RSVP-TE Recovery Extension for data plane initiated reversion, and protection timer signaling
draft-takacs-ccamp-revertive-ps-11

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Last updated 2015-07-06
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Network Working Group                                          A. Takacs
Internet-Draft                                               F. Fondelli
Intended status: Standards Track                             B. Tremblay
Expires: January 5, 2016                                        Ericsson
                                                                  Z. Ali
                                                           Cisco Systems
                                                            July 6, 2015

    RSVP-TE Recovery Extension for data plane initiated reversion,
                   and protection timer signaling
                 draft-takacs-ccamp-revertive-ps-11

Abstract

   RSVP-TE recovery extensions are specified in [RFC4872] and
   [RFC4873].  Currently recovery signaling does not support the
   request for revertive protection and recovery timers values. This
   document extends the PROTECTION Object format allowing sub-TLVs, and
   defines two sub-TLVs to carry wait-to-restore and hold-off
   intervals.

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Requirements Language

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
   document are to be interpreted as described in

Status of this Memo

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

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   This Internet-Draft will expire on January 2016.

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Table of Contents

   1.  Introduction . . . . . . . . . . . . . . . . . . . . . . . . .  4
   2.  Updated PROTECTION Object format and sub-TLVs  . . . . . . . .  6
   3.  Error handling . . . . . . . . . . . . . . . . . . . . . . . .  9
   4.  IANA Considerations  . . . . . . . . . . . . . . . . . . . . . 10
   5.  Security Considerations  . . . . . . . . . . . . . . . . . . . 11
   6.  References . . . . . . . . . . . . . . . . . . . . . . . . . . 12
   Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . . 13

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1.  Introduction

   Generalized MPLS (GMPLS) extends MPLS to include support for
   different switching technologies [RFC3471].  These switching
   technologies provide several protection schemes [RFC4426][RFC4427]
   (e.g. 1+1, 1:N, M:N).  Many characteristics of those protection
   schemes are common regardless of the switching technology (e.g.  TDM,
   LSC, etc).  GMPLS RSVP-TE signaling has been extended to support the
   various protection schemes and establish Label Switched
   Paths (LSPs) configuring its specific protection characteristics
   [RFC4426][RFC4872].

   Currently RSVP-TE extensions do not address the values of
   protection switching timers.  It also does not provide information on
   the protection switching operation mode (i.e., revertive or non-
   revertive) and sub-network connection (SNC) protection options.

   The Hold-off time (HOFF) is defined as the time between the reporting
   of signal fail or degrade, and the initialization of the recovery
   switching operation [RFC4427].  This timer is useful to limit the
   number of switch actions when multiple layers of recovery are being
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