Mitigating the Negative Impact of Maintenance through BGP Session Culling
RFC 8327
Document | Type |
RFC - Best Current Practice
(March 2018; Errata)
Also known as BCP 214
|
|
---|---|---|---|
Authors | Will Hargrave , Matt Griswold , Job Snijders , Nick Hilliard | ||
Last updated | 2020-01-21 | ||
Replaces | draft-iops-grow-bgp-session-culling | ||
Stream | IETF | ||
Formats | plain text html pdf htmlized with errata bibtex | ||
Reviews | |||
Stream | WG state | Submitted to IESG for Publication | |
Document shepherd | Chris Morrow | ||
Shepherd write-up | Show (last changed 2017-09-06) | ||
IESG | IESG state | RFC 8327 (Best Current Practice) | |
Consensus Boilerplate | Yes | ||
Telechat date | |||
Responsible AD | Warren Kumari | ||
Send notices to | Christopher Morrow <christopher.morrow@gmail.com> | ||
IANA | IANA review state | IANA OK - No Actions Needed | |
IANA action state | No IANA Actions |
Internet Engineering Task Force (IETF) W. Hargrave Request for Comments: 8327 LONAP BCP: 214 M. Griswold Category: Best Current Practice 20C ISSN: 2070-1721 J. Snijders NTT N. Hilliard INEX March 2018 Mitigating the Negative Impact of Maintenance through BGP Session Culling Abstract This document outlines an approach to mitigate the negative impact on networks resulting from maintenance activities. It includes guidance for both IP networks and Internet Exchange Points (IXPs). The approach is to ensure BGP-4 sessions that will be affected by maintenance are forcefully torn down before the actual maintenance activities commence. Status of This Memo This memo documents an Internet Best Current Practice. This document is a product of the Internet Engineering Task Force (IETF). It represents the consensus of the IETF community. It has received public review and has been approved for publication by the Internet Engineering Steering Group (IESG). Further information on BCPs is available in Section 2 of RFC 7841. Information about the current status of this document, any errata, and how to provide feedback on it may be obtained at https://www.rfc-editor.org/info/rfc8327. Hargrave, et al. Best Current Practice [Page 1] RFC 8327 BGP Session Culling March 2018 Copyright Notice Copyright (c) 2018 IETF Trust and the persons identified as the document authors. All rights reserved. This document is subject to BCP 78 and the IETF Trust's Legal Provisions Relating to IETF Documents (https://trustee.ietf.org/license-info) in effect on the date of publication of this document. Please review these documents carefully, as they describe your rights and restrictions with respect to this document. Code Components extracted from this document must include Simplified BSD License text as described in Section 4.e of the Trust Legal Provisions and are provided without warranty as described in the Simplified BSD License. Table of Contents 1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 3 2. Requirements Language . . . . . . . . . . . . . . . . . . . . 3 3. BGP Session Culling . . . . . . . . . . . . . . . . . . . . . 3 3.1. Voluntary BGP Session Teardown Recommendations . . . . . 4 3.1.1. Maintenance Considerations . . . . . . . . . . . . . 4 3.2. Involuntary BGP Session Teardown Recommendations . . . . 4 3.2.1. Packet-Filter Considerations . . . . . . . . . . . . 5 3.2.2. Hardware Considerations . . . . . . . . . . . . . . . 5 3.3. Procedural Considerations . . . . . . . . . . . . . . . . 6 4. Security Considerations . . . . . . . . . . . . . . . . . . . 6 5. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 6 6. References . . . . . . . . . . . . . . . . . . . . . . . . . 7 6.1. Normative References . . . . . . . . . . . . . . . . . . 7 6.2. Informative References . . . . . . . . . . . . . . . . . 7 Appendix A. Example Packet Filters . . . . . . . . . . . . . . . 8 A.1. Example Configuration for Cisco IOS, IOS XR, and Arista EOS . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 A.2. Example Configuration for Nokia SR OS . . . . . . . . . . 9 Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . . . 10 Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 10 Hargrave, et al. Best Current Practice [Page 2] RFC 8327 BGP Session Culling March 2018 1. Introduction BGP Session Culling is the practice of ensuring BGP sessions are forcefully torn down before maintenance activities on a lower-layer network commence -- activities that otherwise would affect the flow of data between the BGP speakers. BGP Session Culling is the practice of ensuring BGP sessions are forcefully torn down before commencing maintenance activities (that otherwise would affect the flow of data between the BGP speakers) on a lower-layer network. BGP Session Culling minimizes the amount of disruption that lower- layer network maintenance activities cause, by making BGP speakers preemptively converge onto alternative paths while the lower-layer network's forwarding plane remains fully operational.Show full document text