Carrying next-hop cost information in BGP

Document Type Expired Internet-Draft (idr WG)
Last updated 2015-11-17 (latest revision 2015-05-16)
Stream IETF
Intended RFC status (None)
Expired & archived
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Stream WG state WG Document
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IESG IESG state Expired
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


BGPLS provides a mechanism by which Link state and traffic engineering information can be collected from internal networks and shared with external network routers using BGP. BGPLS defines a new Address Family to exchange this information using BGP. BGP Optimal Route Reflection (ORR) provides a mechanism for a centralized BGP Route Reflector to acheive requirements of a Hot Potato Routing as described in Section 11 of [RFC4456]. Optimal Route Reflection requires BGP ORR to overwrite the default IGP location placement of the route reflector; which is used for determining cost to the nexthop contained in the path. This draft augments BGPLS and defines a new extensions to exchange cost information to next-hops for the purpose of calculating best path from a peer perspective rather than local BGP speaker own perspective.


Ilya Varlashkin (
Robert Raszuk (
Keyur Patel (
Manish Bhardwaj (
Serpil Bayraktar (

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)