MPLS Generic Associated Channel (G-ACh) Advertisement Protocol
draft-ietf-mpls-gach-adv-01
MPLS D. Frost, Ed.
Internet-Draft S. Bryant, Ed.
Intended status: Standards Track Cisco Systems
Expires: November 24, 2012 M. Bocci, Ed.
Alcatel-Lucent
May 23, 2012
MPLS Generic Associated Channel (G-ACh) Advertisement Protocol
draft-ietf-mpls-gach-adv-01
Abstract
The MPLS Generic Associated Channel (G-ACh) provides an auxiliary
logical data channel associated with a Label Switched Path (LSP), a
pseudowire, or a section (link) over which a variety of protocols may
flow. These protocols are commonly used to provide Operations,
Administration, and Maintenance (OAM) mechanisms associated with the
primary data channel. This document specifies simple procedures by
which an endpoint of an LSP, pseudowire, or section may inform the
other endpoints of its capabilities and configuration parameters, or
other application-specific information. This information may then be
used by the receiver to validate or adjust its local configuration,
and by the network operator for diagnostic purposes.
Status of this Memo
This Internet-Draft is submitted in full conformance with the
provisions of BCP 78 and BCP 79.
Internet-Drafts are working documents of the Internet Engineering
Task Force (IETF). Note that other groups may also distribute
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Internet-Drafts are draft documents valid for a maximum of six months
and may be updated, replaced, or obsoleted by other documents at any
time. It is inappropriate to use Internet-Drafts as reference
material or to cite them other than as "work in progress."
This Internet-Draft will expire on November 24, 2012.
Copyright Notice
Copyright (c) 2012 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
Frost, et al. Expires November 24, 2012 [Page 1]
Internet-Draft MPLS G-ACh Advertisement Protocol May 2012
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Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.1. Motivation . . . . . . . . . . . . . . . . . . . . . . . . 3
1.2. Terminology . . . . . . . . . . . . . . . . . . . . . . . 4
1.3. Requirements Language . . . . . . . . . . . . . . . . . . 4
2. Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3. Message Format . . . . . . . . . . . . . . . . . . . . . . . . 5
4. G-ACh Advertisement Protocol TLVs . . . . . . . . . . . . . . 8
4.1. Source Address TLV . . . . . . . . . . . . . . . . . . . . 8
4.2. GAP Request TLV . . . . . . . . . . . . . . . . . . . . . 8
4.3. GAP Flush TLV . . . . . . . . . . . . . . . . . . . . . . 9
4.4. GAP Suppress TLV . . . . . . . . . . . . . . . . . . . . . 9
4.5. GAP Authentication TLV . . . . . . . . . . . . . . . . . . 10
5. Operation . . . . . . . . . . . . . . . . . . . . . . . . . . 10
5.1. G-ACh Advertisement Message Transmission . . . . . . . . . 11
5.2. G-ACh Advertisement Message Reception . . . . . . . . . . 11
6. Message Authentication . . . . . . . . . . . . . . . . . . . . 12
6.1. Authentication Key Identifiers . . . . . . . . . . . . . . 12
6.2. Authentication Process . . . . . . . . . . . . . . . . . . 12
6.3. Hash Computation . . . . . . . . . . . . . . . . . . . . . 13
7. Link-Layer Considerations . . . . . . . . . . . . . . . . . . 15
8. Security Considerations . . . . . . . . . . . . . . . . . . . 15
9. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 15
9.1. Associated Channel Type Allocation . . . . . . . . . . . . 15
9.2. Allocation of Address Family Numbers . . . . . . . . . . . 16
9.3. Creation of G-ACh Advertisement Protocol Application
Registry . . . . . . . . . . . . . . . . . . . . . . . . . 16
9.4. Creation of G-ACh Advertisement Protocol TLV Registry . . 16
10. References . . . . . . . . . . . . . . . . . . . . . . . . . . 17
10.1. Normative References . . . . . . . . . . . . . . . . . . . 17
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