Extensions to RSVP-TE for LSP Egress Local Protection
draft-ietf-teas-rsvp-egress-protection-04
Internet Engineering Task Force H. Chen
Internet-Draft Huawei Technologies
Intended status: Standards Track A. Liu
Expires: September 19, 2016 Ericsson
T. Saad
Cisco Systems
F. Xu
Verizon
L. Huang
China Mobile
N. So
Tata Communications
March 18, 2016
Extensions to RSVP-TE for LSP Egress Local Protection
draft-ietf-teas-rsvp-egress-protection-04.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), which is a
Point-to-Point (P2P) LSP or a Point-to-Multipoint (P2MP) LSP.
Status of this Memo
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This Internet-Draft will expire on September 19, 2016.
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This document is subject to BCP 78 and the IETF Trust's Legal
Chen, et al. Expires September 19, 2016 [Page 1]
Internet-Draft RSVP LSP Egress Protection March 2016
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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. Extensions to SERO . . . . . . . . . . . . . . . . . . . . 4
4.1.1. Primary Egress Subobject . . . . . . . . . . . . . . . 6
4.1.2. P2P LSP ID Subobject . . . . . . . . . . . . . . . . . 7
4.1.3. Opaque Data Subobject . . . . . . . . . . . . . . . . 8
5. Egress Protection Behaviors . . . . . . . . . . . . . . . . . 8
5.1. Ingress Behavior . . . . . . . . . . . . . . . . . . . . . 9
5.2. Primary Egress Behavior . . . . . . . . . . . . . . . . . 9
5.3. Backup Egress Behavior . . . . . . . . . . . . . . . . . . 10
5.4. Transit Node and PLR Behavior . . . . . . . . . . . . . . 10
5.4.1. Signaling for One-to-One Protection . . . . . . . . . 11
5.4.2. Signaling for Facility Protection . . . . . . . . . . 11
5.4.3. Signaling for S2L Sub LSP Protection . . . . . . . . . 12
5.4.4. PLR Procedures during Local Repair . . . . . . . . . . 13
6. Considering Application Traffic . . . . . . . . . . . . . . . 13
6.1. A Typical Application . . . . . . . . . . . . . . . . . . 14
6.2. PLR Procedure for Applications . . . . . . . . . . . . . . 15
6.3. Egress Procedures for Applications . . . . . . . . . . . . 15
7. Security Considerations . . . . . . . . . . . . . . . . . . . 15
8. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 15
8.1. Definition of PROTECTION Object Reserved Bits . . . . . . 16
8.2. New Subobjects . . . . . . . . . . . . . . . . . . . . . . 16
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