Mobility for IP: Performance, Signaling and Handoff Optimization (mipshop) -------------------------------------------------------------------------- Charter Last Modified: 2008-08-21 Current Status: Active Working Group Chair(s): Stefano Faccin Vijay Devarapalli Internet Area Director(s): Jari Arkko Mark Townsley Internet Area Advisor: Jari Arkko Mailing Lists: General Discussion:mipshop@ietf.org To Subscribe: mipshop-request@ietf.org In Body: subscribe Archive: http://www.ietf.org/mail-archive/web/mipshop/index.html Description of Working Group: Mobile IPv6 enables IPv6 mobile nodes to continue using a given "home address" in spite of changes in its point of attachment to the network. These changes may cause packet loss, and also represent overhead traffic on the network. The previous MIPSHOP charter directed the group to continue work (started by the Mobile IP Working group) on two technologies to address these issues. Hierarchical Mobile IPv6 (HMIPv6, RFC 4140) reduces the amount and latency of signaling between a MN, its Home Agent and one or more correspondent nodes. Fast Handovers for Mobile IPv6 (FMIPv6, RFC 4068) reduces packet loss by providing fast IP connectivity as soon as the mobile node establishes a new point of attachment at a new link. As part of its previous set of work items, MIPSHOP published these two protocols as experimental RFCs. An information document on how FMIPv6 can operate over IEEE 802.11 was also published as an informational RFC. Further implementation work by the community has increased the understanding of how FMIPv6 behaves or should behave on other link layers, and in general. Similarly, further implementation and experimentation with HMIPv6 has resulted in better understanding of the protocol. Accordingly, MIPSHOP will continue work on HMIPv6 and FMIPv6 in order to prepare their publication as proposed standards. Additionally, the IEEE 802.21 Media Independent Handoff (MIH) working group aims at providing services to assist with handoffs between heterogeneous link-layer technologies, and across IP subnet boundaries. The information exchanges defined by IEEE 802.21 are classified as MI (Media Independent) Event Service (MIES), MI Command Service (MICS), and MI Information Service (MIIS). The MIIS provides topological and location-related information of service networks. The MIES provides timely communications of wireless environment information via the delivery of events originating across the link-layer or farther away. The MICS is an analogous service for commands which can change the state of the wireless link or of a host's point of attachment, potentially triggering further event generation. MIH services can be delivered through link-layer specific solutions and/or through a "layer 3 or above" protocol. MIPSHOP will define the delivery of information for MIH services for this latter case. Notice that this allows the network information to reside anywhere (not necessarily across the link-layer hop), and enables MIH services even in the absence of the corresponding link-layer support. An L2 or L3 based mechanism to identify a valid information server is also required; in particular for L3, we expect that any of the several current L3 discovery mechanisms will be used. A liaison with IEEE 802.21 has been established, and access to the IEEE 802.21 drafts is granted to mipshop members. Interested members need to send a request to the WG chairs in order to obtain a copy of the current IEEE 802.21 draft. There have been several proposals to improve upon the Return Routability procedure defined in MIPv6 (RFC 3775), both in terms of the security of the mechanism as well as with respect to its performance. In particular, discussions within the MOBOPTS Research Group of the IRTF have centered on reducing the round trip times required to complete the procedure, and on increasing the length of time before the procedure needs to be run again. Some proposals are mature enough that they will be taken over by MIPSHOP for standardization. The WG will be very proactive in seeking AD-coordinated security reviews of the drafts developed in the WG. Scope of MIPSHOP: The working group will: 1. Revise the specification of HMIPv6 (RFC 4140) protocol to advance it to Proposed Standard. This implies: * Work on MN-MAP security * Streamline and refine the current HMIPv6 specification. * Document: draft-ietf-mipshop-hmipv6-rev-XX.txt 2. Revise the specification of FMIPv6 protocol (RFC 4068) to advance it to Proposed Standard. * Work on MN-AR (access router) security using both the AAA infrastructure, and keys derived from SeND o Documents: draft-ietf-mipshop-handover-keys-aaa-XX.txt, draft-ietf-mipshop-handover-key-send-XX.txt * Streamline and refine the current FMIPv6 specification (draft-ietf-mipshop-fmipv6-rev-XX.txt) 3. Work on the application of FMIPv6 on two examples link-layers for advancement as Informational RFCs: * IEEE 802.16e (and WiMax), and * 3G CDMA 2K networks * Documents: draft-ietf-mipshop-fh80216e-XX.txt, draft-ietf-mipshop-3gfh-XX.txt 4. Produce a document on improving MIPv6 Return Routability via both Cryptographically Generated Addresses and Credit-based Authorization for advancement as Proposed Standard * Documents: draft-ietf-mipshop-cga-cba-XX.txt 5. Work on areas of mutual interest to IEEE 802.21 and MIPSHOP: * Produce the required protocol enhancements or specifications for IP-based support of Media-Independent Information, Command and Event Services. * Documents: draft-ietf-mipshop-mih-info-elements-XX.txt (information elements), draft-ietf-mipshop-mih-support-XX.txt (transport of 802.21 services over IP, including security aspects) Tackling further work, although possible, requires re-chartering. Goals and Milestones: Done Working Group Last Call on draft-ietf-mipshop-hmip-xx.txt Done Working Group Last Call on draft-ietf-mipshop-lmm-requirements-XX.txt Done Working Group Last Call on draft-ietf-mipshop-fmipv6-xx.txt Done Discuss Last Call comments and security analyses at IETF 58 Done Submit draft draft-ietf-mipshop-lmm-requirements-XX.txt to IESG for consideration of publication as Informational Done Submit draft-ietf-mipshop-fmipv6-xx.txt to IESG for consideration of publication as Experimental Done Submit draft-ietf-mipshop-hmip-xx.txt to IESG for consideration of publication as Experimental Done Working Group Last Call on draft-ietf-mipshop-80211fh-xx.txt for Informational Done Submit draft-ietf-mipshop-80211fh-xx.txt to IESG for consideration of publication as Informational Done Working Group Last Call on draft-ietf-mipshop-cga-cba-XX.txt Done Working Group Last Call on draft-ietf-mipshop-mis-ps Done Submit draft-ietf-mipshop-cga-cba to IESG for publication as Proposed Standard Done Working Group Last Call on draft-ietf-mipshop-fmipv6-rfc4068bis Done Working Group Last Call on draft-ietf-mipshop-handover-key-send Done Submit draft-ietf-mipshop-mis-ps to IESG for publication as Informational RFC Done Working Group Last Call on draft-ietf-mipshop-rfc4041bis Done Working Group Last Call on draft-ietf-mipshop-3gfh Done Working Group Last Call on draft-ietf-mipshop-fh80216e Done Submit draft-ietf-mipshop-fmipv6-rfc4068bis to IESG for publication as Proposed Standard Done Submit draft-ietf-mipshop-handover-key-send to IESG for publication as Proposed Standard Done Submit draft-ietf-mipshop-3gfh to IESG for publication as Informational RFC Dec 2007 Submit draft-ietf-mipshop-4140bis to IESG for publication as Proposed Standard Done Submit draft-ietf-mipshop-fh80216e to IESG for publication as Informational RFC Jan 2008 Working Group Last Call on draft-ietf-mipshop-mih-support Feb 2008 Submit draft-ietf-mipshop-mih-support to IESG for publication as Proposed Standard Internet-Drafts: Posted Revised I-D Title ------ ------- -------------------------------------------- Dec 2007 Sep 2008 Mobility Services Framework Design (MSFD) Apr 2008 Oct 2008 Dynamic Host Configuration Protocol (DHCPv4 and DHCPv6) Options for Mobility Server (MoS) discovery Apr 2008 Oct 2008 Locating Mobility Servers using DNS Request For Comments: RFC Stat Published Title ------- -- ----------- ------------------------------------ RFC4068 E Jul 2005 Fast Handovers for Mobile IPv6 RFC4140 E Aug 2005 Hierarchical Mobile IPv6 mobility management (HMIPv6) RFC4260 I Jan 2006 Mobile IPv6 Fast Handovers for 802.11 Networks RFC4866 PS May 2007 Enhanced Route Optimization for Mobile IPv6 RFC5164 I Mar 2008 Mobility Services Transport: Problem Statement RFC5270 I Jun 2008 Mobile IPv6 Fast Handovers over IEEE 802.16e Networks RFC5271 I Jun 2008 Mobile IPv6 Fast Handovers for 3G CDMA Networks RFC5269 PS Jun 2008 Distributing a Symmetric Fast Mobile IPv6 (FMIPv6) Handover Key Using SEcure Neighbor Discovery (SEND) RFC5268 PS Jun 2008 Mobile IPv6 Fast Handovers RFC5380 PS Oct 2008 Hierarchical Mobile IPv6 Mobility Management