< draft-lapukhov-bgp-ecmp-considerations-04.txt   draft-lapukhov-bgp-ecmp-considerations-05.txt >
IDR Working Group P. Lapukhov IDR Working Group P. Lapukhov
Internet-Draft Facebook Internet-Draft Facebook
Intended status: Informational J. Tantsura Intended status: Informational J. Tantsura
Expires: November 18, 2020 Apstra, Inc. Expires: May 19, 2021 Apstra, Inc.
May 17, 2020 November 15, 2020
Equal-Cost Multipath Considerations for BGP Equal-Cost Multipath Considerations for BGP
draft-lapukhov-bgp-ecmp-considerations-04 draft-lapukhov-bgp-ecmp-considerations-05
Abstract Abstract
BGP (Border Gateway Protocol) [RFC4271] employs tie-breaking logic to BGP (Border Gateway Protocol) [RFC4271] employs tie-breaking logic to
select a single best path among multiple paths available, known as select a single best path among multiple paths available, known as
BGP best path selection. At the same time, it has become a common BGP best path selection. At the same time, it has become a common
practice to allow for "equal-cost multipath" (ECMP) selection and practice to allow for "equal-cost multipath" (ECMP) selection and
programming of multiple next-hops in routing tables. This document programming of multiple next-hops in routing tables. This document
summarizes some common considerations for the ECMP logic when BGP is summarizes some common considerations for the ECMP logic when BGP is
used as the routing protocol, with the intent of providing common used as the routing protocol, with the intent of providing common
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