rfc9655v2.txt   rfc9655.txt 
Internet Engineering Task Force (IETF) D. Rathi, Ed. Internet Engineering Task Force (IETF) D. Rathi, Ed.
Request for Comments: 9655 Nokia Request for Comments: 9655 Nokia
Category: Standards Track S. Hegde, Ed. Category: Standards Track S. Hegde, Ed.
ISSN: 2070-1721 Juniper Networks Inc. ISSN: 2070-1721 Juniper Networks Inc.
K. Arora K. Arora
Individual Contributor Individual Contributor
Z. Ali Z. Ali
N. Nainar N. Nainar
Cisco Systems, Inc. Cisco Systems, Inc.
September 2024 November 2024
Egress Validation in Label Switched Path Ping and Traceroute Mechanisms Egress Validation in Label Switched Path Ping and Traceroute Mechanisms
Abstract Abstract
The MPLS ping and traceroute mechanisms described in RFC 8029 and the The MPLS ping and traceroute mechanisms described in RFC 8029 and the
related extensions for Segment Routing (SR) defined in RFC 8287 are related extensions for Segment Routing (SR) defined in RFC 8287 are
highly valuable for validating control plane and data plane highly valuable for validating control plane and data plane
synchronization. In certain environments, only some intermediate or synchronization. In certain environments, only some intermediate or
transit nodes may have been upgraded to support these validation transit nodes may have been upgraded to support these validation
skipping to change at line 425 skipping to change at line 425
+-------+------------+-----------+ +-------+------------+-----------+
Table 1: TLVs Registry Table 1: TLVs Registry
6.2. New Return Code 6.2. New Return Code
IANA has added the following entry to the "Return Codes" registry IANA has added the following entry to the "Return Codes" registry
within the "Multiprotocol Label Switching (MPLS) Label Switched Paths within the "Multiprotocol Label Switching (MPLS) Label Switched Paths
(LSPs) Ping Parameters" registry group [IANA-MPLS-LSP]: (LSPs) Ping Parameters" registry group [IANA-MPLS-LSP]:
+=======+===================================+===========+ +=======+==================================+===========+
| Value | Meaning | Reference | | Value | Meaning | Reference |
+=======+===================================+===========+ +=======+==================================+===========+
| 36 | Replying router is an egress for | RFC 9655 | | 36 | Replying router is an egress for | RFC 9655 |
| | the address in the Egress TLV for | | | | the address in the Egress TLV | |
| | the FEC at stack depth <RSC>> | | | | for the FEC at stack depth <RSC> | |
+-------+-----------------------------------+-----------+ +-------+----------------------------------+-----------+
Table 2: Return Codes Registry Table 2: Return Codes Registry
7. Security Considerations 7. Security Considerations
This document defines an additional TLV for MPLS LSP ping and This document defines an additional TLV for MPLS LSP ping and
conforms to the mechanisms defined in [RFC8029]. All the security conforms to the mechanisms defined in [RFC8029]. All the security
considerations defined in [RFC8287] apply to this document. This considerations defined in [RFC8287] apply to this document. This
document does not introduce any additional security challenges to be document does not introduce any additional security challenges to be
considered. considered.
8. References 8. References
skipping to change at line 496 skipping to change at line 496
[IANA-MPLS-LSP] [IANA-MPLS-LSP]
IANA, "Multiprotocol Label Switching (MPLS) Label Switched IANA, "Multiprotocol Label Switching (MPLS) Label Switched
Paths (LSPs) Ping Parameters", Paths (LSPs) Ping Parameters",
<http://www.iana.org/assignments/mpls-lsp-ping- <http://www.iana.org/assignments/mpls-lsp-ping-
parameters>. parameters>.
[SR-POLICY-BGP] [SR-POLICY-BGP]
Previdi, S., Filsfils, C., Talaulikar, K., Ed., Mattes, Previdi, S., Filsfils, C., Talaulikar, K., Ed., Mattes,
P., and D. Jain, "Advertising Segment Routing Policies in P., and D. Jain, "Advertising Segment Routing Policies in
BGP", Work in Progress, Internet-Draft, draft-ietf-idr-sr- BGP", Work in Progress, Internet-Draft, draft-ietf-idr-sr-
policy-safi-06, 26 July 2024, policy-safi-10, 7 November 2024,
<https://datatracker.ietf.org/doc/html/draft-ietf-idr-sr- <https://datatracker.ietf.org/doc/html/draft-ietf-idr-sr-
policy-safi-06>. policy-safi-10>.
Acknowledgements Acknowledgements
The authors would like to thank Stewart Bryant, Greg Mirsky, The authors would like to thank Stewart Bryant, Greg Mirsky,
Alexander Vainshtein, Sanga Mitra Rajgopal, and Adrian Farrel for Alexander Vainshtein, Sanga Mitra Rajgopal, and Adrian Farrel for
their careful review and comments. their careful review and comments.
Authors' Addresses Authors' Addresses
Deepti N. Rathi (editor) Deepti N. Rathi (editor)
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