Plugging network switch ports together?

Discussion in 'Home Networking' started by Paul Conners, Nov 17, 2012.

  1. Paul Conners

    Paul Conners Guest

    Due to limited space in the tiny wiring closet, the consumer-grade Cisco
    gigabit 24-port switch is mounted vertically on the wall with ports facing

    I have fished more than one bit of trash out of an open port connector and
    would like to protect them in the future.

    Would there be a problem if I were to plug a patch cable into 2 ports? This
    is the simplest means I can think of to cover them.

    Paul Conners, Nov 17, 2012
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  2. Paul Conners

    grinch Guest

    If you connect 2 ports on the same switch together, the switch will get
    it own mac address back, go into error disabled mode and shut the ports

    Buy a bag of RJ45 plugs and put one of them in to each port,nothing will
    be connected so no problem . Or have you ever heard of insulation tape ,
    just tape over the open ports.
    grinch, Nov 17, 2012
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  3. Paul Conners

    Henry Law Guest

    Tape; definitely tape. Ordinary household sticky tape would do, I
    suppose. You might think of cutting a piece of paper to size and then
    taping it in position.
    Henry Law, Nov 17, 2012
  4. Paul Conners

    Bernard Peek Guest

    Gaffer Tape: it has dark side and a light side. It binds the universe
    Bernard Peek, Nov 17, 2012
  5. Paul Conners

    Henry Law Guest

    And, together with WD40, makes up the Universal Tool Kit. If it moves
    and shouldn't, use gaffer tape. If it doesn't move and it should, use WD40.
    Henry Law, Nov 17, 2012
  6. Paul Conners

    Paul Conners Guest

    If you connect 2 ports on the same switch together, the switch will get
    As long as it's just those ports and cause no electrical damage, I can live
    with that: simply power-cycle the switch when those ports are needed.

    Future additional network expansion will be little and can be plugged into
    the switch at night or with advance notice of shutdown.
    Paul Conners, Nov 18, 2012
  7. Paul Conners

    Brian Cryer Guest

    The trouble with tape is that when you remove it you often leave a sticky
    patch. Tape is an option, but personally I'd use some empy RJ45 plugs
    (although they might be easier to later remove if they had a bit of cable
    attached to them).
    Brian Cryer, Nov 19, 2012
  8. Paul Conners

    PeeGee Guest

    It may be "try it and see" as some switches will not recognise the
    "loop" and saturate the switch with endless messages (a self-induced
    DoS) :-( I would hope the Cisco is more intelligent ...


    "Nothing should be able to load itself onto a computer without the
    knowledge or consent of the computer user. Software should also be able
    to be removed from a computer easily."
    Peter Cullen, Microsoft Chief Privacy Strategist (Computing 18 Aug 05)
    PeeGee, Nov 20, 2012
  9. Paul Conners

    grinch Guest

    The Cisco is, which is why it will go into error disabled to stop you
    doing something stupid. I don’t know that it wont do any harm over an
    extended period of time.

    On Cisco's larger switches you have to log in and reset the error dis
    ports ,but it is possible to configure them to do it automatically once
    the loop has cleared.

    If we are talking SOHO switches managed by http I don't know what would
    happen if you loop the ports as I think Cisco's SOHO switches are just
    old Linksys re-badged
    grinch, Nov 20, 2012
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