Re: [LARTC] burstable with tc

[Stef Coene <stef.coene@docum.org>]

Hi,

I suppose you are using CBQ ?  You can create more classes to achieve it. 
> Something like, giving a user a bandwidth restriction of
> 64Kbps to 256Kbps on a 2Mbps network
Gives :
cbq qdisc
  \ bounded class rate = 2Mbps
      \ bounded class rate = 256 Kbps
      |   \ class rate = 64Kbps

      \ other class rate = 512 Kbps
      \ other class rate = 512 Kbps
      \ other class rate = 512 Kbps
      \ ...
But I think it will not the give the results where you are looking for.
Or use htb :)
Htb has a ceil parameter to ceil a class so it does exactly what you want.  
With rate you can specify the minimum rate and with ceil the maximum rate.

Stef

On Tuesday 02 July 2002 11:09, Rohan Almeida wrote:
> Hi,
> Is it possible to avail of burstable option while
> controlling bandwidth using tc?
> Let me explain.. :-)
> I could successfully allocate an ip(or class) a certain bandwdith
> limit, and without giving a bounded parameter, it borrowed
> bandwidth when available.
> But i also want an upper limit.
> Cause, the lower limit works fine.
> ie. when there are other ips online, this particular ip
> does not go above the lower limit.
> Once the other ips go offlline, this particular ip
> starts borrowing all the "available" bandwdith.
> "available" is the key word here,
> After it starts borrowing bandwdith I also want it
> to have an upper limit.
> Something like, giving a user a bandwidth restriction of
> 64Kbps to 256Kbps on a 2Mbps network.
>
> Thanx

-- 

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