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Linksys WRT54G & ADSL2+

Discussion in 'Cisco/Linksys Wireless Routers' started by Semazzo, Nov 14, 2006.

  1. Semazzo

    Semazzo LI Guru Member

    Hi,
    i have a router Linksys WRT54G and an ADSL2+ (20MB) modem.
    When i use a direct connection "modem-->PC", i can download very fast (like 1,7 MB/s), but when i use a connection: "modem-->router-->PC" the internet velocity make slow (the donwload velocity of the same file is about 200 Kb/s).
    Maybe is a firmware problem?
    I use the version: Alchemy-6.0-RC6a v3.01.3.8sv of default on my WRT54G.
    Please help me!!
     
  2. arigosh

    arigosh Network Guru Member

    How do you connect? Do you use PPPoE or DHCP? Do you have QoS turned on? Can you take a look at the CPU load on the router while transferring a file at the maximum speed and see if the CPU is maxed out and what process uses the most CPU?
     
  3. Semazzo

    Semazzo LI Guru Member

    The router control the modem with a PPPoE connection, and the QoS is disabled.
    How can i see the router's CPU load?
    The load of the PC's CPU is normal while i transferring an internet or a lan file at the max speed.
     
  4. snooze7555

    snooze7555 Network Guru Member

  5. Semazzo

    Semazzo LI Guru Member

    Maybe i'll try the dd-wrt ... but before i want try to resolve my problem without change my firmware
     
  6. snooze7555

    snooze7555 Network Guru Member

  7. Semazzo

    Semazzo LI Guru Member

    Yes...my value is 1492
     
  8. Semazzo

    Semazzo LI Guru Member

    I have upgraded my firmware with dd-wrt.v23_voip_wrt54g, but the problem still remain
     
  9. HiSpeed

    HiSpeed Network Guru Member

    Hi,

    If your modem can do it, try PPPoA into it, put a Static IP into your WRT, set the MTU to 1500 everywhere...
     
  10. arigosh

    arigosh Network Guru Member

    To see the CPU load on the router, use SSH or telnet to login into the router, and run the command "top".
    It has been reported before that PPPoE connections sometimes overwhelm the CPU of the router, but this seems to depend on the exact firmware you are using. So if you see the "pppd" process taking close to 100% of CPU on the router, you should try different firmwares and versions.
     
  11. Toxic

    Toxic Administrator Staff Member

    so you have tried different firmwares but to now avail. did you reset to factory defaults when you upgraded the firmware? also have you tried using different network cables? maybe the one your using once you add the WRT54G is faulty.

    i would recommend www.thibor.co.uk download thibor15c firmware fo your router. reset your router BEFORE upgrading the firmware. then once you have done this and Thibor15c is loaded, clear NVRAM and reset the factory defaults within the Webgui.
     

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