Operating Virtual Concatenation (VCAT) and the Link Capacity Adjustment Scheme (LCAS) with Generalized Multi-Protocol Label Switching (GMPLS)
RFC 6344
Document | Type |
RFC - Proposed Standard
(August 2011; No errata)
Updates RFC 4606
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|
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Authors | Richard Rabbat , Greg Bernstein , Huub van Helvoort , Diego Caviglia | ||
Last updated | 2015-10-14 | ||
Replaces | draft-bernstein-ccamp-gmpls-vcat-lcas | ||
Stream | Internent Engineering Task Force (IETF) | ||
Formats | plain text html pdf htmlized (tools) htmlized bibtex | ||
Reviews | |||
Stream | WG state | WG Document | |
Document shepherd | No shepherd assigned | ||
IESG | IESG state | RFC 6344 (Proposed Standard) | |
Action Holders |
(None)
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||
Consensus Boilerplate | Unknown | ||
Telechat date | |||
Responsible AD | Adrian Farrel | ||
IESG note | Deborah Brungard (dbrungard@att.com) is the document shepherd. | ||
Send notices to | (None) |
Internet Engineering Task Force (IETF) G. Bernstein, Ed. Request for Comments: 6344 Grotto Networking Updates: 4606 D. Caviglia Category: Standards Track Ericsson ISSN: 2070-1721 R. Rabbat Google H. van Helvoort Huawei August 2011 Operating Virtual Concatenation (VCAT) and the Link Capacity Adjustment Scheme (LCAS) with Generalized Multi-Protocol Label Switching (GMPLS) Abstract This document describes requirements for, and the use of, the Generalized Multi-Protocol Label Switching (GMPLS) control plane in support of the Virtual Concatenation (VCAT) layer 1 inverse multiplexing data plane mechanism and its companion Link Capacity Adjustment Scheme (LCAS). LCAS can be used for hitless dynamic resizing of the inverse multiplex group. These techniques apply to Optical Transport Network (OTN), Synchronous Optical Network (SONET), Synchronous Digital Hierarchy (SDH), and Plesiochronous Digital Hierarchy (PDH) signals. This document updates RFC 4606 by making modifications to the procedures for supporting virtual concatenation. Status of This Memo This is an Internet Standards Track document. This document is a product of the Internet Engineering Task Force (IETF). It represents the consensus of the IETF community. It has received public review and has been approved for publication by the Internet Engineering Steering Group (IESG). Further information on Internet Standards is available in Section 2 of RFC 5741. Information about the current status of this document, any errata, and how to provide feedback on it may be obtained at http://www.rfc-editor.org/info/rfc6344. Bernstein, et al. Standards Track [Page 1] RFC 6344 Operating VCAT and LCAS with GMPLS August 2011 Copyright Notice Copyright (c) 2011 IETF Trust and the persons identified as the document authors. All rights reserved. This document is subject to BCP 78 and the IETF Trust's Legal Provisions Relating to IETF Documents (http://trustee.ietf.org/license-info) in effect on the date of publication of this document. Please review these documents carefully, as they describe your rights and restrictions with respect to this document. Code Components extracted from this document must include Simplified BSD License text as described in Section 4.e of the Trust Legal Provisions and are provided without warranty as described in the Simplified BSD License. Bernstein, et al. Standards Track [Page 2] RFC 6344 Operating VCAT and LCAS with GMPLS August 2011 Table of Contents 1. Introduction ....................................................3 1.1. Conventions Used in This Document ..........................4 2. VCAT/LCAS Scenarios and Specific Requirements ...................4 2.1. VCAT/LCAS Interface Capabilities ...........................4 2.2. Member Signal Configuration Scenarios ......................5 2.3. VCAT Operation with or without LCAS ........................6 2.4. VCGs and VCG Members .......................................7 3. VCAT Data and Control Plane Concepts ............................7 4. VCGs Composed of a Single Member Set (One LSP) ..................8 4.1. One-Shot VCG Setup .........................................8 4.2. Incremental VCG Setup ......................................9 4.3. Procedure for VCG Reduction by Removing a Member ...........9 4.4. Removing Multiple VCG Members in One Shot .................10 4.5. Teardown of Whole VCG .....................................10 5. VCGs Composed of Multiple Member Sets (Multiple LSPs) ..........10 5.1. Signaled VCG Service Layer Information ....................11 5.2. CALL_ATTRIBUTES Object VCAT TLV ...........................12 5.3. Procedures for Multiple Member Sets .......................14 5.3.1. Setting Up a New VCAT Call and VCG Simultaneously ..14 5.3.2. Setting Up a VCAT Call and LSPs without a VCG ......14 5.3.3. Associating an Existing VCAT Call with a New VCG ...15 5.3.4. Removing the Association between a Call and VCG ....15 5.3.5. VCG Bandwidth Modification .........................15 6. Error Conditions and Codes .....................................16 7. IANA Considerations ............................................17Show full document text