Extensions to RSVP-TE for LSP Egress Local Protection
draft-ietf-teas-rsvp-egress-protection-00
Internet Engineering Task Force H. Chen
Internet-Draft Z. Li
Intended status: Standards Track Huawei Technologies
Expires: July 2, 2015 N. So
Tata Communications
A. Liu
Ericsson
T. Saad
Cisco Systems
F. Xu
Verizon
M. Toy
Comcast
L. Huang
China Mobile
L. Liu
UC Davis
December 29, 2014
Extensions to RSVP-TE for LSP Egress Local Protection
draft-ietf-teas-rsvp-egress-protection-00.txt
Abstract
This document describes extensions to Resource Reservation Protocol -
Traffic Engineering (RSVP-TE) for locally protecting egress nodes of
a Traffic Engineered (TE) Label Switched Path (LSP) in a Multi-
Protocol Label Switching (MPLS) and Generalized MPLS (GMPLS) network.
Status of this Memo
This Internet-Draft is submitted to IETF 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
working documents as Internet-Drafts. The list of current Internet-
Drafts is at http://datatracker.ietf.org/drafts/current/.
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 July 2, 2015.
Copyright Notice
Chen, et al. Expires July 2, 2015 [Page 1]
Internet-Draft RSVP LSP Egress Protection December 2014
Copyright (c) 2014 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.
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.1. An Example of Egress Local Protection . . . . . . . . . . 3
1.2. Egress Local Protection with FRR . . . . . . . . . . . . . 4
2. Conventions Used in This Document . . . . . . . . . . . . . . 4
3. Terminology . . . . . . . . . . . . . . . . . . . . . . . . . 4
4. Protocol Extensions . . . . . . . . . . . . . . . . . . . . . 4
4.1. EGRESS_BACKUP Object . . . . . . . . . . . . . . . . . . . 4
4.2. Flags in FAST_REROUTE . . . . . . . . . . . . . . . . . . 6
4.3. Path Message . . . . . . . . . . . . . . . . . . . . . . . 6
5. Egress Protection Behaviors . . . . . . . . . . . . . . . . . 6
5.1. Ingress Behavior . . . . . . . . . . . . . . . . . . . . . 7
5.2. Transit Node and PLR Behavior . . . . . . . . . . . . . . 7
5.2.1. Signaling for One-to-One Protection . . . . . . . . . 8
5.2.2. Signaling for Facility Protection . . . . . . . . . . 8
5.2.3. Signaling for S2L Sub LSP Protection . . . . . . . . . 9
5.2.4. PLR Procedures during Local Repair . . . . . . . . . . 10
6. Considering Application Traffic . . . . . . . . . . . . . . . 10
6.1. A Typical Application . . . . . . . . . . . . . . . . . . 10
6.2. PLR Procedure for Applications . . . . . . . . . . . . . . 11
6.3. Egress Procedures for Applications . . . . . . . . . . . . 12
7. Security Considerations . . . . . . . . . . . . . . . . . . . 12
8. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 12
Show full document text