[Idr] I-D Action: draft-ietf-idr-bgp-open-policy-17.txt
internet-drafts@ietf.org Wed, 13 October 2021 20:58 UTC
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Date: Wed, 13 Oct 2021 13:58:13 -0700
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Subject: [Idr] I-D Action: draft-ietf-idr-bgp-open-policy-17.txt
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A New Internet-Draft is available from the on-line Internet-Drafts directories. This draft is a work item of the Inter-Domain Routing WG of the IETF. Title : Route Leak Prevention and Detection using Roles in UPDATE and OPEN Messages Authors : Alexander Azimov Eugene Bogomazov Randy Bush Keyur Patel Kotikalapudi Sriram Filename : draft-ietf-idr-bgp-open-policy-17.txt Pages : 13 Date : 2021-10-13 Abstract: Route leaks are the propagation of BGP prefixes that violate assumptions of BGP topology relationships, e.g., announcing a route learned from one transit provider to another transit provider or a lateral (i.e., non-transit) peer or announcing a route learned from one lateral peer to another lateral peer or a transit provider. These are usually the result of misconfigured or absent BGP route filtering or lack of coordination between autonomous systems (ASes). Existing approaches to leak prevention rely on marking routes by operator configuration, with no check that the configuration corresponds to that of the eBGP neighbor, or enforcement that the two eBGP speakers agree on the relationship. This document enhances the BGP OPEN message to establish an agreement of the relationship on each eBGP session between autonomous systems in order to enforce appropriate configuration on both sides. Propagated routes are then marked according to the agreed relationship, allowing both prevention and detection of route leaks. The IETF datatracker status page for this draft is: https://datatracker.ietf.org/doc/draft-ietf-idr-bgp-open-policy/ There is also an htmlized version available at: https://datatracker.ietf.org/doc/html/draft-ietf-idr-bgp-open-policy-17 A diff from the previous version is available at: https://www.ietf.org/rfcdiff?url2=draft-ietf-idr-bgp-open-policy-17 Internet-Drafts are also available by anonymous FTP at: ftp://ftp.ietf.org/internet-drafts/
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