Double leaky bucket meter

The double leaky bucket meter, shown in figure , is similar to the single leaky bucket meter. The only differences are that tokens must be simultaneously available in two distinct buckets, and that tokens are removed from both buckets if the packet is found to be conforming.

Figure: Double leaky bucket meter.

DLB has the following parameters:

Parameter	Unit	Description
cbs	Bytes	Committed burst size
cir	bps	Committed information rate
mpu	Bytes	Minimum policed unit
pbs	Bytes	Peak burst size
pir	bps	Peak information rate

Only mpu is optional, all other parameters are required.

The functions for testing a double leaky bucket meter are described in the previous section.