cisco 2651XM router with WIC1-ADSL card IOS: c2600-ipbasek9-mz.124-17.bin
I have a problem with this router in that the adsl connection seems to be getting clogged up or mangled and I lose internet connectivity. It happens about once every day and if I shut down the atm0/0 intterface and then start it again this restores the internet connection. The internet connection isn't completely down but if I ping www.google.co.uk from the router I get varying success rates from 0% to 80%. Normally the ping is 100% successful. This router has always been rock solid for years however this problem has co-incided with running a linux vpn machine with rtorrent through the router and I thus have a continuous stream of encrypted torrent traffic both ways. Why should this effect the router in this way? and is there a solution to stabilising the connection? should I be using a different IOS?
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From what you're describing, it may be the torrent flow is filling your pipe which causes issues for other traffic.
If your ADSL has asymetrical bandwidth, and available bandwidth is less than physical interface bandwidth, you might be able to improve the situation by shaping for egress bandwidth and using per flow FQ. (NB: an interface shaper, alone, might use FQ.)
I should further mention I do have traffic throttling configured on the torrent program, which controls the speed both in and out at different times of the day (otherwise the traffic would simnply choke up all my bandwidth). So I'm not sure it's a 'choke' problem. Also, once the connection goes down my vpn tunnel goes down, the torrent traffic stops and nothing will flow properly on the broadband, even non-vpn traffic. I was thinking maybe the type of traffic could be causing a hiccup in the adsl card but I'm not sure, because the main traffic is vpn traffic - which made me think I should use an IOS more suited to it (?). But I don't know if there is an IOS that's friendlier to vpn traffic.
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