BIER MTU Discovery

Document Type Expired Internet-Draft (bier WG)
Authors Stig Venaas  , IJsbrand Wijnands  , Les Ginsberg  , Mahesh Sivakumar 
Last updated 2019-08-31 (latest revision 2019-02-27)
Stream Internet Engineering Task Force (IETF)
Expired & archived
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Stream WG state WG Document
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IESG IESG state Expired
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


This document defines an IGP based mechanism for discovering the MTU of a BIER sub-domain. This document defines extensions to OSPF and IS-IS, but other protocols could potentially be extended. MTU discovery is usually done for a given path, while this document defines it for a sub-domain. This allows the computed MTU to be independent of the set of receivers. Also, the MTU is independent of rerouting events within the sub-domain.


Stig Venaas (
IJsbrand Wijnands (
Les Ginsberg (
Mahesh Sivakumar (

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