384 kbps line always at 336kbps... normal?

[pardus]

My 384 kbps Telkom/MWeb line (in Randburg, JHB) always downloads at max 336 kbps. During the day it's is sometimes a bit less but at 6am on a Sunday the max is 336kbps, it's pretty consistent too then, downloading at between 330 and 336 kbps.

Is this normal for a 384 kbps line and if not what can I do to change it? MTU or other settings?

 

[ponder]

That is about spot on. You have to keep in mind that you cannot get the full 384kbs dedicated to your downloads as there are protocol overheads for TCP/IP & ATM. ATM is between your Router & DSLAM while TCP/IP is for all internet traffic. The overhead for both combined is about 12-14%.

Edit: Just googled and here is a pretty nice explanation you can read up on if you want more detailed info http://pflog.net/dsl_overhead/

 

[pardus]

Thank you, that makes sense.