| < draft-ietf-lsvr-bgp-spf-09.txt | draft-ietf-lsvr-bgp-spf-10.txt > | |||
|---|---|---|---|---|
| Network Working Group K. Patel | Network Working Group K. Patel | |||
| Internet-Draft Arrcus, Inc. | Internet-Draft Arrcus, Inc. | |||
| Intended status: Standards Track A. Lindem | Intended status: Standards Track A. Lindem | |||
| Expires: November 16, 2020 Cisco Systems | Expires: January 27, 2021 Cisco Systems | |||
| S. Zandi | S. Zandi | |||
| W. Henderickx | W. Henderickx | |||
| Nokia | Nokia | |||
| May 15, 2020 | July 26, 2020 | |||
| Shortest Path Routing Extensions for BGP Protocol | Shortest Path Routing Extensions for BGP Protocol | |||
| draft-ietf-lsvr-bgp-spf-09 | draft-ietf-lsvr-bgp-spf-10 | |||
| Abstract | Abstract | |||
| Many Massively Scaled Data Centers (MSDCs) have converged on | Many Massively Scaled Data Centers (MSDCs) have converged on | |||
| simplified layer 3 routing. Furthermore, requirements for | simplified layer 3 routing. Furthermore, requirements for | |||
| operational simplicity have led many of these MSDCs to converge on | operational simplicity have led many of these MSDCs to converge on | |||
| BGP as their single routing protocol for both their fabric routing | BGP as their single routing protocol for both their fabric routing | |||
| and their Data Center Interconnect (DCI) routing. This document | and their Data Center Interconnect (DCI) routing. This document | |||
| describes a solution which leverages BGP Link-State distribution and | describes a solution which leverages BGP Link-State distribution and | |||
| the Shortest Path First (SPF) algorithm similar to Internal Gateway | the Shortest Path First (SPF) algorithm similar to Internal Gateway | |||
| skipping to change at page 1, line 42 ¶ | skipping to change at page 1, line 42 ¶ | |||
| Internet-Drafts are working documents of the Internet Engineering | Internet-Drafts are working documents of the Internet Engineering | |||
| Task Force (IETF). Note that other groups may also distribute | Task Force (IETF). Note that other groups may also distribute | |||
| working documents as Internet-Drafts. The list of current Internet- | working documents as Internet-Drafts. The list of current Internet- | |||
| Drafts is at https://datatracker.ietf.org/drafts/current/. | Drafts is at https://datatracker.ietf.org/drafts/current/. | |||
| Internet-Drafts are draft documents valid for a maximum of six months | Internet-Drafts are draft documents valid for a maximum of six months | |||
| and may be updated, replaced, or obsoleted by other documents at any | and may be updated, replaced, or obsoleted by other documents at any | |||
| time. It is inappropriate to use Internet-Drafts as reference | time. It is inappropriate to use Internet-Drafts as reference | |||
| material or to cite them other than as "work in progress." | material or to cite them other than as "work in progress." | |||
| This Internet-Draft will expire on November 16, 2020. | This Internet-Draft will expire on January 27, 2021. | |||
| Copyright Notice | Copyright Notice | |||
| Copyright (c) 2020 IETF Trust and the persons identified as the | Copyright (c) 2020 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 | |||
| skipping to change at page 19, line 22 ¶ | skipping to change at page 19, line 22 ¶ | |||
| be finite, implementations SHOULD also maintain counters for the | be finite, implementations SHOULD also maintain counters for the | |||
| total number of SPF computations of each type and the total number of | total number of SPF computations of each type and the total number of | |||
| SPF triggering events. Additionally, to troubleshoot SPF scheduling | SPF triggering events. Additionally, to troubleshoot SPF scheduling | |||
| and back-off [RFC8405], the current SPF back-off state, remaining | and back-off [RFC8405], the current SPF back-off state, remaining | |||
| time-to-learn, remaining holddown, last trigger event time, last SPF | time-to-learn, remaining holddown, last trigger event time, last SPF | |||
| time, and next SPF time should be available. | time, and next SPF time should be available. | |||
| 9. Acknowledgements | 9. Acknowledgements | |||
| The authors would like to thank Sue Hares, Jorge Rabadan, Boris | The authors would like to thank Sue Hares, Jorge Rabadan, Boris | |||
| Hassanov, Dan Frost, Matt Anderson, and Fred Baker for their review | Hassanov, Dan Frost, Matt Anderson, Fred Baker, and Lukas Krattiger | |||
| and comments. Thanks to Chaitanya Yadlapalli and Pushpasis Sarkar | for their review and comments. Thanks to Pushpasis Sarkar for | |||
| for discussions on preventing a BGP SPF Router from being used for | discussions on preventing a BGP SPF Router from being used for non- | |||
| non-local traffic (i.e., transit traffic). | local traffic (i.e., transit traffic). | |||
| The authors extend special thanks to Eric Rosen for fruitful | The authors extend special thanks to Eric Rosen for fruitful | |||
| discussions on BGP-LS SPF convergence as compared to IGPs. | discussions on BGP-LS SPF convergence as compared to IGPs. | |||
| 10. Contributors | 10. Contributors | |||
| In addition to the authors listed on the front page, the following | In addition to the authors listed on the front page, the following | |||
| co-authors have contributed to the document. | co-authors have contributed to the document. | |||
| Derek Yeung | Derek Yeung | |||
| Arrcus, Inc. | Arrcus, Inc. | |||
| derek@arrcus.com | derek@arrcus.com | |||
| Gunter Van De Velde | Gunter Van De Velde | |||
| Nokia | Nokia | |||
| gunter.van_de_velde@nokia.com | gunter.van_de_velde@nokia.com | |||
| Abhay Roy | Abhay Roy | |||
| Cisco Systems | Arrcus, Inc. | |||
| akr@cisco.com | abhay@arrcus.com | |||
| Venu Venugopal | Venu Venugopal | |||
| Cisco Systems | Cisco Systems | |||
| venuv@cisco.com | venuv@cisco.com | |||
| Chaitanya Yadlapalli | ||||
| AT&T | ||||
| cy098d@att.com | ||||
| 11. References | 11. References | |||
| 11.1. Normative References | 11.1. Normative References | |||
| [I-D.ietf-idr-bgpls-segment-routing-epe] | [I-D.ietf-idr-bgpls-segment-routing-epe] | |||
| Previdi, S., Talaulikar, K., Filsfils, C., Patel, K., Ray, | Previdi, S., Talaulikar, K., Filsfils, C., Patel, K., Ray, | |||
| S., and J. Dong, "BGP-LS extensions for Segment Routing | S., and J. Dong, "BGP-LS extensions for Segment Routing | |||
| BGP Egress Peer Engineering", draft-ietf-idr-bgpls- | BGP Egress Peer Engineering", draft-ietf-idr-bgpls- | |||
| segment-routing-epe-19 (work in progress), May 2019. | segment-routing-epe-19 (work in progress), May 2019. | |||
| End of changes. 7 change blocks. | ||||
| 10 lines changed or deleted | 14 lines changed or added | |||
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