Re: Traffic shaping for Bit Torrent Traffic

I am sure you have thought of this but figured I would mention it... Have you thought about upgrading the IOS? Cisco says that 12.2 supports NBAR. Just a thought.

Sent from my iPad

On Jun 23, 2010, at 8:40 PM, Carlos G Mendioroz <tron_at_huapi.ba.ar> wrote:

> Hmmm,
> I guess that what you really are trying to do is compensate some under
> provisioning with a unilateral policy based on "p2p is bad".
>
> If this is so, good luck, but p2p clients will try to defeat you,
> and IMHO, they will.
>
> But if this is not a "p2p is bad thing", what you can do is create a
> policy of "maximum data transfer in x time" or else we'll shape you.
> That you can do with flow based tools and some automatic shaping
> logic.
> After all, it does not matter if they are e-muling videos,
> bit-torrenting music or ftp-ing IOS images, they are using too much !!
> Given sensible limits, you still may use full throuput for a song or two.
>
> Just a point of view :)
>
> -Carlos
>
>
> Joshua @ 23/06/2010 12:35 -0300 dixit:
>> 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
>>
>
> --
> Carlos G Mendioroz <tron_at_huapi.ba.ar> LW7 EQI Argentina
>
>
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Received on Wed Jun 23 2010 - 21:40:10 ART