draft-ietf-pce-inter-layer-req-14.txt   draft-ietf-pce-inter-layer-req-15.txt 
Network Working Group T. Takeda (Ed.) Network Working Group T. Takeda (Ed.)
Internet Draft NTT Internet Draft NTT
Category: Informational A. Farrel Category: Informational A. Farrel
Old Dog Consulting Old Dog Consulting
Expires: March 29, 2011 September 29, 2010 Expires: June 4, 2011 December 4, 2010
PCC-PCE Communication and PCE Discovery Requirements for PCC-PCE Communication and PCE Discovery Requirements for
Inter-Layer Traffic Engineering Inter-Layer Traffic Engineering
draft-ietf-pce-inter-layer-req-14.txt draft-ietf-pce-inter-layer-req-15.txt
Abstract Abstract
The Path Computation Element (PCE) provides functions of path The Path Computation Element (PCE) provides functions of path
computation in support of traffic engineering in Multi-Protocol Label computation in support of traffic engineering in Multi-Protocol Label
Switching (MPLS) and Generalized MPLS (GMPLS) controlled networks. Switching (MPLS) and Generalized MPLS (GMPLS) controlled networks.
MPLS and GMPLS networks may be constructed from layered client/server MPLS and GMPLS networks may be constructed from layered client/server
networks. It is advantageous for overall network efficiency to networks. It is advantageous for overall network efficiency to
provide end-to-end traffic engineering across multiple network provide end-to-end traffic engineering across multiple network
layers. PCE is a candidate solution for such requirements. layers. PCE is a candidate solution for such requirements.
Generic requirements for a communication protocol between Path Generic requirements for a communication protocol between Path
Computation Clients (PCCs) and PCEs are presented in "PCE Computation Clients (PCCs) and PCEs are presented in RFC 4657, "PCE
Communication Protocol Generic Requirements". Generic requirements Communication Protocol Generic Requirements". Generic requirements
for PCE discovery protocol are presented in "Requirements for Path for a PCE discovery protocol are presented in RFC 4674, "Requirements
Computation Element (PCE) Discovery". for Path Computation Element (PCE) Discovery".
This document complements the generic requirements and presents This document complements the generic requirements and presents
detailed sets of PCC-PCE communication protocol requirements and PCE detailed sets of PCC-PCE communication protocol requirements and PCE
discovery protocol requirements for inter-layer traffic engineering. discovery protocol requirements for inter-layer traffic engineering.
Status of this Memo Status of this Memo
This Internet-Draft is submitted to IETF in full conformance with the This Internet-Draft is submitted to IETF in full conformance with the
provisions of BCP 78 and BCP 79. provisions of BCP 78 and BCP 79.
skipping to change at page 11, line 8 skipping to change at page 11, line 8
It is expected that solutions for inter-layer protocol extensions It is expected that solutions for inter-layer protocol extensions
will address these issues in detail. will address these issues in detail.
6. IANA Considerations 6. IANA Considerations
This Informational document makes no requests for IANA action. This Informational document makes no requests for IANA action.
7. Acknowledgments 7. Acknowledgments
We would like to thank Kohei Shiomoto, Ichiro Inoue, Dean Cheng, We would like to thank Kohei Shiomoto, Ichiro Inoue, Dean Cheng,
Meral Shirazipour, and Julien Meuric for their useful comments. Meral Shirazipour, Julien Meuric, and Stewart Bryant for their useful
Thanks to members of ITU-T Study Group 15 Question 14 for their comments. Thanks to members of ITU-T Study Group 15 Question 14 for
constructive comments during the liaison process. their constructive comments during the liaison process.
8. References 8. References
8.1. Normative References 8.1. Normative References
[RFC2119] Bradner, S., "Key words for use in RFCs to indicate [RFC2119] Bradner, S., "Key words for use in RFCs to indicate
requirements levels", RFC 2119, March 1997. requirements levels", RFC 2119, March 1997.
[RFC3945] Mannie, E., "Generalized Multi-Protocol Label Switching [RFC3945] Mannie, E., "Generalized Multi-Protocol Label Switching
Architecture", RFC 3945, October 2004. Architecture", RFC 3945, October 2004.
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