achieve diversity for sets of
customer LSPs.
The UNI extensions in support of latency constraints can also be
applied to the extended overlay service model in order for the
customer LSPs to meet certain latency requirements.
Fedyk et al. Expires August 2014 [Page 2]Internet-Draft draft-fedyk-ccamp-uni-extensions February 2014Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 3
2. Conventions used in this document . . . . . . . . . . . . . . . 4
3. Contributors . . . . . . . . . . . . . . . . . . . . . . . . . 5
4. LSP Diversity in the Overlay Extension Service Model . . . . . 5
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