LDP Extensions to Support Maximally Redundant Trees

Document Type Replaced Internet-Draft (mpls WG)
Authors Alia Atlas  , Alia Atlas  , Kishore Tiruveedhula  , Kishore Tiruveedhula  , Chris Bowers  , Chris Bowers  , Jeff Tantsura  , Jeff Tantsura  , IJsbrand Wijnands  , IJsbrand Wijnands 
Last updated 2014-12-15
Replaced by RFC 8320, RFC 8320
Stream Internet Engineering Task Force (IETF)
Expired & archived
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Additional Resources
- Mailing list discussion
Stream WG state Adopted by a WG
Document shepherd Loa Andersson
IESG IESG state Replaced by draft-ietf-mpls-ldp-mrt, draft-ietf-mpls-ldp-mrt
Consensus Boilerplate Unknown
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


This document specifies extensions to the Label Distribution Protocol(LDP) to support the creation of label-switched paths for Maximally Redundant Trees (MRT). A prime use of MRTs is for unicast and multicast IP/LDP Fast-Reroute, which we will refer to as MRT-FRR. The sole protocol extension to LDP is simply the ability to advertise an MRT Capability. This document describes that extension and the associated behavior expected for LSRs and LERs advertising the MRT Capability. MRT-FRR uses LDP multi-topology extensions and requires three different multi-topology IDs to be allocated from the LDP MT-ID space.


Alia Atlas (akatlas@juniper.net)
Alia Atlas (akatlas@juniper.net)
Kishore Tiruveedhula (kishoret@juniper.net)
Kishore Tiruveedhula (kishoret@juniper.net)
Chris Bowers (cbowers@juniper.net)
Chris Bowers (cbowers@juniper.net)
Jeff Tantsura (jeff.tantsura@ericsson.com)
Jeff Tantsura (jeff.tantsura@ericsson.com)
IJsbrand Wijnands (ice@cisco.com)
IJsbrand Wijnands (ice@cisco.com)

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)