Re: htb guarantee bandwidth

Linux Advanced Routing and Traffic Control

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On Thursday 29 August 2002 10:53, Ciprian Niculescu wrote:
> hi,
>
> you give to all the clients all the bandwith or limited at 64k, but with
> different priorities.
>
> class parent 1: classid 1:5 htb rate 128kbit
> class parent 1:5 classid 1:1 htb rate 64kbit ceil 128kbit prio 1
> class parent 1:5 classid 1:2 htb rate 64kbit ceil 128kbit prio 2
>
> you put the client that you want to have guaranted 64kbps in 1:1, and
> the other two in 1:2.
The prio is only used to split the traffic that's available after the rates 
are satisfied.  In this case, the prio will change nothing.  But if you have 
3 classes like :

class parent 1: classid 1:5 htb rate 128kbit
class parent 1:5 classid 1:1 htb rate 32kbit ceil 128kbit prio 1
class parent 1:5 classid 1:2 htb rate 32kbit ceil 128kbit prio 1
class parent 1:5 classid 1:3 htb rate 64kbit ceil 128kbit prio 2

and class 1:1 uses no bandwidth.  Class 1:2 will get 32kbit, class 1:3 64kbit, 
so 32 kbit left.  Class 1:2 has the lowest prio, so it will get the remaining 
32kbit.  So each class gets 64 kbit.

The rate for a class is always guaranteed.  So you don't need an isolated 
option like in cbq.

Stef

-- 

stef.coene@docum.org
 "Using Linux as bandwidth manager"
     http://www.docum.org/
     #lartc @ irc.oftc.net

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