Bow-Nan, with EMANE v0.8.1, the common MAC header is 6 bytes. The RF-Pipe does not have its own MAC header.

So if you are sending a 100 byte UDP packet using MGEN, you will see a total of 176 bytes from MAC to PHY via your statistic.
The breakdown of the 176 bytes is as follows:

Payload:   100
Ethernet: 14
IP:           20
UDP:       8
MGEN:    28
RF-Pipe MAC:  6

Total:  176

kb

On 08/28/2013 02:40 PM, Cheng, Bow-Nan - 0665 - MITLL wrote:

Hello,

We've added a statistic to track bytes sent downstream from MAC to PHY using the pkt.length() function. One thing we're noticing is that for RF Pipe, an extra 48 bytes is being added is being added for the "MAC" header. I was wondering what this would correspond to and/or where I can find out what contributes to the RF Pipe MAC header? Ethernet is about 14 Bytes and I believe 802.11 is somewhere around 28.. But I'm not sure where 48 bytes is coming from. Any thoughts would be greatly appreciated. Thanks!

-Bow-Nan


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