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Thread ID: 139051	2015-03-02 03:14:00	Router/network adapter (or something else?) problem	Tony (4941)	Press F1

Post ID	Timestamp	Content	User
1395544	2015-03-12 22:52:00	Interesting thought. My network is actually very over engineered. The hub that distributes the ethernet is pretty much redundant as I use Wi-Fi these days. There are usually 4 devices active - the main PC, the server, the printer and the laptop, although the last three are idle most of the time. I'm not using any file-sharing services (AFAIK!!), and certainly my usage doesn't show anything abnormal. I have Win7 on the main PC and the laptop and WHS on the server.	Tony (4941)
1395545	2015-03-12 23:34:00	Don't have a cable looped out of the hub and back into it do you? That would cause a broadcast storm and will cause all sorts of funny issues.	Alex B (15479)
1395546	2015-03-13 00:54:00	No.	Tony (4941)
1395547	2015-03-13 08:07:00	Perhaps some devices are stealing each other's IP address? Running two DHCP servers in the same address range by accident?	Agent_24 (57)
1395548	2015-03-13 08:29:00	Perhaps some devices are stealing each other's IP address? Running two DHCP servers in the same address range by accident?AFAIK I'm only using one DHCP server - from the Zyxel router. Where else might it be coming from? I've also tried to give all the devices fixed IP addresses. Wouldn't I get clearer evidence of a conflict if that was happening? I don't know if I've said this before, but when I lose internet connectivity I can still get to other devices on the network. I've just come back to the PC after at least 3 hours away and it is all fine. Don't you just hate these intermittent problems?	Tony (4941)
1395549	2015-03-13 22:39:00	Ignore what I said about being able to access the general network. I lost access this a.m. and couldn't get to other devices on the network either.	Tony (4941)
1395550	2015-03-13 23:07:00	Easy to diagnose: Next time it occurs can the other devices still see each other. If so, its your WiFi adapter. If not, its your router .	Chilling_Silence (9)
1395551	2015-03-13 23:43:00	Easy to diagnose: Next time it occurs can the other devices still see each other. If so, its your WiFi adapter. If not, its your router . Do you mean "WiFi adapter" on the PC? We are not talking about a wireless connection there - it is all wired. The only potential wireless connection is between the laptop and the router. Good point though about seeing what is happening with the laptop when the PC is locked out. I'll disable the wireless on the laptop and see what happens, then I'll re-enable the wireless and unplug the ethernet.	Tony (4941)
1395552	2015-03-13 23:53:00	AFAIK I'm only using one DHCP server - from the Zyxel router. Where else might it be coming from? I've also tried to give all the devices fixed IP addresses. Wouldn't I get clearer evidence of a conflict if that was happening? The 'home security hub' (what is that anyway?) was my first thought, or maybe your server? Though it seems you unplugged those so maybe not... I wonder if maybe you have two problems with similar or identical symptoms. One with some other device on your network, the other something else. Maybe the DSL itself going bad, or some software issue. I wonder also if it's not actually electrical interference on your cable - you haven't run your Ethernet in parallel to any mains power cables etc?	Agent_24 (57)
1395553	2015-03-14 00:17:00	When we built the house we had an integrated security/smart lighting/ethernet system put in called "Smart House" - turned out be an iffy idea, but that's another story . There is a board in the compartment in the wall that acts as the hub for most of the ethernet and the phone and also potentially allowed the installation of a PABX . Because of speed problems with the ethernet I have bypassed that hub for the machines that are used all the time and they are connected direct from the Zyxel router or the Cisco switch . There is a cable from the router (or the switch) that goes into the wall and connects to the Smart House Hub (the red connector in my diagram) . That is currently disconnected . When it is connected the only device that might use it is the laptop on the other side of the office, but that is usually WiFi . I don't think it is the DSL going bad as I have recently changed from ADSL to VDSL and the situation was happening before and after the change . I also don't think it is the Zyxel router as the problem was also occurring with my previous ADSL router . AFAIK the the ethernet is installed correctly, though I can't verify that . Certainly the cables in the office from the router aren't parallel to power cables . To recap the testing process: I stripped everything back to the minimum - just the PC connected to the router, and everything seemed OK . Each subsequent day I added another device, still with no problems . Eventually I re-connected the "home security hub" and things went downhill quite fast - these lockups started happening quite frequently . Aha! I thought . I disconnected the red cable and everything went back to smooth running Aha! again . However now the lockups have started again, much less frequently . The red cable is still disconnected . Having the red cable connected to the Zyxel router or the Cisco switch seemed to make no difference . One interesting thing is that if I set up a continuous ping to an outside server (I've been using 8 . 8 . 8 . 8) the problem doesn't seem to occur . It is almost like something is going to sleep .	Tony (4941)
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