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Egress TLV for Nil FEC in Label Switched Path Ping and Traceroute Mechanisms

Document Type Replaced Internet-Draft (individual)
Expired & archived
Authors Deepti N. Rathi , Kapil Arora , Shraddha Hegde , Zafar Ali , Nagendra Kumar Nainar
Last updated 2021-08-19
Replaced by draft-ietf-mpls-egress-tlv-for-nil-fec
RFC stream (None)
Intended RFC status (None)
Stream Stream state (No stream defined)
Consensus boilerplate Unknown
RFC Editor Note (None)
IESG IESG state Replaced by draft-ietf-mpls-egress-tlv-for-nil-fec
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This Internet-Draft is no longer active.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:


MPLS ping and traceroute mechanism as described in RFC 8029 and related extensions for SR as defined in RFC 8287 is very useful to precisely validate the control plane and data plane synchronization. There is a possibility that all intermediate or transit nodes may not have been upgraded to support these validation procedures. A simple mpls ping and traceroute mechanism comprises of ability to traverse any path without having to validate the control plane state. RFC 8029 supports this mechanism with Nil FEC. The procedures described in RFC 8029 are mostly applicable when the Nil FEC is used as intermediate FEC in the label stack. When all labels in label stack are represented using single Nil FEC, it poses some challenges. This document introduces new TLV as additional extension to exisiting Nil FEC and describes mpls ping and traceroute procedures using Nil FEC with this additional extensions to overcome these challenges.


Deepti N. Rathi
Kapil Arora
Shraddha Hegde
Zafar Ali
Nagendra Kumar Nainar

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