How to set a LAN port to 10 Base T ?

Discussion in 'Tomato Firmware' started by e-gaulue, Sep 29, 2012.

  1. e-gaulue

    e-gaulue Networkin' Nut Member

    My post is not Tomato specific but that's the firmware I use so...

    I'd like to use an old phone cable (cat 3 I hope) to hide wires in the house. I needn't fast internet, it's just for the printer.

    I'd like to know if there is a way to force one port to 10 FD on a linksys e3000. I didn't find anything in the interface but maybe directly with a comand line ?
  2. mpegmaster

    mpegmaster Addicted to LI Member

    Old Phone cable is designed to handle RF on copper... Network cables are designed to handle RF... Notice the wire twist and layout design.

    Put in a WEB... Wireless Ethernet Bridge and all is good! More flexibility.

  3. koitsu

    koitsu Network Guru Member

    1. You shouldn't need to force a port to any speed; IEEE 802.3 protocol (auto-negotiation) should handle this just fine.

    2. If you force duplex/speed, you need to do so on both ends of the link; so that would mean on both the router's LAN port PHY, as well as the device on the other end. If you're using a non-managed switch, etc. then you cannot do this. Auto-neg on one end and forced speed/duplex on the other will not work correctly/reliably.

    3. You should never, ever use full-duplex on 10mbit links. What you want is 10 half-duplex. This ensures full compatibility regardless of the complexities of pre-1998 802.3 specification changes (e.g. 802.3u and earlier).

    My recommendation to you would be to use the existing CAT3 wiring as a way to pull new CAT5e or CAT6 through the existing conduit/wall. Hire a contractor to do this for you. It's inexpensive and very easy for them to do. They can run multiple strands for you in a single run (e.g. two sets of CAT5e/CAT6 cables), assuming there's enough space in the conduits, etc... You'll be much happier with that.

    I cannot recommend the wireless ethernet bridge solution proposed. I have tried 3 different WEB-like products on present-day networks and I've found catastrophic bugs or behavioural problems with all of them. Some would steal MAC addresses of machines on my network (yes really, I spent quite a lot of time figuring this out), others would have PHYs which would reset randomly during heavy I/O (more than 20mbit/sec). If someone can recommend a reliable wifi ethernet bridge product I will purchase it and test it out, but I have yet to see one which has a firmware that doesn't behave like a piece of crap. I trust wire over wireless in all circumstances.
  4. mstombs

    mstombs Network Guru Member

    robocfg may be able to do what you want - but you'd need jffs to store the binary.
    An old 10 hub in the mix might be easiest...
    koitsu likes this.
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