[LARTC] burst question

[richard lucassen]

This is one of my test classes:

class htb 1:10 parent 1:1 prio 0 quantum 2048 rate 160Kbit ceil 400Kbit
burst 1803b/8 mpu 0b cburst 2111b/8 mpu 0b level 0

Q1: where does "level 0" stand for?

Q2: where does this b/8 stand for?

Q3: this is on a i386 platform, so timer resolution should be 10mS.
According to the doc the minimal burst should be 10mS*160Kbit=1600. Why
is it 1803?

Q4: I want this class to be able to allow 400Kbit burst during 3
seconds. What value should I give to the burst parameter? Is this
400/160*1803=4507b?

TIA,

Richard.