LDP Extensions to Support Maximally Redundant Trees

The information below is for an old version of the document
Document Type Expired Internet-Draft (individual)
Authors Alia Atlas  , Kishore Tiruveedhula  , Jeff Tantsura  , IJsbrand Wijnands 
Last updated 2014-01-13 (latest revision 2013-07-12)
Replaced by RFC 8320, RFC 8320
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This Internet-Draft is no longer active.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 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 (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)
Kishore Tiruveedhula (kishoret@juniper.net)
Jeff Tantsura (jeff.tantsura@ericsson.com)
IJsbrand Wijnands (ice@cisco.com)

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