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OSPF Extensions to Support Maximally Redundant Trees

Document Type Expired Internet-Draft (ospf WG)
Expired & archived
Authors Alia Atlas , Shraddha Hegde , Chris Bowers , Jeff Tantsura , Zhenbin Li
Last updated 2018-01-01 (Latest revision 2017-06-30)
Replaces draft-atlas-ospf-mrt
RFC stream Internet Engineering Task Force (IETF)
Intended RFC status (None)
Additional resources Mailing list discussion
Stream WG state WG Document
Document shepherd (None)
IESG IESG state Expired
Consensus boilerplate Unknown
Telechat date (None)
Responsible AD (None)
Send notices to (None)

This Internet-Draft is no longer active. A copy of the expired Internet-Draft is available in these formats:


This document specifies extensions to OSPF to support the distributed computation of Maximally Redundant Trees (MRT). Some example uses of the MRTs include IP/LDP Fast-Reroute and global protection or live- live for multicast traffic. The extensions indicate what MRT profile(s) each router supports. Different MRT profiles can be defined to support different uses and to allow transitioning of capabilities. An extension is introduced to flood MRT-Ineligible links, due to administrative policy. The need for a mechanism to allow routers to advertise a worst-case FIB compute/install time is well understood for controlling convergence. This specification introduces the Controlled Convergence TLV to be carried in the Router Information LSA.


Alia Atlas
Shraddha Hegde
Chris Bowers
Jeff Tantsura
Zhenbin Li

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