Router problems, Any gurus?

[P§I]

Linksys BEFSR41 v3

I have 2 pc's connected to my router. One is a old pIII machine that i use for Teamspeak and small stuff like that. The other is the machine i just got done building. e6600.
Anyways, when the old pc is connected though the router it kills my upload bandwidth. With the router connected i get around 20kbs / sec

With it to the modem i get 969kbs/sec
As far as i know the other machine is fine, I just got it up and running, so I haven't got a chance to check it yet.
But my old machine was on the router and was fine?

I've changed cables, powered them off, I am out of ideas?

The pIII enet drivers have been updated and has got winXP pro installed on it.

Any ideas?

[Serra]

One potential idea comes to mind, the duplex settings could be off between the two devices. Speed is auto-detected and must be the same on both ends for any type of functionality, but duplex is not necessarily auto-detected and if the NIC + Linksys are not both half duplex or full duplex, that could be it. Ideally it would be auto-detected, but some NIC cards aren't compliant with duplex setting negotiation. You'd basically just see a lot of errors on the port of the half-duplex unit (probably the Linksys - I believe all linksys' default to half-duplex if they don't communicate other devices for full duplex).

That'd be my bet. If there's an option to force full-duplex on the port the P3's connected to on your Linksys device, I'd give that a go and see if it helps.

[P§I]

One potential idea comes to mind, the duplex settings could be off between the two devices. Speed is auto-detected and must be the same on both ends for any type of functionality, but duplex is not necessarily auto-detected and if the NIC + Linksys are not both half duplex or full duplex, that could be it. Ideally it would be auto-detected, but some NIC cards aren't compliant with duplex setting negotiation. You'd basically just see a lot of errors on the port of the half-duplex unit (probably the Linksys - I believe all linksys' default to half-duplex if they don't communicate other devices for full duplex).

That'd be my bet. If there's an option to force full-duplex on the port the P3's connected to on your Linksys device, I'd give that a go and see if it helps.


Thanks I looked around in the routers setup page and found nothing about the duplex. Would it be in my router config or my nic config?

**edit never mind found some settings, wich one 10mb full or 100 mb full? I cant do it by port, but i can config all though.

[Serra]

The speed should auto-detect, so the speed you choose shouldn't matter, it's just the duplex (half or full) that does. I'm not too sure about Linksys device settings, but you can try forcing full and see if that does anything. Your NIC may also have some duplex option somewhere, though I wouldn't be sure where to find that. If you can find a setting though, try manually setting the duplex on both the Linksys and your NIC to the same (half or full).

A quick alternative test might be to pick up a new $15 NIC somewhere and plug that into your motherboard. If it fixes the problem (because any new NIC should support auto negotiation), then keep it and if it doesn't... well, you can still return it and go from there.

[P§I]

K, thanks for the info.

Its just weird, before i reformatted the old machine it was fine. After reformat it started this. Tried up to date drivers and all.

Also what is weird if i plug it straight to the modem it works fine?

[strange|ife]

on most NIC's you can adjust the duplex in the device properties tab under network connections.

leave it to auto negotiation normally.

on most intergrated nics in the past 4 years this is an option

for a system that old i honestly couldnt say. Linksys routers use full duplex to my knowledge.

if you cant get that p3 machines nic to run good. i would say get yourself a PCI nic card, netgear makes some of the best imo.

are you running any bittorrent clients btw?

[P§I]

on most NIC's you can adjust the duplex in the device properties tab under network connections.

leave it to auto negotiation normally.

on most intergrated nics in the past 4 years this is an option

for a system that old i honestly couldnt say. Linksys routers use full duplex to my knowledge.

if you cant get that p3 machines nic to run good. i would say get yourself a PCI nic card, netgear makes some of the best imo.

are you running any bittorrent clients btw?

Well yes i have installed Azureus, but haven't used it yet.

I still cant understand why it was running good before the format. I had the original HDD die on me so i had to format my storage drive and start over.
But its possible that the NIC card took a dump also.:shrug: