Segment-Routing over Forwarding Adjacency Links

Document Type Expired Internet-Draft (individual)
Authors Tarek Saad  , Vishnu Beeram  , Colby Barth  , Siva Sivabalan 
Last updated 2021-08-19 (latest revision 2021-02-15)
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Label Switched Paths (LSPs) set up in Multiprotocol Label Switching (MPLS) networks can be used to form Forwarding Adjacency (FA) links that carry traffic in those networks. An FA link can be assigned Traffic Engineering (TE) parameters that allow other LSR(s) to include it in their constrained path computation. FA link(s) can be also assigned Segment-Routing (SR) segments that enable the steering of traffic on to the associated FA link(s). The TE and SR attributes of an FA link can be advertised using known protocols that carry link state information. This document elaborates on the usage of FA link(s) and their attributes in SR enabled networks.


Tarek Saad (
Vishnu Beeram (
Colby Barth (
Siva Sivabalan (

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