IP Routing for Wireless/Mobile Hosts (mobileip) Monday, 12/7/98, 1300 - 1500 Co-chairs: Erik Nordmark Jim Solomon Minutes by: Jim Solomon Summary: - Mobile IPv6 is in IESG Last Call; several implementations exist and some interest was expressed in having a bakeoff - There are numerous, disparate, proposals for enhancing Mobile IPv4 to add new AAA functionality, to regionalize registration messages for local handoffs, support private address-spaces, etc. The chairs request that the authors of these disparate groups work together to draft requirements and set out to solve them within the context of the working group. I. Jim Solomon , Announcements - IESG has been asked to advance Mobile IPv6 to PS RFC. Expect Last Call in a week or so. - A handful of Mobile IPv6 implementations have been written. Some interest in a bakeoff expressed -- to be taken to the mailing list. - No substantial Mobile IPv4 deployment to discuss. II. Dave Johnson , Mobility Support in IPv6 Dave described the updates since the last draft: - clarification of destination options and sub-options - other clarifications re: prefix options - Abstract now states that this document confers a requirement on *all* IPv6 nodes - changes are non-controversial -- no objections from the room - Erik to coordinate MIPv6 interoperability testing III. Andras Gergely Valko , Cellular IP - Mobility standards: GPRS, CDPD, UMTS IMT-2000, W-LAN, Mobile IP - Proposed Network has mobility mgmt, paging, handoff, but no HLR, MSC signalling system, etc ==> Smooth handoffs, simplicity, and scalability are drivers - Each base station reverse learns MN's location, up to the first-hop router (typically an FA) - implementations in progress for FreeBSD/WaveLAN - Security (hijacking, denial-of-service) was mentioned as an issue. - Routing loops are also possible for arbitrary topologies of Base Stations IV. Martin K÷rling , IMT-2000 Requirements on Mobile IP - Requirements, not protocols, for 3G networks - Problems with 2002 which prevent widescale, commercial, deployment: security model, static public IP address (private address support), handoff performance, scalability - Issues: authentication, key dist., route optim, hierarchical structure, dynamic host conf, separation of control and traffic - Martin's main observation: there have been a lot of proposals on these issues but very little discussion on the mailing list on the requirements for these topics. V. Charlie Perkins , AAA Extensions for Mobile IP - AAABOF seems to indicate that a working group will be formed, with DIAMETER-like functionality to be defined - Idea is to authenticate MN's NAI (username) instead of its IP address, ala most remote access in the internet - Enhancements since last draft: private address support, regionalized regitration, self-configuring agent hierarchy VI. Mooi Choo , Mobile IP Enhancements - proposes AAA extensions, localized mobility, and other enhancements to Mobile IP - Two implementations: Bell Labs, Malaysia Multimedia University VII. Foo Siang Fook , Regional Aware Foreign Agents (RAFA) Mobile IP extension for Private Internets Support (MPN) Reverse Twice Network Address Translators (RAT) - more AAA enhancements (key management), fast handoffs for regionalized mobility, notification of old FA after handoff - implementation underway X. George Fankhauser , RSVP and Mobile IPv6 Problem: - RSVP_HOP object contains home address - SESSION object has wrong flow id Solution: - Change routers on path to match on home address? changing core is not a viable option - Proposal to change end-systems instead to modify the RSVP messages and extend flows after handoffs