Dear all, I started a thread on 6man about one issue in Neighbor Discovery which is extremely costly for embedded device: While performing address resolution for a neighbor, a node must be able to buffer at least one packet for the neighbor.
It means if your neighbor cache can support 4 neighbors, you must allocate 5K RAM for this buffering, 10K for 8 neighbors. This is very costly and will prevent most constrained platforms to be IPv6 compliant. I feel that without this, a node with 4K of RAM can be compliant. If the standard is not revised, you will probably need to upgrade to a chip with 16K RAM. This is true on any L2, not specific to 802.15.4, and also true with the neighbor discovery extensions 6lowpan is working on. I think this is critical we manage to have neighbor discovery revised on this point. What do you think? Regards, Julien _______________________________________________ 6lowpan mailing list [email protected] https://www.ietf.org/mailman/listinfo/6lowpan
