draft-ietf-ccamp-gmpls-ospf-g709v3-07.txt   draft-ietf-ccamp-gmpls-ospf-g709v3-08.txt 
CCAMP Working Group D. Ceccarelli, Ed. CCAMP Working Group D. Ceccarelli, Ed.
Internet-Draft D. Caviglia Internet-Draft D. Caviglia
Updates: 4203 (if approved) Ericsson Updates: 4203 (if approved) Ericsson
Intended status: Standards Track F. Zhang Intended status: Standards Track F. Zhang
Expires: December 27, 2013 D. Li Expires: January 5, 2014 D. Li
Huawei Technologies Huawei Technologies
S. Belotti S. Belotti
P. Grandi P. Grandi
Alcatel-Lucent Alcatel-Lucent
R. Rao R. Rao
K. Pithewan K. Pithewan
Infinera Corporation Infinera Corporation
J. Drake J. Drake
Juniper Juniper
June 25, 2013 July 4, 2013
Traffic Engineering Extensions to OSPF for Generalized MPLS (GMPLS) Traffic Engineering Extensions to OSPF for Generalized MPLS (GMPLS)
Control of Evolving G.709 OTN Networks Control of Evolving G.709 OTN Networks
draft-ietf-ccamp-gmpls-ospf-g709v3-07 draft-ietf-ccamp-gmpls-ospf-g709v3-08
Abstract Abstract
This document describes Open Shortest Path First - Traffic This document describes Open Shortest Path First - Traffic
Engineering (OSPF-TE) routing protocol extensions to support Engineering (OSPF-TE) routing protocol extensions to support
Generalized MPLS (GMPLS) control of Optical Transport Networks (OTN) Generalized MPLS (GMPLS) control of Optical Transport Networks (OTN)
specified in ITU-T Recommendation G.709 as published in 2012. It specified in ITU-T Recommendation G.709 as published in 2012. It
extends mechanisms defined in RFC4203. extends mechanisms defined in RFC4203.
Status of this Memo Status of this Memo
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This Internet-Draft will expire on December 27, 2013. This Internet-Draft will expire on January 5, 2014.
Copyright Notice Copyright Notice
Copyright (c) 2013 IETF Trust and the persons identified as the Copyright (c) 2013 IETF Trust and the persons identified as the
document authors. All rights reserved. document authors. All rights reserved.
This document is subject to BCP 78 and the IETF Trust's Legal This document is subject to BCP 78 and the IETF Trust's Legal
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carefully, as they describe your rights and restrictions with respect carefully, as they describe your rights and restrictions with respect
skipping to change at page 2, line 26 skipping to change at page 2, line 26
Table of Contents Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 3 1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.1. Terminology . . . . . . . . . . . . . . . . . . . . . . . 3 1.1. Terminology . . . . . . . . . . . . . . . . . . . . . . . 3
2. OSPF-TE Extensions . . . . . . . . . . . . . . . . . . . . . . 3 2. OSPF-TE Extensions . . . . . . . . . . . . . . . . . . . . . . 3
3. TE-Link Representation . . . . . . . . . . . . . . . . . . . . 5 3. TE-Link Representation . . . . . . . . . . . . . . . . . . . . 5
4. ISCD format extensions . . . . . . . . . . . . . . . . . . . . 5 4. ISCD format extensions . . . . . . . . . . . . . . . . . . . . 5
4.1. Switching Capability Specific Information . . . . . . . . 7 4.1. Switching Capability Specific Information . . . . . . . . 7
4.1.1. Switching Capability Specific Information for 4.1.1. Switching Capability Specific Information for
fixed containers . . . . . . . . . . . . . . . . . . . 8 fixed containers . . . . . . . . . . . . . . . . . . . 7
4.1.2. Switching Capability Specific Information for 4.1.2. Switching Capability Specific Information for
variable containers . . . . . . . . . . . . . . . . . 8 variable containers . . . . . . . . . . . . . . . . . 8
4.1.3. Switching Capability Specific Information - Field 4.1.3. Switching Capability Specific Information - Field
values and explanation . . . . . . . . . . . . . . . . 9 values and explanation . . . . . . . . . . . . . . . . 9
5. Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 5. Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
5.1. MAX LSP Bandwidth fields in the ISCD . . . . . . . . . . . 12 5.1. MAX LSP Bandwidth fields in the ISCD . . . . . . . . . . . 12
5.2. Example of T,S and TS granularity utilization . . . . . . 14 5.2. Example of T,S and TS granularity utilization . . . . . . 14
5.2.1. Example of different TS Granularities . . . . . . . . 15 5.2.1. Example of different TS Granularities . . . . . . . . 15
5.3. Example of ODUflex advertisement . . . . . . . . . . . . . 17 5.3. Example of ODUflex advertisement . . . . . . . . . . . . . 17
5.4. Example of single stage muxing . . . . . . . . . . . . . . 20 5.4. Example of single stage muxing . . . . . . . . . . . . . . 20
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ODU0->ODU3->ODU4 ODU0->ODU3->ODU4
ODUflex->ODU2->ODU4 ODUflex->ODU2->ODU4
ODU0->ODU2->ODU4 ODU0->ODU2->ODU4
3. TE-Link Representation 3. TE-Link Representation
G.709 ODUk/OTUk Links are represented as TE-Links in GMPLS Traffic G.709 ODUk/OTUk Links are represented as TE-Links in GMPLS Traffic
Engineering Topology for supporting ODUj layer switching. These TE- Engineering Topology for supporting ODUj layer switching. These TE-
Links can be modeled in multiple ways. Links can be modeled in multiple ways.
OTUk physical Link(s) can be modeled as a TE-Link(s). The OTUk-TE- OTUk physical Link(s) can be modeled as a TE-Link(s). Figure 1 below
Link advertises ODUj switching capacity. The advertised capacity provides an illustration of one hop OTUk TE-links.
could include ODUk switching capacity. Figure 1 below provides an
illustration of one hop OTUk TE-links.
+-------+ +-------+ +-------+ +-------+ +-------+ +-------+
| OTN | | OTN | | OTN | | OTN | | OTN | | OTN |
|Switch |<- OTUk Link ->|Switch |<- OTUk Link ->|Switch | |Switch |<- OTUk Link ->|Switch |<- OTUk Link ->|Switch |
| A | | B | | C | | A | | B | | C |
+-------+ +-------+ +-------+ +-------+ +-------+ +-------+
|<-- TE-Link -->| |<-- TE-Link -->| |<-- TE-Link -->| |<-- TE-Link -->|
Figure 1: OTUk TE-Links Figure 1: OTUk TE-Links
It is possible to create TE-Links that span more than one hop by It is possible to create TE-Links that span more than one hop by
creating FAs between non-adjacent nodes (see Figure 2). As in the creating FAs between non-adjacent nodes (see Figure 2). As in the
one hop case, these types of ODUk-TE-Links also advertise ODU one hop case multiple hop TE-links advertise ODU switching capacity.
switching capacity.
+-------+ +-------+ +-------+ +-------+ +-------+ +-------+
| OTN | | OTN | | OTN | | OTN | | OTN | | OTN |
|Switch |<- OTUk Link ->|Switch |<- OTUk Link ->|Switch | |Switch |<- OTUk Link ->|Switch |<- OTUk Link ->|Switch |
| A | | B | | C | | A | | B | | C |
+-------+ +-------+ +-------+ +-------+ +-------+ +-------+
ODUk Switched ODUk Switched
|<------------- ODUk Link ------------->| |<------------- ODUk Link ------------->|
|<-------------- TE-Link--------------->| |<-------------- TE-Link--------------->|
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ITU-T, "Draft revised G.709, version 4", consented ITU-T, "Draft revised G.709, version 4", consented
by ITU-T in 2012. by ITU-T in 2012.
[RFC2119] Bradner, S., "Key words for use in RFCs to Indicate [RFC2119] Bradner, S., "Key words for use in RFCs to Indicate
Requirement Levels", BCP 14, RFC 2119, March 1997. Requirement Levels", BCP 14, RFC 2119, March 1997.
[RFC3630] Katz, D., Kompella, K., and D. Yeung, "Traffic Engineering [RFC3630] Katz, D., Kompella, K., and D. Yeung, "Traffic Engineering
(TE) Extensions to OSPF Version 2", RFC 3630, (TE) Extensions to OSPF Version 2", RFC 3630,
September 2003. September 2003.
[RFC4202] Kompella, K. and Y. Rekhter, "Routing Extensions in
Support of Generalized Multi-Protocol Label Switching
(GMPLS)", RFC 4202, October 2005.
[RFC4203] Kompella, K. and Y. Rekhter, "OSPF Extensions in Support [RFC4203] Kompella, K. and Y. Rekhter, "OSPF Extensions in Support
of Generalized Multi-Protocol Label Switching (GMPLS)", of Generalized Multi-Protocol Label Switching (GMPLS)",
RFC 4203, October 2005. RFC 4203, October 2005.
[RFC4328] Papadimitriou, D., "Generalized Multi-Protocol Label [RFC4328] Papadimitriou, D., "Generalized Multi-Protocol Label
Switching (GMPLS) Signaling Extensions for G.709 Optical Switching (GMPLS) Signaling Extensions for G.709 Optical
Transport Networks Control", RFC 4328, January 2006. Transport Networks Control", RFC 4328, January 2006.
11.2. Informative References 11.2. Informative References
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[OTN-SIG] F.Zhang, G.Zhang, S.Belotti, D.Ceccarelli, K.Pithewan, [OTN-SIG] F.Zhang, G.Zhang, S.Belotti, D.Ceccarelli, K.Pithewan,
"Generalized Multi-Protocol Label Switching (GMPLS) "Generalized Multi-Protocol Label Switching (GMPLS)
Signaling Extensions for the evolving G.709 Optical Signaling Extensions for the evolving G.709 Optical
Transport Networks Control, work in progress Transport Networks Control, work in progress
draft-ietf-ccamp-gmpls-signaling-g709v3-11", June 2013. draft-ietf-ccamp-gmpls-signaling-g709v3-11", June 2013.
[RFC2154] Murphy, S., Badger, M., and B. Wellington, "OSPF with [RFC2154] Murphy, S., Badger, M., and B. Wellington, "OSPF with
Digital Signatures", RFC 2154, June 1997. Digital Signatures", RFC 2154, June 1997.
[RFC5226] Narten, T. and H. Alvestrand, "Guidelines for Writing an
IANA Considerations Section in RFCs", BCP 26, RFC 5226,
May 2008.
[RFC5920] Fang, L., "Security Framework for MPLS and GMPLS [RFC5920] Fang, L., "Security Framework for MPLS and GMPLS
Networks", RFC 5920, July 2010. Networks", RFC 5920, July 2010.
[RFC6163] Lee, Y., Bernstein, G., and W. Imajuku, "Framework for [RFC6163] Lee, Y., Bernstein, G., and W. Imajuku, "Framework for
GMPLS and Path Computation Element (PCE) Control of GMPLS and Path Computation Element (PCE) Control of
Wavelength Switched Optical Networks (WSONs)", RFC 6163, Wavelength Switched Optical Networks (WSONs)", RFC 6163,
April 2011. April 2011.
[RFC6566] Lee, Y., Bernstein, G., Li, D., and G. Martinelli, "A [RFC6566] Lee, Y., Bernstein, G., Li, D., and G. Martinelli, "A
Framework for the Control of Wavelength Switched Optical Framework for the Control of Wavelength Switched Optical
Networks (WSONs) with Impairments", RFC 6566, March 2012. Networks (WSONs) with Impairments", RFC 6566, March 2012.
Authors' Addresses Authors' Addresses
Daniele Ceccarelli (editor) Daniele Ceccarelli (editor)
Ericsson Ericsson
Via A. Negrone 1/A Via E.Melen 77
Genova - Sestri Ponente Genova - Erzelli
Italy Italy
Email: daniele.ceccarelli@ericsson.com Email: daniele.ceccarelli@ericsson.com
Diego Caviglia Diego Caviglia
Ericsson Ericsson
Via A. Negrone 1/A Via E.Melen 77
Genova - Sestri Ponente Genova - Erzelli
Italy Italy
Email: diego.caviglia@ericsson.com Email: diego.caviglia@ericsson.com
Fatai Zhang Fatai Zhang
Huawei Technologies Huawei Technologies
F3-5-B R&D Center, Huawei Base F3-5-B R&D Center, Huawei Base
Shenzhen 518129 P.R.China Bantian, Longgang District Shenzhen 518129 P.R.China Bantian, Longgang District
Phone: +86-755-28972912 Phone: +86-755-28972912
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