draft-ietf-pce-stateful-pce-app-03.txt   draft-ietf-pce-stateful-pce-app-04.txt 
PCE Working Group X. Zhang, Ed. PCE Working Group X. Zhang, Ed.
Internet-Draft Huawei Technologies Internet-Draft Huawei Technologies
Intended status: Informational I. Minei, Ed. Intended status: Informational I. Minei, Ed.
Expires: April 28, 2015 Google, Inc. Expires: October 31, 2015 Google, Inc.
October 25, 2014 April 29, 2015
Applicability of a Stateful Path Computation Element (PCE) Applicability of a Stateful Path Computation Element (PCE)
draft-ietf-pce-stateful-pce-app-03 draft-ietf-pce-stateful-pce-app-04
Abstract Abstract
A stateful Path Computation Element (PCE) maintains information about A stateful Path Computation Element (PCE) maintains information about
Label Switched Path (LSP) characteristics and resource usage within a Label Switched Path (LSP) characteristics and resource usage within a
network in order to provide traffic engineering calculations for its network in order to provide traffic engineering calculations for its
associated Path Computation Clients (PCCs). This document describes associated Path Computation Clients (PCCs). This document describes
general considerations for a stateful PCE deployment and examines its general considerations for a stateful PCE deployment and examines its
applicability and benefits, as well as its challenges and limitations applicability and benefits, as well as its challenges and limitations
through a number of use cases. PCE Communication Protocol (PCEP) through a number of use cases. PCE Communication Protocol (PCEP)
skipping to change at page 1, line 39 skipping to change at page 1, line 39
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time. It is inappropriate to use Internet-Drafts as reference time. It is inappropriate to use Internet-Drafts as reference
material or to cite them other than as "work in progress." material or to cite them other than as "work in progress."
This Internet-Draft will expire on April 28, 2015. This Internet-Draft will expire on October 31, 2015.
Copyright Notice Copyright Notice
Copyright (c) 2014 IETF Trust and the persons identified as the Copyright (c) 2015 IETF Trust and the persons identified as the
document authors. All rights reserved. document authors. All rights reserved.
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include Simplified BSD License text as described in Section 4.e of include Simplified BSD License text as described in Section 4.e of
the Trust Legal Provisions and are provided without warranty as the Trust Legal Provisions and are provided without warranty as
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10.1. Normative References 10.1. Normative References
[I-D.ietf-pce-questions] [I-D.ietf-pce-questions]
Farrel, A. and D. King, "Unanswered Questions in the Path Farrel, A. and D. King, "Unanswered Questions in the Path
Computation Element Architecture", draft-ietf-pce- Computation Element Architecture", draft-ietf-pce-
questions-08 (work in progress), October 2014. questions-08 (work in progress), October 2014.
[I-D.ietf-pce-stateful-pce] [I-D.ietf-pce-stateful-pce]
Crabbe, E., Minei, I., Medved, J., and R. Varga, "PCEP Crabbe, E., Minei, I., Medved, J., and R. Varga, "PCEP
Extensions for Stateful PCE", draft-ietf-pce-stateful- Extensions for Stateful PCE", draft-ietf-pce-stateful-
pce-09 (work in progress), June 2014. pce-11 (work in progress), April 2015.
[RFC4655] Farrel, A., Vasseur, J., and J. Ash, "A Path Computation [RFC4655] Farrel, A., Vasseur, J., and J. Ash, "A Path Computation
Element (PCE)-Based Architecture", RFC 4655, August 2006. Element (PCE)-Based Architecture", RFC 4655, August 2006.
[RFC5440] Vasseur, JP. and JL. Le Roux, "Path Computation Element [RFC5440] Vasseur, JP. and JL. Le Roux, "Path Computation Element
(PCE) Communication Protocol (PCEP)", RFC 5440, March (PCE) Communication Protocol (PCEP)", RFC 5440, March
2009. 2009.
10.2. Informative References 10.2. Informative References
[I-D.ietf-ccamp-flexi-grid-fwk] [I-D.ietf-ccamp-flexi-grid-fwk]
Dios, O., Casellas, R., Zhang, F., Fu, X., Ceccarelli, D., Dios, O., Casellas, R., Zhang, F., Fu, X., Ceccarelli, D.,
and I. Hussain, "Framework and Requirements for GMPLS and I. Hussain, "Framework and Requirements for GMPLS-
based control of Flexi-grid DWDM networks", draft-ietf- based control of Flexi-grid DWDM networks", draft-ietf-
ccamp-flexi-grid-fwk-02 (work in progress), August 2014. ccamp-flexi-grid-fwk-03 (work in progress), February 2015.
[I-D.ietf-ccamp-gmpls-general-constraints-ospf-te] [I-D.ietf-ccamp-gmpls-general-constraints-ospf-te]
Zhang, F., Lee, Y., Han, J., Bernstein, G., and Y. Xu, Zhang, F., Lee, Y., Han, J., Bernstein, G., and Y. Xu,
"OSPF-TE Extensions for General Network Element "OSPF-TE Extensions for General Network Element
Constraints", draft-ietf-ccamp-gmpls-general-constraints- Constraints", draft-ietf-ccamp-gmpls-general-constraints-
ospf-te-08 (work in progress), May 2014. ospf-te-10 (work in progress), March 2015.
[I-D.ietf-ccamp-wson-signal-compatibility-ospf] [I-D.ietf-ccamp-wson-signal-compatibility-ospf]
Lee, Y. and G. Bernstein, "GMPLS OSPF Enhancement for Lee, Y. and G. Bernstein, "GMPLS OSPF Enhancement for
Signal and Network Element Compatibility for Wavelength Signal and Network Element Compatibility for Wavelength
Switched Optical Networks", draft-ietf-ccamp-wson-signal- Switched Optical Networks", draft-ietf-ccamp-wson-signal-
compatibility-ospf-15 (work in progress), May 2014. compatibility-ospf-15 (work in progress), May 2014.
[I-D.ietf-pce-gmpls-pcep-extensions] [I-D.ietf-pce-gmpls-pcep-extensions]
Margaria, C., Dios, O., and F. Zhang, "PCEP extensions for Margaria, C., Dios, O., and F. Zhang, "PCEP extensions for
GMPLS", draft-ietf-pce-gmpls-pcep-extensions-10 (work in GMPLS", draft-ietf-pce-gmpls-pcep-extensions-10 (work in
progress), October 2014. progress), October 2014.
[I-D.ietf-pce-stateful-sync-optimizations] [I-D.ietf-pce-stateful-sync-optimizations]
Crabbe, E., Minei, I., Medved, J., Varga, R., Zhang, X., Crabbe, E., Minei, I., Medved, J., Varga, R., Zhang, X.,
and D. Dhody, "Optimizations of Label Switched Path State and D. Dhody, "Optimizations of Label Switched Path State
Synchronization Procedures for a Stateful PCE", draft- Synchronization Procedures for a Stateful PCE", draft-
ietf-pce-stateful-sync-optimizations-01 (work in ietf-pce-stateful-sync-optimizations-02 (work in
progress), June 2014. progress), January 2015.
[I-D.sivabalan-pce-disco-stateful] [I-D.sivabalan-pce-disco-stateful]
Sivabalan, S., Medved, J., and X. Zhang, "IGP Extensions Sivabalan, S., Medved, J., and X. Zhang, "IGP Extensions
for Stateful PCE Discovery", draft-sivabalan-pce-disco- for Stateful PCE Discovery", draft-sivabalan-pce-disco-
stateful-03 (work in progress), January 2014. stateful-03 (work in progress), January 2014.
[RFC3209] Awduche, D., Berger, L., Gan, D., Li, T., Srinivasan, V., [RFC3209] Awduche, D., Berger, L., Gan, D., Li, T., Srinivasan, V.,
and G. Swallow, "RSVP-TE: Extensions to RSVP for LSP and G. Swallow, "RSVP-TE: Extensions to RSVP for LSP
Tunnels", RFC 3209, December 2001. Tunnels", RFC 3209, December 2001.
 End of changes. 9 change blocks. 
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