surreal network troubleshooting
A few months ago we added a G3 350 iMac to our home network. Ever since then, we started seeing network blips, where our WRT54G would occasionally reset itself. It didn’t happen often enough to see a correlation. Over time it got worse, but not debilitatingly so, but we’d managed to suspect the Mac was at fault. Since the WRT54G had a real bad habit of “losing” its static WAN IP setting whenever it blipped, we went out and replaced it with a new WRT54GS. Things seemed to get somewhat better though not completely; there was still periodic problems when the Mac was being used.
Well, the user of the iMac went away for a week, came back, rebooted — which kicked in an update to MacOS 10.4.10 — and the network started having fits, the WRT54GS resetting itself every three minutes to the point that nothing of any practical value could be done on the network as connections kept getting hosed. The short-term solution was to pull the Mac from the network (though the problem was pronounced most when the Mac was surfing).
Over the next day or two I wracked my brain trying to think up options. I didn’t want to get a new router. I considered hubbing the network between the modem and the router, hooking the Mac straight into the hub (we have a spare IP from our ISP). But I couldn’t find my hub. I did find our old BEFSR41. And I thought, just for fun, why not see if the BEFSR41 hooked into the network will at least isolate the Mac’s damage to a second subnet.
So I wired the BEFSR41 straight into a free port on the WRT54GS, set it up as 192.168.2.* (instead of 1.*), and plugged the Mac into that.
It all works great now. I don’t know why. And I don’t dare update the FW on the second router.
The model names are all Linksys home routers. WRT54G is a 4-port wired/wireless device, as is WRT54GS; the latter claims to have some sort of enhanced speed. BEFSR41 is a wired-only 4-port device.














