I couldn't find an easy way to search the archive for prior discussions on this topic but the datagram tag size of 7 bits seems too low to me.
The max data rate for 802.15.4 is 250kbps. Of this, lets assume that one only achieves about 128kbps or 16KBps. At this rate, an application could potentially be pumping out 128-byte packets (this is long enough to cause each packet to be fragmented) at the rate of 128 packets per second and cause the tag field to rollover every second. So to avoid any potential of confusion due to tag reuse, one would have to assume that packets do not stay in the multihop network for more than a second or so. This expectation seems unreasonable (especially for a reactive routing protocol where route discovery alone might take this long). thoughts/comments? vipul _______________________________________________ 6lowpan mailing list [email protected] https://www1.ietf.org/mailman/listinfo/6lowpan
