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IETF 94 Yokohama, Japan Yang Data Model for RIB Extensions

This document proposes a data model and requirements for extending the Routing Information Base (RIB) to support multi-path routing, including multiple next-hops and other attributes.

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IETF 94 Yokohama, Japan Yang Data Model for RIB Extensions

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  1. IETF 94 Yokohama, JapanYang Data Model for RIB Extensions AceeLindem, Cisco Yingzhen Qu, Cisco

  2. Requirements • Routing Information Base (RIB) is an entity that contains routes. • ROUTING-CFG model defines the basic building blocks for RIB • Augmenting to support multiple next-hops, as well as other attributes

  3. Next-Hop in routing-cfg model +--ro route* +--ro route-preference? route-preference +--ronext-hop | +--ro (next-hop-options) | +--:(outgoing-interface) | | +--rooutgoing-interface? if:interface-state-ref | +--:(special-next-hop) | | +--rospecial-next-hop? enumeration | +--:(next-hop-address) | | +--ro v4ur:next-hop-address? inet:ipv4-address | +--:(next-hop-address) | +--ro v6ur:next-hop-address? inet:ipv6-address

  4. Multiple next-hops +--:(multi-paths) +--rorib:path-entries* +--rorib:interface? Leafref +--rorib:adress? inet:ip-address

  5. Route/Path Attributes • Only route-preference is defined in routing-cfgmode • Metric • Tag • Repair Path

  6. Repair path • The loop-free alternate (LFA) Fast Reroute (FRR) repair paths. +--rorib:repair-path +--rorib:interface? Leafref +--rorib:adress? inet:ip-address +--rorib:metric? Uint32 +--rorib:tag? uint32

  7. RIB Extensions Tree +--rorib:metric? Uint32 +--rorib:tag? Uint32 +--rorib:repair-path +--rorib:interface? Leafref +--rorib:adress? inet:ip-address +--rorib:metric? uint32 +--rorib:tag? uint32

  8. Static Route +--:(multi-next-hop) +--rwrib:next-hop-entries* [interface adress] +--rwrib:interfaceif:interface-ref +--rwrib:adress inet:ipv4-address +--rwrib:preference? Uint32 +--rwrib:tag? uint32

  9. Summary • More RIB common attributes are defined. • ROUTING-CFG and RIB-Extensions together define a generic RIB YANG model. • Request WG Adoption

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