rfc8966v6.txt   rfc8966.txt 
Internet Engineering Task Force (IETF) J. Chroboczek Internet Engineering Task Force (IETF) J. Chroboczek
Request for Comments: 8966 IRIF, University of Paris-Diderot Request for Comments: 8966 IRIF, University of Paris-Diderot
Obsoletes: 6126, 7557 D. Schinazi Obsoletes: 6126, 7557 D. Schinazi
Category: Standards Track Google LLC Category: Standards Track Google LLC
ISSN: 2070-1721 December 2020 ISSN: 2070-1721 January 2021
The Babel Routing Protocol The Babel Routing Protocol
Abstract Abstract
Babel is a loop-avoiding, distance-vector routing protocol that is Babel is a loop-avoiding, distance-vector routing protocol that is
robust and efficient both in ordinary wired networks and in wireless robust and efficient both in ordinary wired networks and in wireless
mesh networks. This document describes the Babel routing protocol mesh networks. This document describes the Babel routing protocol
and obsoletes RFC 6126 and RFC 7557. and obsoletes RFC 6126 and RFC 7557.
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received public review and has been approved for publication by the received public review and has been approved for publication by the
Internet Engineering Steering Group (IESG). Further information on Internet Engineering Steering Group (IESG). Further information on
Internet Standards is available in Section 2 of RFC 7841. Internet Standards is available in Section 2 of RFC 7841.
Information about the current status of this document, any errata, Information about the current status of this document, any errata,
and how to provide feedback on it may be obtained at and how to provide feedback on it may be obtained at
https://www.rfc-editor.org/info/rfc8966. https://www.rfc-editor.org/info/rfc8966.
Copyright Notice Copyright Notice
Copyright (c) 2020 IETF Trust and the persons identified as the Copyright (c) 2021 IETF Trust and the persons identified as the
document authors. All rights reserved. document authors. All rights reserved.
This document is subject to BCP 78 and the IETF Trust's Legal This document is subject to BCP 78 and the IETF Trust's Legal
Provisions Relating to IETF Documents Provisions Relating to IETF Documents
(https://trustee.ietf.org/license-info) in effect on the date of (https://trustee.ietf.org/license-info) in effect on the date of
publication of this document. Please review these documents publication of this document. Please review these documents
carefully, as they describe your rights and restrictions with respect carefully, as they describe your rights and restrictions with respect
to this document. Code Components extracted from this document must to this document. Code Components extracted from this document must
include Simplified BSD License text as described in Section 4.e of include Simplified BSD License text as described in Section 4.e of
the Trust Legal Provisions and are provided without warranty as the Trust Legal Provisions and are provided without warranty as
skipping to change at line 2493 skipping to change at line 2493
Writing an IANA Considerations Section in RFCs", BCP 26, Writing an IANA Considerations Section in RFCs", BCP 26,
RFC 8126, DOI 10.17487/RFC8126, June 2017, RFC 8126, DOI 10.17487/RFC8126, June 2017,
<https://www.rfc-editor.org/info/rfc8126>. <https://www.rfc-editor.org/info/rfc8126>.
[RFC8174] Leiba, B., "Ambiguity of Uppercase vs Lowercase in RFC [RFC8174] Leiba, B., "Ambiguity of Uppercase vs Lowercase in RFC
2119 Key Words", BCP 14, RFC 8174, DOI 10.17487/RFC8174, 2119 Key Words", BCP 14, RFC 8174, DOI 10.17487/RFC8174,
May 2017, <https://www.rfc-editor.org/info/rfc8174>. May 2017, <https://www.rfc-editor.org/info/rfc8174>.
[RFC8967] Dô, C., Kolodziejak, W., and J. Chroboczek, "MAC [RFC8967] Dô, C., Kolodziejak, W., and J. Chroboczek, "MAC
Authentication for the Babel Routing Protocol", RFC 8967, Authentication for the Babel Routing Protocol", RFC 8967,
DOI 10.17487/RFC8967, November 2020, DOI 10.17487/RFC8967, January 2021,
<https://www.rfc-editor.org/info/rfc8967>. <https://www.rfc-editor.org/info/rfc8967>.
7.2. Informative References 7.2. Informative References
[BABEL-DIVERSITY] [BABEL-DIVERSITY]
Chroboczek, J., "Diversity Routing for the Babel Routing Chroboczek, J., "Diversity Routing for the Babel Routing
Protocol", Work in Progress, Internet-Draft, draft- Protocol", Work in Progress, Internet-Draft, draft-
chroboczek-babel-diversity-routing-01, 15 February 2016, chroboczek-babel-diversity-routing-01, 15 February 2016,
<https://tools.ietf.org/html/draft-chroboczek-babel- <https://tools.ietf.org/html/draft-chroboczek-babel-
diversity-routing-01>. diversity-routing-01>.
skipping to change at line 2520 skipping to change at line 2520
ietf-babel-rtt-extension-00>. ietf-babel-rtt-extension-00>.
[BABEL-SS] Boutier, M. and J. Chroboczek, "Source-Specific Routing in [BABEL-SS] Boutier, M. and J. Chroboczek, "Source-Specific Routing in
Babel", Work in Progress, Internet-Draft, draft-ietf- Babel", Work in Progress, Internet-Draft, draft-ietf-
babel-source-specific-07, 28 October 2020, babel-source-specific-07, 28 October 2020,
<https://tools.ietf.org/html/draft-ietf-babel-source- <https://tools.ietf.org/html/draft-ietf-babel-source-
specific-07>. specific-07>.
[DSDV] Perkins, C. and P. Bhagwat, "Highly dynamic Destination- [DSDV] Perkins, C. and P. Bhagwat, "Highly dynamic Destination-
Sequenced Distance-Vector routing (DSDV) for mobile Sequenced Distance-Vector routing (DSDV) for mobile
computers", ACM SIGCOMM'94: Proceedings of the conference computers", ACM SIGCOMM '94: Proceedings of the conference
on Communications architectures, protocols and on Communications architectures, protocols and
applications, 234-244, DOI 10.1145/190314.190336, October applications, 234-244, DOI 10.1145/190314.190336, October
1994, <https://doi.org/10.1145/190314.190336>. 1994, <https://doi.org/10.1145/190314.190336>.
[DUAL] Garcia Luna Aceves, J. J., "Loop-free routing using [DUAL] Garcia Luna Aceves, J. J., "Loop-free routing using
diffusing computations", IEEE/ACM Transactions on diffusing computations", IEEE/ACM Transactions on
Networking, 1:1, DOI 10.1109/90.222913, February 1993, Networking, 1:1, DOI 10.1109/90.222913, February 1993,
<https://doi.org/10.1109/90.222913>. <https://doi.org/10.1109/90.222913>.
[EIGRP] Albrightson, B., Garcia Luna Aceves, J. J., and J. Boyle, [EIGRP] Albrightson, B., Garcia Luna Aceves, J. J., and J. Boyle,
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(HMAC) Cryptographic Authentication", RFC 7298, (HMAC) Cryptographic Authentication", RFC 7298,
DOI 10.17487/RFC7298, July 2014, DOI 10.17487/RFC7298, July 2014,
<https://www.rfc-editor.org/info/rfc7298>. <https://www.rfc-editor.org/info/rfc7298>.
[RFC7557] Chroboczek, J., "Extension Mechanism for the Babel Routing [RFC7557] Chroboczek, J., "Extension Mechanism for the Babel Routing
Protocol", RFC 7557, DOI 10.17487/RFC7557, May 2015, Protocol", RFC 7557, DOI 10.17487/RFC7557, May 2015,
<https://www.rfc-editor.org/info/rfc7557>. <https://www.rfc-editor.org/info/rfc7557>.
[RFC8968] Décimo, A., Schinazi, D., and J. Chroboczek, "Babel [RFC8968] Décimo, A., Schinazi, D., and J. Chroboczek, "Babel
Routing Protocol over Datagram Transport Layer Security", Routing Protocol over Datagram Transport Layer Security",
RFC 8968, DOI 10.17487/RFC8968, November 2020, RFC 8968, DOI 10.17487/RFC8968, January 2021,
<https://www.rfc-editor.org/info/rfc8968>. <https://www.rfc-editor.org/info/rfc8968>.
[RIP] Malkin, G., "RIP Version 2", STD 56, RFC 2453, [RIP] Malkin, G., "RIP Version 2", STD 56, RFC 2453,
DOI 10.17487/RFC2453, November 1998, DOI 10.17487/RFC2453, November 1998,
<https://www.rfc-editor.org/info/rfc2453>. <https://www.rfc-editor.org/info/rfc2453>.
Appendix A. Cost and Metric Computation Appendix A. Cost and Metric Computation
The strategy for computing link costs and route metrics is a local The strategy for computing link costs and route metrics is a local
matter; Babel itself only requires that it comply with the conditions matter; Babel itself only requires that it comply with the conditions
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