BGP-LS Extensions for In-situ Flow Information Telemetry (IFIT) Capability Advertisement

Document Type Expired Internet-Draft (individual)
Authors Yali Wang  , Tianran Zhou  , Liu Min  , Ran Pang  , Huanan Chen 
Last updated 2021-01-14 (latest revision 2020-07-13)
Replaces draft-wang-lsr-ifit-node-capability-advertisement
Stream (None)
Intended RFC status (None)
Expired & archived
pdf htmlized bibtex
Stream Stream state (No stream defined)
Consensus Boilerplate Unknown
RFC Editor Note (None)
IESG IESG state Expired
Telechat date
Responsible AD (None)
Send notices to (None)

This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


This document extends Node and Link Attribute TLVs to Border Gateway Protocol-Link State (BGP-LS) to advertise supported In-situ Flow Information Telemetry (IFIT) capabilities at node and/or link granularity. An ingress router cannot insert IFIT-Data-Fields for packets going into a path unless an egress router has indicated via signaling that it has the capability to process IFIT-Data-Fields. In addition, such advertisements would be useful for entities (e.g. Path Computation Element (PCE)) to gather each router's IFIT capability for achieving the computation of end-to-end Traffic Engineering (TE) paths that be able to fulfill the visibility of on- path OAM data.


Yali Wang (
Tianran Zhou (
Liu Min (
Ran Pang (
Huanan Chen (

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