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WRT54g and Speedtouch 530 sudden internet death!

Discussion in 'Networking Issues' started by nar1, Mar 9, 2005.

  1. nar1

    nar1 Network Guru Member

    For any of you experts, need urgent help!
    Have a linksys WRT54G connected to an alcatel Speedtouch 530 adsl modem, working fine for the past few months on wired and wireless connections. Then gradually noticed random disconnects where I had to reboot the system to reestablish a connection. Then all of a sudden, can't access internet connection of the modem for both LAN and wireless! Did a hard reset but no go! I can communicate with the router and under the status config it says its CONNECTED to the modem but no internet access on the computer! Modem works if connected directly to computer. I'm using latest official linksys firmware 3.03.6. What's going on!?! Any ideas welcome!
     
  2. howardp6

    howardp6 Network Guru Member

    Was the Alcatel 530 or the WRT54G handling the PPOE or PPOA DSL connection? That is the router logging on to DSL or was the modem handling the log on. The WRT54G may have failed if it was handling the logon. Is the DSL/WAN LED lit and what color is it and is it flashing. If it is unlit, change the telephone line and check for dial tone. If it is green and on you hae a DSL connection. If it is amber and not flashing you have DSL synchronized, if flash you are non synchronized. If ait is amber/green and toggling you are synchronied but not connected. Type in 10.0.0.138, in your web browser and if you get a Thomson/Alcatel scren your oruter has failed and is directly connecting you to the modem. From a DOS prompt type it ipconfig and check the status of your Network adapter. Check the IP address of the adapter and gateway. Normally the IP address of a WRT54G is in the 192.168.X.X range. If is is type in the ip address of your gateway/router in your browser. You should bd prompted for a password. The default password ofr a Linksys router is "admin" Check thst status of your router. Normally a WRT54G uses NAT to make its LAN ports not visible from the internet. I have read of a WRT54G failing and directly connecting the WLAN port to the LAN ports, but it is not common. You can check if yor WRT54G is loggon on using PPOE, is DHCP client or using a static IP address.
     
  3. nar1

    nar1 Network Guru Member

    Firstly, thank you for your very comprehensive reply! Ive programmed the router to handle the PPOE login, i believe the modem is at default settings as a bridge. LEDs for WLAN, internet, and the port used by computer are all green and flicker on occasion. I cant access Alcatel config web page with the router attached (but is possible with a direct modem to computer connection). Ipcnfig of network adapter shows IP address (192.168.1.100) and default gateway (192.168.1.1), the expected default settings with DHCP server enabled on router. I can access the routers web page and the status says its connected, and its able to obtain IP address from the modem, MTU 1492. But despite everything, still no internet connection. Appreciate the help!
     
  4. howardp6

    howardp6 Network Guru Member

    If you can access the WRT54G, and have set it to use PPOE, can you check the Status screen and if it is not connected attempt to reconnect. If it is connect, it will have an IP address and have the addresses for yourIP DNS servers. If you cannot connect, verify that all of DSL filters are working properly by disconnecting all your telephones. You can connect to your modem directky through either the ethernet or USB2 connection and verify that is truely in briddge mode. Try setting up the modem to logon and verify the it is working properly. There is a stats screen and you should be able to verify the it is connecting and the connection statistics.If it does not connect, I would contact your ISP for help at this point.
     
  5. nar1

    nar1 Network Guru Member

    The status screen of the router says its connected with an issued IP address and DNS servers. But when I attempt to go online on my computer it always times out. I've also tried connecting the computer directly to the modem and it works fine(e.g. i can use internet services) using XP's built in PPOE software so that means the modem can connect with the ISP at least. I'm thinking somethings happening with the router not forwarding internet access to the computer even if it's able to link up with the modem as it indicates on the router's status screen (complete with IP, DNS, and internet gateway). However, the strange thing here is that the computer should be communicating with the router as it can access its setup page. Was that confusing enough? :)
     
  6. howardp6

    howardp6 Network Guru Member

    It appears that you have connectivity to your router, and your modem is indeed in bridge mode. On the status pscreen did it list DNS server addresses? What is happening when you try to get on the internet? Are you getting site not found or is it timing out? You should have your router set as a Gateway on the Advanced Routing screen of your router and not as a router. If it is set as a Gateway go to the Amistration Screen and select diagnostics and ping 66.94.234.13, which is the ip address of www.yahoo.com. Next ping www.yahoo.com. If the pings are successfu for both you are getting DNS name resolution. If only the ip address is success you are not resolving the domain names to ip addresses. If both are successfull the router has access to the internet from a DOS prompt do the test again by typing in ping 66.94.234.13 and ping www.yahoo.com.
     
  7. nar1

    nar1 Network Guru Member

    howardp6, thank you again for taking me through this step-by-step. It's been a learning experience in troubleshooting for a networking newbie like me! Here's what I've gotten so far. the status screen does list DNS server addresses and the router is setup as Gateway in advanced routing options. My internet connection on the computer times out. I've tried pinging 66.94.234.13 from the router diagnostics screen as you instructed, 100% packet loss! So i guess you found the problem there. DNS address problem? Next thing is how do you think I can resolve this?
     
  8. howardp6

    howardp6 Network Guru Member

    It is not a DNS problem if you cannot ping the ip address. It is a DNS problem if you cannot ping the domain address, but can ping the ip address. Do a traceroute from the diagnotics screen for both the ip address and domain name. That should show where the problem is. If is does not get beyond the router, then the router is at fault and may have to be replaced. Check the MTU size and set it to auto.
     
  9. nar1

    nar1 Network Guru Member

    MTU is set to auto (1492 based on the status screen). I get a timeout when doing the traceroute so I guess as you say that means I've got a defective router. I'm surprised because I've only had this router for a little over a month, thought linksys was a reliable product. At least I think I can have it replaced. Thanks very much, this might not be the best news but at least now i've got answers!
     
  10. howardp6

    howardp6 Network Guru Member

    I have three Linksys routers WRT54Gv1, WRT54Gv2 and a WRT54GX, one access point WAP54G, three WMP54Gv2, two WPC54GX a WPS54G and a WPS54GU2 and only destroyed the WRT54Gv2. They are usually very reliable. You can RMA the WRT54G with Linksys or if your seller has a liberal exchange have them exchange it. I am assuming you are using stock Linksys firmware.
     
  11. nar1

    nar1 Network Guru Member

    Interesting, my router is a WRT54gv2 as well. Fortunately, its got the stock firmware so I should have no problem with the replacement.
     
  12. nar1

    nar1 Network Guru Member

    Just an update, I was able to have my WRT54gV2 replaced with a brand new V2.2. However, when I set it up I was still having the exact same problems described in this post. Through a little tinkering, I was able to set it up by using a different approach and for anyone having similar problems, this might work for you as well. I programmed the speedtouch 530 to act as the PPOE server, attached it to the router (now programmed as automatic DHCP), then i attached my computer to the router via wan and lan. Takes a little calibration of the IP address to get it working but now at least i have internet access on all computers. To howardp6, with this setup I was wondering how I should configure the advanced routing options in the WRT54G. Its currently programmed as GATEWAY and works fine but would it be better if it were programmed as ROUTER? If so, what settings? I'm asking this because if i've got it right the Speetouch now functions as a router/modem and i have a 2nd router(WRT54G) behind that. Your opinions?
     

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