[Gllug] Bandwidth quotas

[Tushar Joshi]

Hey maybe a talk to gllug on this topic would be nice :)


Tushar

On Thu, Mar 07, 2002 at 06:52:35PM +0000, Simon Stewart wrote:
> On Thu, Mar 07, 2002 at 05:33:46PM +0000, Dylan Brewis wrote:
> > Hi guys,
> > 
> > Is it possible to limit the maximum percentage of bandwidth available to a 
> > client or group of clients? I'm thinking 30-50% shared by 3 machines in day 
> > to day use for surfing, leaving 50-70% to one machine for 'serious' use.
> 
> Did this just the other day. Take a look for the "linux advanced
> routing and traffic control howto" at http://www.ds9a.nl/lartc (from
> my print out)
> 
> If you have the luxury, multi-home the routing PCs internal interface,
> and split the machines into two categories (the "browser" and the
> "workers", if you'd like) You'll need to set the default route on each
> group to point to a different address on the multihomed host.
> 
> eg.
> 
> On the router
> 
> # ip address add 192.168.1.2 dev eth0  # This is for browsing
> # ip address add 192.168.1.3 dev eth0  # This is for working
> 
> # tc qdisc add dev eth0 root handle 1: cbq bandwidth 2MBit cell 8 \ 
>   avpkt 1000 mpu 64
> 
> Set the "bandwidth" attribute to match the amount of OUTGOING
> bandwidth you have. The rates assuming a total outgoing bandwidth of
> 2048 kbps
> 
> # tc class add dev eth0 parent 1:0 classid 1:1 cbq bandwidth 2MBit \
>   rate 700kbit avpkt 1000 prio 5 bounded isolated allot 1514 weight 1 maxburst 20
> # tc class add dev eth0 parent 1:0 classid 1:2 cbq bandwidth 2MBit \
>   rate 1348kbit avpkt 1000 prio 1 bounded isolated allot 1514 weight 1 maxburst 20
> 
> # tc filter add dev eth0 parent 1:0 protocol ip prio 5 handle 1: u32 divisor 1
> # tc filter add dev eth0 parent 1:0 prio 5 u32 match ip src 192.168.1.2 flowid 1:1
> # tc filter add dev eth0 parent 1:0 prio 5 u32 match ip src 192.168.1.3 flowid 1:2
> 
> It's a really flexible system (though a bit a head ache to get to
> know) One neat trick is to use iptables to MARK high priority traffic,
> and then stick that into a higher priority queue. 
> 
> You'll need to have compiled in support for QoS before any of this
> works, btw.
> 
> Cheers,
> 
> Simon
> 
> -- 
> "People said to me, 'just be youself,' and now they hate me."
>     --- Robert Newman, the Mary Whitehouse Experience
> 
> -- 
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