Azureus killing a small router?


I am having a problem of my tiny Fonera router restart on me endlessly whenever I have two laptops with Azureus running connect to the network, so I started to investigate. I could not get any meaningful error messages from the router before it reboots and the only weird thing I could find in the statistics was the huge number of active connections. When I have one laptop with Skype running, Firefox browsing a few pages and Internet radio playing the number of active connections was around 200. Starting Liferea for RSS bumps that to 300. Nothing serious. However, as soon as I start Azureus (with no active downloads!) the number of active connections jumps by 400-500, starting one download adds another 300 connections. That is despite setting a maximum global limit of active connections to 100 in Azureus preferences. After 5-10 minutes the number of connections goes down to 500 (with one download active), but with two laptops with Azureus in the same wireless network the initial spike is high enough to kill the router in 2-3 minutes, force it to reboot and then do it all over again, and again, and again ...

No I am thinking whether to spend around 50€ for another router or try to work with Azureus folks to try to fix this. :(

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Roger 12 years, 9 months ago

It's quite common, I've seen similar behavior with friend's ADSL modem (we had to switch it to bridge and make NAT on the computer).
DHT + connections are quite efficient stress-test for these cheap boxes. Try lowering connection timeout in router to relieve conntrack.

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Matthew W. S. Bell 12 years, 9 months ago

With the netfilter/iptables default settings I find that it is quite easy to entirely fill the connection tracking table. There are quite a lot pages on this on the web.

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Alan 12 years, 9 months ago

I had similar problems with the joke hardware my phone company tried to pass off as a router. It used a different chipset but exibited the same problems. I believe that the problem is caused by multiple connections at once. Azureus and Steams' [] launcher program also rebooted it. But what made it worse was the TV was going through this router too. So every time the router rebooted the TV went off!

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lloeki 12 years, 9 months ago

i'm hitting a similar issue, but it does not kill my router (WRT54Gv5+ddwrt), it just saturates the router in some way. if azureus runs for more that two minutes, another computer cannot get a dhcp lease, or even associate to the wifi AP. as soon as I kill azureus, the other one connects successfully to the network. what's weird is that azureus is transmitting at ridiculous rates (1~2kib/s) when this occurs. this does not occur with, say, deluge. my solution, ditch the damn azureus.

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Elkin 12 years, 9 months ago

I just bought a new ADSL modem after leaving Azureus runing all night long and finding my trusty Devolo Modem fried in the morning. I even had it limited to about 150 connections... but still killed it.

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Carl 12 years, 8 months ago

Does anybody have any solution?
I have max 75 connections in Azureus and DHT switched off....

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