Behavior Engineering for Hindrance Avoidance (behave)

Last modified: 2013-10-17

Chairs

Transport Area Directors

Transport Area Advisor

Mailing Lists:

General Discussion: behave@ietf.org
To Subscribe: https://www.ietf.org/mailman/listinfo/behave
Archive: http://www.ietf.org/mail-archive/web/behave

Description of Working Group:

The working group creates documents to enable IPv4/IPv4 and IPv6/IPv4 NATs to function in as deterministic a fashion as possible.

To support deployments where communicating hosts require using different address families (IPv4 or IPv6), address family translation is needed to establish communication. BEHAVE will coordinate on this topic with the V6ops WG on requirements and operational considerations.

"An IPv4 network" or "an IPv6 network" in the descriptions below refer to a network with a clearly identifiable administrative domain (e.g., an enterprise campus network, a mobile operator's cellular network, a residential subscriber network, etc.). It will also be that network that deploys the necessary equipment for translation.

BEHAVE will finish four scenarios: (1) An IPv6 network to IPv4 Internet, (2) an IPv6 Internet to an IPv4 network, (3) an IPv6 network to an IPv4 network, and (4) an IPv4 network to an IPv6 network.

Specifically, BEHAVE will update the NAT MIB (RFC 4008) to be consistent with the management aspects of its IPv6/IPv4 NAT solutions, and specify IPFIX information elements to meet logging requirements, reusing existing elements, if possible.

In addition, when a NAT (such as a NAT64 in the "An IPv6 network to IPv4 Internet" scenario) serves multiple subscribers, inter-subscriber fairness issues arise. As such, BEHAVE will complete its work on Carrier Grade NAT requirements for such scenarios, and update the NAT MIB as needed to meet such requirements. BEHAVE will not, however, standardize IPv4-specific behavioral mechanisms.

The following scenarios remain in scope for discussion, but will not be solved by BEHAVE:

* An IPv4 network to IPv6 Internet, i.e. perform translation between IPv4 and IPv6 for packets in uni- or bi-directional flows that are initiated from an IPv4 host towards an IPv6 host. The translator function is intended to service a specific IPv4 network using either public or private IPv4 address space.

* IPv4 Internet to an IPv6 network, i.e. perform translation between IPv4 and IPv6 for packets in uni- or bi-directional flows that are initiated from an IPv4 host towards an IPv6 host. The translator function is intended to service a specific IPv6 network where selected IPv6 hosts and services are to be reachable.

This group will also provide reviews of any work by the MBoneD WG on multicast translation, including control traffic (IGMP and MLD), Single Source Multicast (SSM) and Any Source Multicast (ASM).

If the WG deems it necessary, BEHAVE will revise RFCs previously published by BEHAVE.

Goals and Milestones

Done
Submit BCP that defines unicast UDP behavioral requirements for NATs to IESG
Done
Submit a BCP that defines TCP behavioral requireents for NATs to IESG
Done
Submit a BCP that defines ICMP behavioral requirements for NATs to IESG
Done
Submit informational that discusses current NAT traversal techniques used by applications
Done
Submit BCP that defines multicast UDP
Done
Submit revision of RFC 3489 to IESG behavioral requirements for NATs to IESG
Done
Submit informational document for rfc3489bis test vectors
Done
Submit experimental document that describes how an application can determine the type of NAT it is behind
Done
Submit BCP document for DCCP NAT behavior
Done
Determine relative prioritization of the four translation cases. Documented in IETF74 minutes.
Done
Determine what solutions(s) and components are needed to solve each of the four cases. Create new milestones for the solution(s) and the components. Documented in IETF74 minutes.
Done
Submit to IESG: relaying of a TCP bytestream (std)
Done
Submit to IESG: relay protocol (std)
Done
Submit to IESG: TURN-URI document (std)
Done
Submit to IESG: IPv6 relay protocol (std)
Done
Submit to IESG: framework for IPv6/IPv4 translation (info)
Done
Submit to IESG: stateless IPv6/IPv4 translation (std)
Done
Submit to IESG: stateful IPv6/IPv4 translation (std)
Done
Submit to IESG: DNS rewriting for IPv6/IPv4 translation (std)
Done
Submit to IESG: IPv6 prefix for IPv6/IPv4 translator (std)
Done
Determine need and scope of multicast 6/4 translation
Done
Submit to IESG: FTP ALG for IPv6/IPv4 translation (std)
Done
Submit to IESG: Analysis of NAT-PT considerations with IPv6/IPv4 translation (info)
Done
Submit to IESG: host-based NAT46 translation for IPv4-only applications to access IPv6-only servers (std)
Jul 2012
Submit to IESG: large scale NAT requirements (BCP)
Jul 2012
Submit to IESG: avoiding NAT64 with dual-stack host for local networks (std)
Nov 2012
Submit to IESG: updates to NAT MIB for NAT64 (std)
Nov 2012
Submit to IESG: updates to NAT MIB for CGNs (std)
Nov 2012
Submit to IESG: IPFIX information elements (std)

Internet-Drafts

Request for Comments

 

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