Messages in this thread | | | Date | Sat, 27 Oct 2001 10:40:59 +0200 (CEST) | From | Martin Josefsson <> | Subject | Re: Other computers HIGHLY degrading network performance (DoS?) |
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On Sat, 27 Oct 2001, Anuradha Ratnaweera wrote:
> > > Just found out that this is _not_ a problem of the "download accelerator", but > > > something to do with queuing algorithm of the router. Even a normal wget > > > process or a big mail has a big impart on the network. Hopefully an iptables > > > firewall would solve the problem. > > > > I'd advice you to seriously look over your network, are you 100% sure you > > don't have a duplex-issue anywhere? > > I will double check. I wonder if this is the cause, because the network is 100 > Mbps, but the router is switching only at 64kbps.
Our network almost died when someone changed the duplex in the switch here...
> > I've been running linuxrouters for quite a while and right now I have a few > > linuxrouters routing 100Mbit/s internetconnections. We have never had any > > problems like the one you describe so my first guess would be that you have a > > duplexproblem, probably between the linuxrouter and the switch it's connected > > to on the inside, that's usually where it's located. > > We have a hub, and not a switch. Can this be the reason? BTW, how come that a > duplex issue can result in such huge degradations?
If you are trying to run full-duplex against the hub it till completely kill the performance of the entire hub, been there, done that. When I did that one I could only push 5-50kB/s through the hub.
> > I seriously doubt that this a problem with the networking in linux. > > Not in linux, may be the way they have _used_ linux on the router ;-)
Hehe, I think you'll have to have quite weird QoS rules to manage to do something like this :)
/Martin
Never argue with an idiot. They drag you down to their level, then beat you with experience.
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