[Idr] Last Call: <draft-ietf-idr-bgp-flowspec-oid-13.txt> (Revised Validation Procedure for BGP Flow Specifications) to Proposed Standard
The IESG <iesg-secretary@ietf.org> Tue, 20 April 2021 19:22 UTC
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CC: Susan Hares <shares@ndzh.com>, aretana.ietf@gmail.com, draft-ietf-idr-bgp-flowspec-oid@ietf.org, idr-chairs@ietf.org, idr@ietf.org, shares@ndzh.com
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Date: Tue, 20 Apr 2021 12:22:16 -0700
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Subject: [Idr] Last Call: <draft-ietf-idr-bgp-flowspec-oid-13.txt> (Revised Validation Procedure for BGP Flow Specifications) to Proposed Standard
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The IESG has received a request from the Inter-Domain Routing WG (idr) to consider the following document: - 'Revised Validation Procedure for BGP Flow Specifications' <draft-ietf-idr-bgp-flowspec-oid-13.txt> as Proposed Standard The IESG plans to make a decision in the next few weeks, and solicits final comments on this action. Please send substantive comments to the last-call@ietf.org mailing lists by 2021-05-05. Exceptionally, comments may be sent to iesg@ietf.org instead. In either case, please retain the beginning of the Subject line to allow automated sorting. Abstract This document describes a modification to the validation procedure defined for the dissemination of BGP Flow Specifications. The dissemination of BGP Flow Specifications requires that the originator of the Flow Specification matches the originator of the best-match unicast route for the destination prefix embedded in the Flow Specification. For an iBGP received route, the originator is typically a border router within the same autonomous system. The objective is to allow only BGP speakers within the data forwarding path to originate BGP Flow Specifications. Sometimes it is desirable to originate the BGP Flow Specification any place within the autonomous system itself, for example, from a centralized BGP route controller. However, the validation procedure will fail in this scenario. The modification proposed herein relaxes the validation rule to enable Flow Specifications to be originated within the same autonomous system as the BGP speaker performing the validation. Additionally, this document revises AS_PATH validation rules so Flow Specifications received from an eBGP peer can be validated when such peer is a BGP route server. This document updates the validation procedure in RFC8955. The file can be obtained via https://datatracker.ietf.org/doc/draft-ietf-idr-bgp-flowspec-oid/ No IPR declarations have been submitted directly on this I-D.