IPv6 over IEEE 802.15.4 BOF (6lowplan) Wednesday, November 10 at 1530-1730 =================================== CHAIRS: Geoff Mulligan Nandakishore Kushalnagar Gabriel Montenegro AGENDA: Agenda Bashing 5m Introduction and Problem Statement 10m - Background on IEEE 802.15.4 and (versus) ZigBee - Why there is work to be done, and why at the IETF Proposal Presentation 10m - IPv6 only versus IPv4 also. - Coordination with others (IEEE, ZigBee, others?) Charter Discussion 20m Discussion 15m DESCRIPTION: 0. The V6over15.4 BOF will discuss the issues and goals of defining how to best host an IPv6 stack on top of a low data rate low power sensor network built using IEEE 802.15.4 radios. The goal of the BOF is to ascertain the interest level to pursue this work within the IETF. A follow-up question is whether to pursue within one or within several WGs. 1. Description - Sensor Networks are networks of severely constrained devices. These networks are fast becoming a reality. Many complex "closed standards" exist and more are being developed, but none are being developed with an eye on Internet standards. When building and deploying low cost low power and extremely inexpensive network nodes such as those in sensor and telemetry networks currently best exemplified by the IEEE 802.15.4 radio node, it is import to recognize the major differences in these networks from IP networks of the past: * Potentially 2 orders of magnitude more nodes * Severly limited code and ram space (e.g., highly desirable to fit a stack in, say, 16K, using 8 bit processors) * Unobtrusive but very different user interface for configuration (e.g., using gestures or interactions involving the physical world) * Robustness and simplicity in routing or network fabric * Extremely aggressive power constraints (i.e., many of these devices should run for months or years on batteries) Currently no open standards exist to define: * IP adaption/Packet Formats and interoperability * Dynamically adaptive topologies * Addressing schemes/management * Network management * Routing * Security set-up/maintenance 2. Proposed Charter - To define a minimal IPv6-based stack on IEEE 802.15.4 radios providing for a simple but sufficient mesh network, simple but extensible security model (read key management), and the basic packet/header formats, stack environment and L2/L3 interface/control mechanisms. The working group will reuse (perhaps adapting) existing specifications whenever reasonable and possible. 3. Milestones - JAN 2005: Closure on Problem statement (either a working group draft to advance to IESG or a completed section for inclusion within another WG draft) FEB 2005: Closure on evaluation of alternative proposals MAR 2005: First version of WG solution draft JUL 2005: Working group last call for "Solution" draft Oct 2005: Submit "Solution" draft to the IESG for proposed standard RFC Additional milestones may become evident as the working group progresses through the evaluation phase of the different alternatives. These milestones may be added accordingly with AD approval. 4. Mailing list - To send messages to the list send to: v6over15.4@hz.com To subscribe or unsubscribe send to: v6over15.4-request@hz.com Subject: [un]subscribe The archive for the list is at: http://www.hz.com/v6over15.4 5. Reading list. "draft on IPv6 over 15.4" (forthcoming) IEEE 802.15.4 information (including the spec) available from: http://www.ieee802.org/15/pub/TG4.html 6. Related links: Networking for small embedded devices: * nanoIP (and nanoTCP, nanoSLP, etc): o paper: http://www.cwc.oulu.fi/~zdshelby/home/work/nanoip.pdf o presentation: http://www.cwc.oulu.fi/~zdshelby/home/work/icc2003.ppt * RMST o Reliable Multi-Segment Transport for directed diffusion o http://www.isi.edu/~fstann/papers/RMST_snpa.pdf * uIP TCP/IP stack (http://www.sics.se/~adam/uip/) o tiny TCP paper: http://www.sics.se/~adam/ewsn2004.pdf) o DTN/SN project at SICS in Sweden: http://www.sics.se/cna/dtnsn/ * Internet 0 o http://cba.mit.edu/projects/I0/ o Scientific American: http://cba.mit.edu/projects/I0/04.06.I0.pdf * IPv6 Sensor Networking Consortium o mailto:v6sens-sec@hq.iri.co.jp