Inter-Domain Routing (idr)

WG Name Inter-Domain Routing
Acronym idr
Area Routing Area (rtg)
State Active
Charter charter-ietf-idr-05 Approved
Status update Show Changed 2018-11-07
Document dependencies
Additional resources IDR GitHub Organization
IDR Wiki, Zulip stream
Personnel Chairs Jeffrey Haas, Keyur Patel, Susan Hares
Area Director John Scudder
Secretary Jie Dong
Delegate Jie Dong
Mailing list Address [email protected]
To subscribe https://www.ietf.org/mailman/listinfo/idr
Archive https://mailarchive.ietf.org/arch/browse/idr/
Chat Room address https://zulip.ietf.org/#narrow/stream/idr

Charter for Working Group

The Inter-Domain Routing Working Group is chartered to standardize,
develop, and support the Border Gateway Protocol Version 4 (BGP-4)
[RFC 4271] capable of supporting policy based routing for TCP/IP
internets.

The main objective of the working group is to support the use of
BGP-4 by IP version 4 and IP version 6 networks. The working group
will also continue to work on improving the robustness and
scalability of BGP.

IDR will review extensions made to BGP in other working groups at least
at WG document adoption and during working group last calls. The IDR
working group will also provide advice and guidance on BGP to other
working groups as requested.

Work Items:

The IDR working group will work on correctness, robustness and
scalability of the BGP protocol, as well as clarity and accuracy of the
BGP document set. The group will also work on extensions beyond these
areas when specifically added to the charter. The current additional
work items are:

  • Relax the definition of BGP identifiers to only require AS-wide
    uniqueness. This change must be made in a backward compatible way.

  • Specify a means to non-disruptively introduce new BGP Capabilities
    to an existing BGP session.

  • Upgrade of the base BGP specification to Full Standard

  • Define AS_PATH based Outbound Route Filtering.

  • MIB v2 for BGP-4

  • Augment the BGP multiprotocol extensions to support the use of
    multiple concurrent sessions between a given pair of BGP speakers.
    Each session is used to transport routes related by some session-
    based attribute such as AFI/SAFI. This will provide an alternative
    to the MP-BGP approach of multiplexing all routes onto a single
    connection.

  • Support for four-octet AS Numbers in BGP.

  • Revisions to the BGP 'Minimum Route Advertisement Interval'
    deprecating the previously recommended values and allowing for
    withdrawals to be exempted from the MRAI.

  • Advertisement of multiple paths for the same address prefix without
    the new paths implicitly replacing any previous ones. Each path is
    identified by a path identifier in addition to the address prefix.

  • Revised error handling rules for optional transitive BGP attributes
    so that a BGP speaker is no longer required to reset the session
    over which a malformed attribute is received. Provide guidelines
    for authors of documents that define new optional transitive
    attributes, and re-assess procedures for existing optional
    transitive attributes

  • Specify Link Bandwidth Extended Community for use in unequal cost
    load balancing.

  • The definition of an "Accumulated IGP Metric" attribute for BGP
    to report the sum of the metric of each link along the path.
    This attribute is for use in a restricted environment where:

  • all ASes are subject to the administrative control
  • some form of tunneling is used to deliver a packet to its next
    BGP hop

  • where the path for a route leads outside the AS to which the
    BGP speaker adding the attribute belongs.

  • Advertisement of the best external route in BGP to assist with
    resolution of the next hop in the chosen data plane.

Milestones

Date Milestone Associated documents
Apr 2016 Solicit work items for scalability improvements
Apr 2016 Progress base BGP specification (RFC 4271) as Full Standard
Feb 2016 Submit ASpath ORF draft to IESG as a Proposed Standard
Feb 2016 Submit Yang BGP Modules to IESG as Proposed Standard
Jan 2016 Revise WG charter
Dec 2015 Submit Dynamic Capability for BGP-4 to IESG as a Proposed Standard
Nov 2015 Submit MIB v2 for BGP-4 to IESG as a Proposed Standard
Nov 2015 Submit Multisession BGP to IESG as a Proposed Standard
Jun 2015 Submit Advertisement of Multiple Paths in BGP to IESG as a Proposed Standard
Jun 2015 Submit BGP Link Bandwidth Extended Community to IESG as a Proposed Standard
Mar 2015 Submit ASpath ORF to IESG as a Proposed Standard

Done milestones

Date Milestone Associated documents
Done Submit Error Handling for Optional Transitive BGP Attributes to IESG as a Proposed Standard
Done Submit The Accumulated IGP Metric Attribute for BGP to IESG as a Proposed Standard
Done Submit Revisions to the BGP 'Minimum Route Advertisement Interval' to IESG as a Proposed Standard
Done Submit BGP Support for Four-octet AS Number Space (revised version) to IESG as a Proposed Standard
Done Submit AS-wide Unique BGP Identifier for BGP-4 to IESG as a Proposed Standard
Done Prefix and ASpath ORF draft to IESG as a Proposed Standard
Done Submit Outbound Route Filter, Prefix and ASpath ORF draft to IESG as a Proposed Standard
Done Submit 4-byte AS ID to IESG as a Proposed Standard
Done Submit Subcodes for BGP Cease Notification Message to IESG as a Proposed Standard
Done Submit BGP Graceful Restart to IESG as a Proposed Standard
Done Submit Extended Communities draft to IESG as a Proposed Standard
Done Submit revised text on Multi-Protocol BGP (rfc2858bis) to IESG as a Draft Standard
Done Submit BGP4 document to IESG as a Draft Standard
Done Submit BGP Security Vulnerabilities Analysis to IESG as an Informational
Done Submit BGP4 MIB to IESG as a Proposed Standard
Done Submit to BGP Capability Advertisement to the IESG