Re: Traffic shaping for Bit Torrent Traffic

Anyone actually seen NBAR work for torrents? I've tried this on our corp LAN
to no avail. the Packets get through. You really need a 250k box to do this.
On top of that, hopefully you aren't in the US, as it's technically still
illegal to drop torrent traffic of paying customers.

On Wed, Jun 23, 2010 at 7:35 AM, Joshua <joshualixin_at_gmail.com> wrote:

> As an local ISP, we have some customers that are heavy Bit Torrent
> users. We want to proactively put in place a bandwidth shaping
> solution so that our other users are not impacted. Unfortunately, we
> do not have Cisco NBAR capable routers. We have tried to shape
> standard ports that BT uses with the following commands in our Edge
> router (7606) on gi6/6 which is the port to our upstream provider:
>
> conf t
>
> ip access-list extended BT_Shape_Test
> permit tcp any any range 6881 6999
> !
> class-map BT_Shape
> match access-group name BT_Shape_Test
> !
> policy-map BT_Shape_Test
> class BT_Shape
> police cir 32000 bc 32000 be 32000 conform-action transmit
> exceed-action drop violate-action drop
> !
> int gi6/6
> service-policy input BT_Shape_Test
> service-policy output BT_Shape_Test
>
> I can confirm that this shaping does in fact work, however, this made
> no impact on our bandwidth usage as BT clients use such random ports.
> If you have any thoughts or ideas, I would be glad to hear them.
>
> Thanks,
> Joshua
>
> --
> Sent from my mobile device
>
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Received on Wed Jun 23 2010 - 18:17:59 ART