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Overiding port transmission settings

Discussion in 'Networking Issues' started by Nicke, Apr 5, 2005.

  1. Nicke

    Nicke Network Guru Member

    Hi All,

    Got a Linksys WRT54G v3.03.1 and cable modem Motorola SurfBoard 5100E.

    From earlier experiences with both Netgear and 3Com routers I know that the handshake between the modem and the router (any router or NIC) does not work especially well having the NIC or router set on autodetection for transmission speed/mode.

    My ISP recommends setting the NIC/router to 10BaseT, half duplex.

    Both Netgear and 3Com routers allows the user to override autodetection and manually set the ports transmission mode.

    Having been on the phone with Linksys techsupport I understand this is not possible with the Linksys router.

    Is there any way I can fix this with 3rd pty firmware or any other hack? or should I just return this p-o-junk? to the store I got it from?

    Appreciate any help on the matter!

  2. Toxic

    Toxic Administrator Staff Member

    there is a way afaik with telnet using some command to force the ports into 10 half duplex, though would need to look the commends up again.

    i used to have a surfboard 3100 and neverhad a problem with 100 full duplex with my WRT54G.
  3. Nicke

    Nicke Network Guru Member


    OK, apologies for sounding extremely stupid (I feel like it writing this) How do I get telnet access to the router?

    Tried telnet in the command window and got an error message -cannot connect!?!?

    Cannot find anything in the webadmin interface on switching on/off telnet access from within the LAN!??

    and where can I get a descent users manual on the router? the one that came with it was a joke to say the least...

  4. Toxic

    Toxic Administrator Staff Member

    Ok found the text for this...

    set it by echo-ing values inito /proc/sys/dev/adm6996/port0/xxxxxx (port 0 is the 'Internet' port, 1-4 are the LAN ports, and 5 is the internal connection to the CPU).

    I.E. 'echo 0 >/proc/sys/dev/adm6996/port0/auto-negotiating'

    the manual should help here:


    example....10 meg half duplex

    echo 0 >/proc/sys/dev/adm6996/port0/duplex

    echo 10 >/proc/sys/dev/adm6996/port0/speed
  5. Nicke

    Nicke Network Guru Member

    Thanks! but...

    from your answer and the link to SveaSoft I take it I need to replace the original firmware with eg SveaSoft to actually get telnet capablities on the router.

    I'd rather return it to the store and get a good quality router with decent capabilities from start, rather than start tampering with a brand new product -guarantees and such....
  6. t4thfavor

    t4thfavor Network Guru Member

    i will tell you one thing, the wrt series is the only series router that i will recomment to anyone ever. it has the best coverage/features around. and the fact that the firmware is open source makes it have the best support around. the possibilities are unlimited. if i was you i would get another cable modem instead of router. 3com is turning their stuff into junk and netgear has been junk since they switched to plastic cases.
    but who am i? I guess im just some jerk who doesnt like to restart his router every 12 hours...

    good luck.

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