Re: [802.3_NGECDC] Single twisted pair, 1km CFI slide review
I will add one more item to consider, and that is security.
Security for 802.3 frames is provided by 802.1AE which specifies the AES
GCM mode of operation. GCM was specifically developed back for 802.3ah
(EPON) and is designed for fast, parallelizable operation. This is
achieved at a cost to memory over CCM which was developed for 802.11i
and is used in 802.15.4 as well.
An oft discussion is GCM or CCM, and in constrained environments, CCM
typically wins. As such this work should include a matching effort in
802.1 to add CCM to 802.1AE.
This is a first-level evaluation of the cost of security for LRE devices
and more discussion and research will be needed.