Member Avatar for Darren070902

Right! Here I go. I have a DLINK DI-624+ Wireless Broadband Router. A DLINK DWL G520+ Wireless Card. A Globespan Virata ADSL Ethernet/USB Modem/Router. I can get it all to work happily. But almost daily, mainly when I switch off the PC the internet connection does not come back up when reconnecting. I therefore have to unplug the modem from the Wireless router and then attach directly to the PC using the onboard ethernet card. Wait for the LAN connection then disconnect and re-attach it back to the wireless router, the whole thing then works. Whether I ma connected to the internet or not the Globespan modem has a status of NO DEVICE. This is very annoying, where does the problem lie, the DLINK equipment or the Modem. Any ideas guys...:sad:

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A short, practical diagnosis and checklist that ties together points from , and and fills the gaps left in the thread.

The symptoms reported — the ADSL unit only reliably showing as present on one interface at a time, intermittent Internet after power cycles, and resolving only when the PC was plugged directly to the modem — are most commonly caused by an interface/mode mismatch or DHCP/NAT conflicts when two routing devices are chained. Either the modem is operating in a mode that expects USB, or both the modem and the DI-624 are acting as DHCP/NAT routers and stepping on each other.

Suggested troubleshooting (do these in order, documenting results):

  • Isolate: connect a single PC to the modem Ethernet, power-cycle the modem, and log into the modem’s web UI to check whether it’s in “bridge” or “router” mode and whether the Ethernet interface is enabled. Note DSL sync and PPP status.
  • Decide roles: either make the modem a simple bridge and let the DI-624 handle PPPoE/DHCP/NAT, or make the modem the router and convert the DI-624 into an access point (disable DHCP on the DI-624 and connect modem LAN -> DI-624 LAN). Never run two DHCP servers on the same subnet.
  • Check addressing: ensure the two devices do not share the same LAN IP (e.g., both using 192.168.0.1). Change one device to a different subnet (192.168.2.x) if necessary.
  • Basic network checks from the PC:
    ipconfig /all
ipconfig /release
ipconfig /renew
ping <modem-IP>
tracert 8.8.8.8
  • Cabling and ports: modem Ethernet -> router WAN port (unless the router is being used as an AP, in which case use LAN->LAN). On older hardware, a crossover cable may be required between two router-like devices if auto MDI-X is not supported.
  • Final steps: update firmware on both units, disable unused USB modem drivers if Ethernet is preferred, and always power-cycle in order: modem, then router, then clients.

Cautions: switching a modem to bridge will move PPP credentials to the router — preserve ISP username/password before changing modes. Persistent “NO DEVICE” or flaky Ethernet after these steps suggests either a firmware bug or intermittent hardware failure in the modem’s Ethernet port; in that case a firmware update or RMA is the likely remedy.

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Member Avatar for TheComputerGeek

I would guess that your router is configured incorrectly, I can't say for sure though, or what could be wrong. Anyone else out there have a good suggestion for him?

Member Avatar for Darren070902

I got that response from the supplier of the modem. I am waiting to hear from them as to what the solution might be. What should my settings be for each piece of equipment. Any help would be appreciated.

Member Avatar for TheComputerGeek

Well I would suggest you read over your manual. I have never personally configured the router you mentioned so I couldn't tell you what settings may need adjusting. Have you tried DLink's support website (http://support.dlink.com/)? Thier knowledge base might have the answer to your problems.

Member Avatar for Darren070902

I had to return my PC this week, because the fan wasn't working. They gave a full replacement. I have configured the network and it seems to be working (touch wood), I think my problem lay inthe modem. It looks like the pc recognised the modem only when it was connected using the usb cable, not when it was using the ethernet cat5 cable.

Member Avatar for dvr

not sure I understand is your modem usb or cat 5?
if it is both you might have to disable the usb and only use cat5.
here is a link for you

read through pages 13-18.
you are using 2 routers why?
install a hub and you should be all set.
check this page not sure which router you have.

you can do this but the way you have it setup the routers are getting confused.

Member Avatar for Darren070902

The modem is USB and Cat5. I have two routers because I bought the modem after buying the wireless broadband hub and it was the only asdl modem left in the shop and I was desperate to get it all setup so I bought it.

I have the DI-624+ which I think is the UK version.

Touch Wood! It all appears to be working since I replaced the PC and managed to configure the modem using cat5 without the need for the USB. Which is something I couldn't achieve before. I did this by using one of the LAN ports as well as the WAN port. Not sure if that was the reason though. Many, many thanks for all your help!!!!

not sure I understand is your modem usb or cat 5?
if it is both you might have to disable the usb and only use cat5.
here is a link for you

read through pages 13-18.
you are using 2 routers why?
install a hub and you should be all set.
check this page not sure which router you have.

you can do this but the way you have it setup the routers are getting confused.

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