Routing Information Base Info Model
draft-ietf-i2rs-rib-info-model-12

Document Type Active Internet-Draft (i2rs WG)
Last updated 2017-11-22
Replaces draft-nitinb-i2rs-rib-info-model
Stream IETF
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Network Working Group                                    N. Bahadur, Ed.
Internet-Draft                                         Bracket Computing
Intended status: Informational                              S. Kini, Ed.
Expires: May 26, 2018
                                                               J. Medved
                                                                   Cisco
                                                       November 22, 2017

                  Routing Information Base Info Model
                   draft-ietf-i2rs-rib-info-model-12

Abstract

   Routing and routing functions in enterprise and carrier networks are
   typically performed by network devices (routers and switches) using a
   routing information base (RIB).  Protocols and configuration push
   data into the RIB and the RIB manager installs state into the
   hardware; for packet forwarding.  This draft specifies a information
   model for the RIB to enable defining a standardized data model.  Such
   a data model can be used to define an interface to the RIB from an
   entity that may even be external to the network device.  This
   interface can be used to support new use-cases being defined by the
   IETF I2RS WG.

Status of this Memo

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

   Internet-Drafts are working documents of the Internet Engineering
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   This Internet-Draft will expire on May 26, 2018.

Copyright Notice

   Copyright (c) 2017 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

   This document is subject to BCP 78 and the IETF Trust's Legal

Bahadur, et al.           Expires May 26, 2018                  [Page 1]
Internet-Draft     Routing Information Base Info Model     November 2017

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Table of Contents

   1.  Introduction . . . . . . . . . . . . . . . . . . . . . . . . .  4
     1.1.  Conventions used in this document  . . . . . . . . . . . .  6
   2.  RIB data . . . . . . . . . . . . . . . . . . . . . . . . . . .  6
     2.1.  RIB definition . . . . . . . . . . . . . . . . . . . . . .  6
     2.2.  Routing instance . . . . . . . . . . . . . . . . . . . . .  7
     2.3.  Route  . . . . . . . . . . . . . . . . . . . . . . . . . .  8
     2.4.  Nexthop  . . . . . . . . . . . . . . . . . . . . . . . . .  9
       2.4.1.  Nexthop types  . . . . . . . . . . . . . . . . . . . . 12
       2.4.2.  Nexthop list attributes  . . . . . . . . . . . . . . . 13
       2.4.3.  Nexthop content  . . . . . . . . . . . . . . . . . . . 13
       2.4.4.  Special nexthops . . . . . . . . . . . . . . . . . . . 14
   3.  Reading from the RIB . . . . . . . . . . . . . . . . . . . . . 14
   4.  Writing to the RIB . . . . . . . . . . . . . . . . . . . . . . 15
   5.  Notifications  . . . . . . . . . . . . . . . . . . . . . . . . 15
   6.  RIB grammar  . . . . . . . . . . . . . . . . . . . . . . . . . 16
     6.1.  Nexthop grammar explained  . . . . . . . . . . . . . . . . 18
   7.  Using the RIB grammar  . . . . . . . . . . . . . . . . . . . . 19
     7.1.  Using route preference . . . . . . . . . . . . . . . . . . 19
     7.2.  Using different nexthops types . . . . . . . . . . . . . . 19
       7.2.1.  Tunnel nexthops  . . . . . . . . . . . . . . . . . . . 19
       7.2.2.  Replication lists  . . . . . . . . . . . . . . . . . . 19
       7.2.3.  Weighted lists . . . . . . . . . . . . . . . . . . . . 20
       7.2.4.  Protection . . . . . . . . . . . . . . . . . . . . . . 20
       7.2.5.  Nexthop chains . . . . . . . . . . . . . . . . . . . . 21
       7.2.6.  Lists of lists . . . . . . . . . . . . . . . . . . . . 22
     7.3.  Performing multicast . . . . . . . . . . . . . . . . . . . 23
   8.  RIB operations at scale  . . . . . . . . . . . . . . . . . . . 24
     8.1.  RIB reads  . . . . . . . . . . . . . . . . . . . . . . . . 24
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