draft-ietf-ccamp-gmpls-signaling-g709v3-10.txt   draft-ietf-ccamp-gmpls-signaling-g709v3-11.txt 
Network Working Group Fatai Zhang, Ed. Network Working Group Fatai Zhang, Ed.
Internet Draft Huawei Internet Draft Huawei
Updates: 4328 Guoying Zhang Updates: 4328 Guoying Zhang
Category: Standards Track CATR Category: Standards Track CATR
Sergio Belotti Sergio Belotti
Alcatel-Lucent Alcatel-Lucent
D. Ceccarelli D. Ceccarelli
Ericsson Ericsson
Khuzema Pithewan Khuzema Pithewan
Infinera Infinera
Expires: December 18, 2013 June 18, 2013 Expires: January 02, 2014 July 02, 2013
Generalized Multi-Protocol Label Switching (GMPLS) Signaling Generalized Multi-Protocol Label Switching (GMPLS) Signaling
Extensions for the evolving G.709 Optical Transport Networks Control Extensions for the evolving G.709 Optical Transport Networks Control
draft-ietf-ccamp-gmpls-signaling-g709v3-10.txt draft-ietf-ccamp-gmpls-signaling-g709v3-11.txt
Status of this Memo Status of this Memo
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the provisions of BCP 78 and BCP 79. the provisions of BCP 78 and BCP 79.
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Drafts. Drafts.
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and may be updated, replaced, or obsoleted by other documents at any and may be updated, replaced, or obsoleted by other documents at any
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This Internet-Draft will expire on December 18, 2013. This Internet-Draft will expire on January 02, 2014.
Abstract Abstract
ITU-T Recommendation G.709 [G709-2012] has introduced new Optical ITU-T Recommendation G.709 [G709-2012] has introduced new Optical
channel Data Unit (ODU) containers (ODU0, ODU4, ODU2e and ODUflex) channel Data Unit (ODU) containers (ODU0, ODU4, ODU2e and ODUflex)
and enhanced Optical Transport Networking (OTN) flexibility. and enhanced Optical Transport Networking (OTN) flexibility.
This document provides an alternative to RFC4328 to provide the This document updates the ODU-related portions of RFC4328 to
extensions to the Generalized Multi-Protocol Label Switching (GMPLS) to provide the extensions to the Generalized Multi-Protocol Label
signaling to control the full set of OTN features including ODU0, Switching (GMPLS) signaling to control the full set of OTN features
ODU4, ODU2e and ODUflex. including ODU0, ODU4, ODU2e and ODUflex.
Conventions used in this document Conventions used in this document
The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
"SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
document are to be interpreted as described in [RFC2119]. document are to be interpreted as described in [RFC2119].
Table of Contents Table of Contents
1. Introduction .................................................. 3 1. Introduction .................................................. 3
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[G709-2012]. [G709-2012].
[OTN-FWK] provides a framework to allow the development of protocol [OTN-FWK] provides a framework to allow the development of protocol
extensions to support GMPLS and Path Computation Element (PCE) extensions to support GMPLS and Path Computation Element (PCE)
control of OTN as specified in [G709-2012]. Based on this framework, control of OTN as specified in [G709-2012]. Based on this framework,
[OTN-INFO] evaluates the information needed by the routing and [OTN-INFO] evaluates the information needed by the routing and
signaling process in OTNs to support GMPLS control of OTN. signaling process in OTNs to support GMPLS control of OTN.
[RFC4328] describes the control technology details that are specific [RFC4328] describes the control technology details that are specific
to the 2001 revision of the G.709 specification. This document to the 2001 revision of the G.709 specification. This document
provides an alternative to [RFC4328] to provide Resource ReserVation updates the ODU-related portions of [RFC4328] to provide Resource
Protocol-Traffic Engineering (RSVP-TE) extensions to support of ReserVation Protocol-Traffic Engineering (RSVP-TE) extensions to support
control for [G709-2012]. of control for [G709-2012].
2. Terminology 2. Terminology
The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
"SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
document are to be interpreted as described in [RFC2119]. document are to be interpreted as described in [RFC2119].
3. GMPLS Extensions for the Evolving G.709 - Overview 3. GMPLS Extensions for the Evolving G.709 - Overview
New features for the evolving OTN, for example, new ODU0, ODU2e, ODU4 New features for the evolving OTN, for example, new ODU0, ODU2e, ODU4
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| | ....... | | ....... | | | | ....... | | ....... | |
| A +-------------+ B +-------------+ C | | A +-------------+ B +-------------+ C |
+-----+ HO ODU4 +---------+ HO ODU2 +-----+ +-----+ HO ODU4 +---------+ HO ODU2 +-----+
=========: TSs occupied by ODUflex =========: TSs occupied by ODUflex
---------: available TSs ---------: available TSs
Figure 1 - Example of ODUflex(CBR) Traffic Parameters Figure 1 - Example of ODUflex(CBR) Traffic Parameters
As shown in Figure 1, assume there is an ODUflex(CBR) service As shown in Figure 1, assume there is an ODUflex(CBR) service
requesting a bandwidth of (2.5Gbps, +/-100ppm) from node A to node C. requesting a bandwidth of 2.5Gbps from node A to node C.
In other words, the ODUflex Traffic Parameters indicate that Signal In other words, the ODUflex Traffic Parameters indicate that Signal
Type is 20 (ODUflex(CBR)), Bit_Rate is 2.5Gbps (Note that the Type is 20 (ODUflex(CBR)), Bit_Rate is 2.5Gbps (Note that the
tolerance is no longer signaled as explained above). tolerance is not signaled as explained above).
- On the HO ODU4 link between node A and B: - On the HO ODU4 link between node A and B:
The maximum bit rate of the ODUflex(CBR) equals 2.5Gbps * (1 + The maximum bit rate of the ODUflex(CBR) equals 2.5Gbps * (1 +
100ppm), and the minimum bit rate of the tributary slot of ODU4 100ppm), and the minimum bit rate of the tributary slot of ODU4
equals 1,301,683.217 Kbps, so the total number of tributary slots equals 1,301,683.217 Kbps, so the total number of tributary slots
N1 to be reserved on this link is: N1 to be reserved on this link is:
N1 = ceiling (2.5Gbps * (1 + 100ppm) / 1,301,683.217 Kbps) = 2 N1 = ceiling (2.5Gbps * (1 + 100ppm) / 1,301,683.217 Kbps) = 2
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