[WRT54G] Only 10mb in LAN

Discussion in 'Cisco/Linksys Wireless Routers' started by neoyoyo, Jan 25, 2006.

  1. neoyoyo

    neoyoyo Network Guru Member

    Hello World ;)

    As said in the title, I a LAN-rate problem with my WRT54G (v2.0 Europe) : he's limited to 10 Mb/s.
    However, my Windows say that the connection is a 100Mb...
    I have two computers, one desktop under Windows XP Pro (SP2) and one laptop with Windows XP Family (SP2).
    All have a 10/100 network adapter and my cable are Cat. 5 STP.

    I've try to :
    - disable all firewall/antivirus on the two computers
    - set up a FTP server on the desktop
    - dowload a large file (> 1 Gb) with the laptop

    As a result, the rate does not exceed 1.5 MB (10 Mb).

    My firmware is DD-WRT v23 final, so with SNMP, the OID .iso.org.dod.internet.mgmt.mib-2.interfaces.ifTable.ifEntry.ifSpeed (. return :
    interfaces.ifTable.ifEntry.ifSpeed.1 : 10000000
    interfaces.ifTable.ifEntry.ifSpeed.2 : 0
    interfaces.ifTable.ifEntry.ifSpeed.3 : 0
    interfaces.ifTable.ifEntry.ifSpeed.4 : 0
    interfaces.ifTable.ifEntry.ifSpeed.5 : 10000000
    interfaces.ifTable.ifEntry.ifSpeed.6 : 10000000
    interfaces.ifTable.ifEntry.ifSpeed.7 : 10000000
    interfaces.ifTable.ifEntry.ifSpeed.8 : 10000000
    interfaces.ifTable.ifEntry.ifSpeed.9 : 10000000
    And here is an extract of the configuration file made by MTRG's cfgmaker
    Target[LAN]: 7:public@192.168.X.X:
    SetEnv[LAN]: MRTG_INT_IP="" MRTG_INT_DESCR="vlan0"
    [b]MaxBytes[LAN]: 1250000[/b]

    Within DD-WRT configuration webpage, I've try to force the 100Mbit rate by disabling "Auto-Negotiate" under Setup->VLANs for ports 1, 2, 3 and 4.
    But this is not the solution ...

    I have the same problem with the latest US firmware (4.20.7).
    So I've send a mail to Linksys' Support, and their answer was that the problem is due to a disfonctionnement of the switch, and after a firmware upgrade that doesn't resolve the problem, he still remain.

    The serial number is of my router is CDF50D7Q.....
    Does anybody have the same problem and who have found a solution (different from using Linksys guarantee) ?
  2. jgutz20

    jgutz20 Network Guru Member

    check to make sure the adapters are set to 100 with full duplexing?
  3. neoyoyo

    neoyoyo Network Guru Member

    Yes, the two adapters are set (forced) to 100Mb with full duplex and the drivers are up to date...
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