Re: how does <<isolated>> work??

Linux Advanced Routing and Traffic Control

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Hi,

The filters work as expected. tc -s qdisc shows traffic for all 3
qdiscs.
The first filter rule only applies to all packets coming from
192.168.0.0/24. All other packets are divided to 1:2 and 1:3.

At Sat, 2 Nov 2002 08:00:56 +0530,
S Mohan wrote:
> 
> In the filter sequence, would not all packets match the first filter and
> hence go thro' that only? Should the filter chain be modified to have
> the $LOCALIP source last so that packets not coming from sport 80 and
> 443 will only reach that filter as intended. What does rest mean in 4:0
> when it would anyway match 2:0? The match or filter conditions do not
> look different at all.
> 
> If my understanding is wrong, I'd like to know the correct one.
> 
> Mohan
> 
> -----Original Message-----
> From: lartc-admin@mailman.ds9a.nl [mailto:lartc-admin@mailman.ds9a.nl]
> On Behalf Of Clemens Resanka
> Sent: Saturday, November 02, 2002 1:45 AM
> To: lartc@mailman.ds9a.nl
> Subject:  how does <<isolated>> work??
> 
> 
> Hi all,
> 
> I am trying to use cbq to limit the traffic of an interface.
> 
> I want all traffic from local addresses to pass through unlimted, all
> web-traffic limited to 500kbit and the rest limited to 250kbit. The
> 500kbit and the 250kbit traffic should be allowed to borrow from each
> other, but not from the unlimited local addresses.
> 
> Here's the setup:
> 
> #                      1:0        cbq
> #                     / | \
> #                    /  |  \
> #                   /   |   \
> #                 1:1  1:2  1:3
> #                  |    |    |
> #                  |    |    |
> #                 2:0  3:0  4:0   sfq
> #
> #               local  Web  rest
> #               unl. LIMIT1 LIMIT2
> 
> I made 1:1 isolated but 1:2 and 1:3 still borrow from it. bounded
> however works as expected.
> 
> Did I miss something or is the isolated option broken?
> 
> btw: I tried it with a 2.4.10 and a 2.4.19 kernel.
> 
> here are the commands I tried:
> ----------------------------------------------------------------------
> 
> # IP to route through 1:1
> LOCALIP=192.168.0.0/24
> 
> # Limit of 1:2
> LIMIT1=500kbit
> 
> # Limit of 1:3
> LIMIT2=250kbit
> 
> # Interface to limit
> IFACE=eth1
> 
> # 1:0 cbq qdisc
> tc qdisc add dev $IFACE root handle 1:0 cbq bandwidth 100Mbit \ avpkt
> 1000 
> 
> # 1:1 cbq class; unlimited 
> tc class add dev $IFACE parent 1:0 classid 1:1 cbq \
> bandwidth 100Mbit rate 100Mbit maxburst 20 avpkt 1000 isolated 
> 
> # 1:2 cbq class; limited to $LIMIT1
> tc class add dev $IFACE parent 1:0 classid 1:2 cbq \
> bandwidth 100Mbit rate $LIMIT1 maxburst 20 avpkt 1000 
> 
> # 1:3 cbq class; limited to $LIMIT2
> tc class add dev $IFACE parent 1:0 classid 1:3 cbq \
> bandwidth 100Mbit rate $LIMIT2 maxburst 20 avpkt 1000 
> 
> # 2:0, 3:0 sfq
> tc qdisc add dev $IFACE parent 1:1 handle 2:0 sfq 
> tc qdisc add dev $IFACE parent 1:2 handle 3:0 sfq 
> tc qdisc add dev $IFACE parent 1:3 handle 4:0 sfq 
> 
> # everything from $LOCALIP goes to 1:1
> tc filter add dev $IFACE protocol ip parent 1:0 prio 1 u32 \ match ip
> src $LOCALIP flowid 1:1 
> # port 80 to 1:2
> tc filter add dev $IFACE protocol ip parent 1:0 prio 1 u32 \ match ip
> sport 80 0xffff flowid 1:2 
> # port 443 to 1:2
> tc filter add dev $IFACE protocol ip parent 1:0 prio 1 u32 \ match ip
> sport 443 0xffff flowid 1:2 
> # everything else to 1:3
> tc filter add dev $IFACE protocol ip parent 1:0 prio 1 u32 \ match ip
> src 0.0.0.0/0 flowid 1:3 
> 
> ----------------------------------------------------------------------
> 
> 
> 
> So far..
> 
>  - Clemens -
> _______________________________________________
> LARTC mailing list / LARTC@mailman.ds9a.nl
> http://mailman.ds9a.nl/mailman/listinfo/lartc HOWTO: http://lartc.org/

So far..

 - Clemens -
_______________________________________________
LARTC mailing list / LARTC@mailman.ds9a.nl
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