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Re: something like Guide Post ?



On Sun, 23 Aug 1998, Shachar Tal wrote:

> Hi,
> 
> On Sun, 23 Aug 1998, Ben - Nes Michael wrote:
> 
> > Netguard (Which made the FireWall "Guardian" for NT) have a great
> > product (For NT) that can lets you assign bandwidth priority, guarantee
> > and limit bandwidth allocation.
> > 
> > The administrator can control which services will have priority on
> > others - like if the web or the ftp is need more bandwidth the prog can
> > decrease the bandwidth of the mail for example.
> > 
> > And to the big Question - Does linux have something similar ?
> 
> No, Linux doesn't have something similar. In fact, Linux cannot support
> it, yet. I asked the kernel list about this and after a long discussion it
> seemed that it is implementable only over IPv6 with minor adjustments to
> the kernel, or a rather complete rewrite of the TCP/IP stack over IPv4, if
> you would be using the Type Of Service field in the IP header, but not in
> the near future.

There is something close, though.
The last version of Squid, has a patch that lets you decide how much
bandwidth you want to give to each file type.
Every type has two parameters, the first one is the number of bytes to
send with no delays, and the second one is the number of bytes to send
each second after sending all the undelayed data.
This is god only for web and ftp. A good thing is that it can practically
disable every use of real audio and such things.

Liran.
---
http://www.math.tau.ac.il/~liranz/