rfc9703v4.txt   rfc9703.txt 
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Plane Plane
Abstract Abstract
Egress Peer Engineering (EPE) is an application of Segment Routing Egress Peer Engineering (EPE) is an application of Segment Routing
(SR) that solves the problem of egress peer selection. The SR-based (SR) that solves the problem of egress peer selection. The SR-based
BGP-EPE solution allows a centralized controller, e.g., a Software- BGP-EPE solution allows a centralized controller, e.g., a Software-
Defined Network (SDN) controller, to program any egress peer. The Defined Network (SDN) controller, to program any egress peer. The
EPE solution requires the node or the SDN controller to program 1) EPE solution requires the node or the SDN controller to program 1)
the PeerNode Segment Identifier (SID) describing a session between the PeerNode Segment Identifier (SID) describing a session between
two nodes, 2) the PeerAdj SID sub-TLV describing the link or links two nodes, 2) the PeerAdj SID describing the link or links that are
that are used by the sessions between peer nodes, and 3) the PeerSet used by the sessions between peer nodes, and 3) the PeerSet SID
SID describing any connected interface to any peer in the related describing any connected interface to any peer in the related group.
group. This document provides new sub-TLVs for EPE-SIDs that are This document provides new sub-TLVs for EPE-SIDs that are used in the
used in the Target FEC Stack TLV (Type 1) in MPLS Ping and Traceroute Target FEC Stack TLV (Type 1) in MPLS Ping and Traceroute procedures.
procedures.
Status of This Memo Status of This Memo
This is an Internet Standards Track document. This is an Internet Standards Track document.
This document is a product of the Internet Engineering Task Force This document is a product of the Internet Engineering Task Force
(IETF). It represents the consensus of the IETF community. It has (IETF). It represents the consensus of the IETF community. It has
received public review and has been approved for publication by the received public review and has been approved for publication by the
Internet Engineering Steering Group (IESG). Further information on Internet Engineering Steering Group (IESG). Further information on
Internet Standards is available in Section 2 of RFC 7841. Internet Standards is available in Section 2 of RFC 7841.
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