Network Working Group Fatai Zhang
Internet Draft Huawei
Category: Informational O. Gonzalez de Dios
Telefonica Investigacion y Desarrollo
A. Farrel
Old Dog Consulting
Xian Zhang
Huawei
D. Ceccarelli
Ericsson
Expires: August 21, 2013 February 22, 2013
Applicability of Generalized Multiprotocol Label Switching (GMPLS)
User-Network Interface (UNI)
draft-zhang-ccamp-gmpls-uni-app-03.txt
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Abstract
Zhang Expires August 2013 [Page 1]
draft-zhang-ccamp-gmpls-uni-app-03.txt February 2013
Generalized Multiprotocol Label Switching (GMPLS) defines a set of
protocols for the creation of Label Switched Paths (LSPs) in various
switching technologies. The GMPLS User-Network Interface (UNI) was
developed in RFC4208 in order to be applied to an overlay network
architectural model.
This document examines a number of GMPLS UNI application scenarios.
It shows how techniques developed after the GMPLS UNI can be applied
to automate or enable critical processes for these applications. This
document also suggests simple extensions that could be made to
existing technologies to further enable the UNI and points out some
unresolved issues.
Table of Contents
1. Introduction ................................................ 3
2. UNI Addressing .............................................. 5
3. UNI Auto Discovery .......................................... 6
4. UNI Path Computation......................................... 7
4.1. UNI Link Selection...................................... 8
5. UNI Path Provisioning........................................ 9
5.1. Flat Model ............................................. 9
5.2. Stitching Model........................................ 10
5.3. Session Shuffling Model................................ 11
5.4. Hierarchal Model....................................... 11
6. UNI Recovery ............................................... 12
6.1. End-to-end Recovery.................................... 12
6.1.1. Serial Provisioning of Working and Protection Paths 13
6.1.2. Concurrent Computation of Working and Protection Path14
6.2. Segment Recovery....................................... 14
7. UNI Call ................................................... 15
7.1. Exchange of UNI Link Information ....................... 15
7.2. Control of Call Route.................................. 16
8. UNI Multicast .............................................. 16
8.1. UNI Multicast Connection Model ......................... 17
8.2. UNI Multicast Connection Provisioning .................. 18
9. Security Considerations..................................... 19
10. IANA Considerations........................................ 19
11. Acknowledgments ........................................... 19
12. References ................................................ 20
12.1. Normative References.................................. 20
12.2. Informative References................................ 22
13. Contributors' Address...................................... 23
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