BGP ACCEPT_OWN Community Attribute
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From: The IESG <firstname.lastname@example.org> To: IETF-Announce <email@example.com> Cc: RFC Editor <firstname.lastname@example.org>, bess mailing list <email@example.com>, bess chair <firstname.lastname@example.org> Subject: Protocol Action: 'BGP ACCEPT_OWN Community Attribute' to Proposed Standard (draft-ietf-l3vpn-acceptown-community-10.txt) The IESG has approved the following document: - 'BGP ACCEPT_OWN Community Attribute' (draft-ietf-l3vpn-acceptown-community-10.txt) as Proposed Standard This document is the product of the BGP Enabled Services Working Group. The IESG contact persons are Alvaro Retana, Alia Atlas and Deborah Brungard. A URL of this Internet Draft is: https://datatracker.ietf.org/doc/draft-ietf-l3vpn-acceptown-community/
Technical Summary Under certain conditions it is desirable for a BGP route reflector to be able to modify the Route Target list of a VPN route that is distributed by the route reflector, enabling the route reflector to control how a route originated within one VRF is imported into other VRFs. This technique works effectively as long as the VRF that exports the route is not on the same PE as the VRF(s) that import the route. However, due to the constraints of the BGP protocol, it does not work if the two are on the same PE. This document describes a modification to the BGP protocol allowing this technique to work when the VRFs are on the same PE, allowing the technique to be used in a standard manner throughout an autonomous system. Working Group Summary: Opposition to the proposal was initially expressed by one contributor, but there was good support for adoption and no particular follow-up from that contributor. Document Quality: The specs are clear and concise, and document a fairly straightforward optional change to the BGP protocol procedures. The document was discussed in both l3vpn and idr working groups. These specs have been implemented at least in Cisco's IOS XR with field deployment. Personnel: Thomas Morin is the Document Shepherd. Alvaro Retana is the responsible AD.