IETF 79 Proceedings

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Global Routing Operations (grow) (WG)

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Additional information is available at tools.ietf.org/wg/grow

Chair(s): Christopher Morrow Peter Schoenmaker Operations and Management Area Director(s): Dan Romascanu Ronald Bonica Operations and Management Area Advisor: Ronald Bonica Technical Advisor(s): Bill Fenner Vijay Gill

Meeting Slides

• Agenda
• draft-ietf-grow-geomrt-00
• draft-chen-ebgp-error-handling-00
• ietf79-grow-draft-jasinska-ix-bgp-route-server-01
• gshut update

Internet-Drafts:

• MRT routing information export format (67662 bytes)
• BGP Monitoring Protocol (32605 bytes)
• FIB Suppression with Virtual Aggregation (58720 bytes)
• Auto-Configuration in Virtual Aggregation (10189 bytes)
• Simple Virtual Aggregation (S-VA) (20664 bytes)
• Distribution of diverse BGP paths. (48101 bytes)
• MRT BGP routing information export format with geo-location extensions (11614 bytes)
• Unique Per-Node Origin ASNs for Globally Anycasted Services (24538 bytes)
• Time to Remove Filters for Previously Unallocated IPv4 /8s (9615 bytes)
• Operational Requirements for Enhanced Error Handling Behaviour in BGP-4 (42567 bytes)

Request for Comments:

• Embedding Globally Routable Internet Addresses Considered Harmful (RFC 4085) (22656 bytes)
• BGP Wedgies (RFC 4264) (24139 bytes)
• BGP Communities for Data Collection (RFC 4384) (26078 bytes)
• BGP MULTI_EXIT_DISC (MED) Considerations (RFC 4451) (28435 bytes)
• Classless Inter-Domain Routing (CIDR): The Internet Address Assignment and Aggregation Plan (RFC 4632) (66944 bytes)
• Operation of Anycast Services (RFC 4786) (56818 bytes)
• Requirements for the Graceful Shutdown of BGP Sessions (RFC 6198) (37906 bytes)

Charter (as of 2008-12-16)

The Border Gateway Protocol (BGP) is fundamental to the operation
of the Internet. In recent years, occurrences of BGP related
operational issues have increased, and while overall
understanding of the default-free routing system has improved,
there is still a long and growing list of concerns. Among these
are routing table growth rates, interaction of interior and
exterior routing protocols, dynamic properties of the routing
system, and the effects of routing policy on both the size and
dynamic nature of the routing table. In addition, new and
innovative uses of BGP, such as the use of BGP as a signaling
protocol for some types of Virtual Private Networks, have created
new and unexpected operational issues.

The purpose of the GROW is to consider the operational problems
associated with the IPv4 and IPv6 global routing systems,
including but not limited to routing table growth, the effects of
the interactions between interior and exterior routing protocols,
and the effect of address allocation policies and practices on
the global routing system. Finally, where appropriate, the GROW
documents the operational aspects of measurement, policy,
security, and VPN infrastructures.

GROW will also advise various working groups, including the IDR
and RPSEC working groups, with respect to whether it is
addressing the relevant operational needs, and where appropriate,
suggest course corrections. Finally, operational requirements
developed in GROW can also be used by any new working group
charged with standardizing a next generation inter-domain routing
protocol.

GOALS:
-----

(i). Evaluate and develop various methodologies of controlling
policy information in order to reduce the effect of
prefix sub-aggregates beyond the necessary diameter, so
as to reduce the Network Layer Reachability Information
(or NLRI; see e.g.,draft-ietf-idr-bgp4-23.txt) load on
network infrastructure.

(ii). Document and suggest operational solutions to problematic
aspects of the currently deployed routing
system. Examples include instability caused by
oscillation of MULTI_EXIT_DISC (or MED; see RFC 3345)
values.

(iii). Analyze aspects of supporting new applications, including
extending existing routing protocols and creating new
ones. This includes risk, interference and application
fit.

(iv). Determine the effect of IGP extensions on the stability of
the Internet routing system.

(v). Document the operational aspects of securing the Internet
routing system, and provide recommendations to
other
WGs.


Some Relevant References:
-------------------------
http://www.routeviews.org
http://bgp.potaroo.net
http://www.cidr-report.org
http://www.pch.net/routing/BGP_table_size.ital
http://moat.nlanr.net/AS
http://www.apnic.net/stats/bgp
http://www.merit.edu/ipma
http://www.caida.org/projects/routing/atoms

Goals and Milestones:

Done		Publish Risk, Interference and Fit (RIFT) document as WG I-D
Done		Publish Embedding Globally ...Considered Harmful as WG I-D
Done		Publish MED Considerations Draft as WG I-D
Done		Publish Collection Communities as WG I-D
Done		Submit Collection Communities to IESG for BCP
Done		Submit Embedding Globally ...Considered Harmful to IESG for Info
Done		Submit MED Considerations to IESG for Info