[STDS-802-16] Is the Ethernet CRC included in the MAC PDU?
Hi,
The 802.16-2004 standard does not appear to specify clearly which
Ethernet fields are to be included in the MAC layer PDU when the
convergence sublayer type is Ethernet or IP over Ethernet. For instance,
I assume that the Ethernet preamble and start frame delimiter should not
be included. Should the Ethernet CRC be included? The DOCSIS standard
does include a four-octet CRC on each packet and fragment, but as far as
I can see, DOCSIS does not have the possibility of an overall MAC CRC to
protect the payload. 802.16 has an optional CRC on the whole MAC PDU.
If 802.16 includes the Ethernet CRC, then should we recalculate the CRC
after payload header suppression? What response is required if the MAC
CRC on a MAC PDU is correct, but individual Ethernet CRCs within the PDU
fail?
Mark