My network has got slightly complicated.

I have a (D-Link ADSL Modem + Router), which connects to the ISP. From there a cable runs to 8 port switch. From the switch another cable runs to my rooms wifi router.

Now the problem is weird. Although I am able to connect to all computers in the network, both the routers and the internet, it lives short. The connection is very unstable. I am getting " Request Timed Out " when I try to ping even the root router. Sometimes local network works but internet doesn't work.

Modem is a D-Link DSL-2730U : ( DHCP enabled

Switch is a 8 Port D-Link unmanaged switch.

WiFi router is an old Teracom modem+router : ( DHCP server disabled. DHCP relay is set to DSL-2730U's address.

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    Please provide a short summary of the configuration you've got on both the router and the wifi AP. If the switch is managed - which I don't believe - you will also want to look into that. To me, this sounds a bit like you've got DHCP servers on both the router and the AP running. – Patrick R. Jan 11 '15 at 20:12
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    @Patrick R, +1 for the two DHCP servers on network. I'll bet that that's the root cause. – Kinnectus Jan 11 '15 at 20:15
  • @PatrickR. Updated post. ! – ultimate Jan 11 '15 at 20:28
  • Not sure you need the DHCP relay enabled. Your network is small enough and not segmented to require it... – Kinnectus Jan 11 '15 at 20:32
  • @BigChris Disabled that, still the same. – ultimate Jan 11 '15 at 20:45

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