Re: Tc does not seem to be limiting bandwidth

Linux Advanced Routing and Traffic Control

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your device, may not have a queue length,

try

ip link set $DEV txqueuelen 1000

and see whether it limits correctly.

On Fri, Feb 1, 2013 at 11:20 AM, Neil Aggarwal <neil@xxxxxxxxxxxxxxxxxx> wrote:
> Hello:
>
> I have these commands in my firewall startup script:
>
> DEV=v1252
> IP=a.b.c.d
> /sbin/tc qdisc del dev $DEV root
> /sbin/tc qdisc add dev $DEV root handle 1: htb default 30
> /sbin/tc class add dev $DEV parent 1: classid 1:1 htb rate 10mbit
> /sbin/tc class add dev $DEV parent 1: classid 1:2 htb rate 10mbit
> /sbin/tc filter add dev $DEV protocol ip parent 1:0 prio 1 u32 match ip dst
> $IP flowid 1:1
> /sbin/tc filter add dev $DEV protocol ip parent 1:0 prio 1 u32 match ip src
> $IP flowid 1:2
>
> And tc qdisc list shows it has something for that dev:
>
> qdisc htb 1: dev v1252 root refcnt 2 r2q 10 default 30 direct_packets_stat 3
>
> But, I am still seeing huge consumption of bandwidth from that server.
> Take a look at the attached graph.
>
> Any ideas why tc is not limiting the bandwidth?
>
> Thanks,
>   Neil
>
> --
> Neil Aggarwal, (972)834-1565, http://UnmeteredVPS.net/centos
> Virtual private server with CentOS 6 preinstalled
> Unmetered bandwidth = no overage charges
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