1. Transmission of IPv6 Packets over IEEE 802.15.4 Wednesday, November 10, 2004 61 st IETF, Washington D.C. Monroe East, 1530-1730 Gabriel Montenegro - Sun

2. Why this document? Basic requirement to run IPv6 “IPv6 over Foo” “Sub-IP” section in node-requirements document Other Examples of “IPv6 over Foo” documents Ethernet – RFC 2464 PPP – RFC 2472 ATM - RFC 2492 IEEE 1394 – RFC 3146 MAR 2005: Send to IESG as Proposed Standard

3. Topics (1 of 2) IEEE 802.15.4 mode for IP Contention-based channel access (csma/ca) not Guaranteed Time Service (GTS) Frame format How to carry IPv6 packets within 15.4 packets Address generation EUI-64 addresses for IEEE 802.15.4 Interface ID obtained via Addressing Architecture (RFC 3513) But also: mapping to 16-bit addresses possible Autoconfiguration and link-local addresses Adaptation Small Data Payload for IEEE 802.15.4 max is 102 (aMaxMACFrameSize) Need a shim or adaptation layer as min IPv6 MTU is 1280 Other functions in this shim (Mesh, Header compression, etc)?

4. Topics (2 of 2) Mesh Layer 2 (Sub-IP) mesh using, say, AODV “lite” (intra-PAN) Layer 3 (Supra-IP) mesh also possible (e.g., 15.4 + UWB) (inter- PAN) Header compression Not a luxury Integration of L2/L3 headers into one single compressed header Context build-up via configuration phase (not just typical negotiation) Header compression in a mesh scenario