On Jul 19, 2006, at 8:10 PM, Behcet Sarikaya wrote:
I agree with Phil, I think we should have his consideration considered seriously. Regarding his question, in the format draft, 802.15.4 MAC layer is assumed and the frame sizes are from IEEE standard. This WG assumes that even the light sensors support 802.15.4 MAC (kind of like Telos motes). In that sense this WG is addressing futuristic sensor nodes on which IP stack can be implemented. How close that future be, we do not know.
You can totally write an IP stack -- even a TCP stack -- on sensor nodes today, admittedly the ones that have the biggest microcontrollers you can buy (atmega128L, MSP430F1611, etc.). The TCP stack might not have a lot of RAM for windowing and high performance, but that's rarely the goal. You can do it.
I don't think the requirements the document implies are unrealistic or onerous. As I said, you have to cut the line somewhere. My comment was just that they *do* preclude smaller nodes whose storage cannot hold a complete IPv6 packet, and it might be useful to note as such, since the document is defining the problem statement, and therefore the problem scope.
Phil _______________________________________________ 6lowpan mailing list [email protected] https://www1.ietf.org/mailman/listinfo/6lowpan
