It will take 1.2 ms to transmit a 1500Bytes PDU on Ethernet. [1500 * 8 bytes * 1000 ms / 10M]
CIR=Committed Information Rate
Bc=Committed Burst Size
Be=Excessive Burst Size
Tc=Time Interval
Bc/Tc=CIR/SEC
if
CIR=8bps
Tc=125ms
then
Bc=1bit
|125ms_|_|_|_|_|_|_|
<- 1000ms ->
Reduce Bc for smaller Tc to improve VoIP traffic performance (which will wait shorter per time interval)
Be/Tc=(AR-CIR)/SEC
Be allow customer to bank "credit" from early time intervals and send it later on within a second, the overall traffic will not exceed the CIR.
