2611 router hang when users using Bittorrent

[yapcw]

Anyone expirience this before?

I have 60 users accessing the internet using 2611 router. Everytime when user start to use Bittorrent, the CPU utilisation will shoot up to 95% and then the router will hang. No traffic will go through and the console is not responding as well.

I've tried to block Bittorrent default ports but it is not efficient.

Any suggestions on this issue?

[rrijk]

For suggestions we need more information on the config of your router.

More info for you can be found:

http://www.cisco.com/en/US/products/hw/routers/ps133/products_tech_note09186a00800a70f2.shtml

[dbellaze]

If you are still having this problem, can you post your configuration.

Daniel

[em6557]

I suggest to use a policy map to drop all P2P file sharing programs. ex

class-map match-any p2p

match protocol fasttrack

match protocol gnutella

match protocol napster

match protocol kazaa2

match protocol edonkey

match protocol winmx

match protocol bittorrent

policy-map block-p2p

class p2p

drop

service-policy input block-p2p (place on internet facing interface)

[bbanis2k]

I would also look at blocking that traffic.

[peterson.dave]

You could also load the NBAR PDLM for bittorent to help it match the traffic.

[lloyd]

Question on the correct syntax:

My routers (Version 12.3(8)T4) were configured with:

match protocol fasttrack file-transfer "*"

match protocol gnutella file-transfer "*"

match protocol kazaa2 file-transfer "*"

instead of:

match protocol fasttrack file-transfer *

match protocol gnutella file-transfer *

match protocol kazaa2 file-transfer *

OR your example of:

match protocol fasttrack

match protocol gnutella

match protocol napster

Is there a difference?

Thanks

Lloyd