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Thread: Losing connectivity when I put in a switch or hub

  1. #21
    Smiles
    Guest

    Re: Losing connectivity when I put in a switch or hub

    terryc wrote:
    > On Thu, 25 Jun 2009 13:13:30 +0100, John McCabe wrote:
    >
    >
    >> As I mentioned to someone else, I appreciate your input, but I'm not
    >> really interested in the Wi-Fi issue at this time; it's the problem with
    >> the wired connection through a hub/switch to the router that's of more
    >> concern.

    >
    > 1) cables.
    > 2) auto neg to auto neg usually equals disaster.
    > 2) switch management?
    > 30 switches can take a few seconds to learn about changed gear.
    > 4) tried pinging the opposite end from each end?
    >
    > Might be better to start a new thread for this. Did a little search, but
    > couldn't find your hardware details, brand/model, of all the gear.
    >
    >

    OK I have not read every reply but to my last post I was told
    His switches are unmanaged - no login capability, no DHCP, no IP
    addresses.

    what is giving IP address or are you using static
    if you do not have a switch (router) giving network address
    beware most ISP modems limit there supported network mine only supports
    three directly that why I was a managed switch
    Smile

  2. #22
    Char Jackson
    Guest

    Re: Losing connectivity when I put in a switch or hub

    On Fri, 26 Jun 2009 19:20:17 -0400, Smiles
    <smile_inspector@hotmail.com> wrote:

    >terryc wrote:
    >> On Thu, 25 Jun 2009 13:13:30 +0100, John McCabe wrote:
    >>
    >>
    >>> As I mentioned to someone else, I appreciate your input, but I'm not
    >>> really interested in the Wi-Fi issue at this time; it's the problem with
    >>> the wired connection through a hub/switch to the router that's of more
    >>> concern.

    >>
    >> 1) cables.
    >> 2) auto neg to auto neg usually equals disaster.
    >> 2) switch management?
    >> 30 switches can take a few seconds to learn about changed gear.
    >> 4) tried pinging the opposite end from each end?
    >>
    >> Might be better to start a new thread for this. Did a little search, but
    >> couldn't find your hardware details, brand/model, of all the gear.
    >>
    >>

    >OK I have not read every reply but to my last post I was told
    >His switches are unmanaged - no login capability, no DHCP, no IP
    >addresses.
    >
    >what is giving IP address or are you using static


    He's using a modem/router combo device. The router portion includes a
    DHCP server. His printer gets an IP via DHCP and the computer has a
    static address.

    >if you do not have a switch (router) giving network address
    >beware most ISP modems limit there supported network mine only supports
    >three directly that why I was a managed switch


    I've still never seen a switch with a DHCP server. DHCP client, yes,
    but a DHCP server would be odd.


  3. #23
    John McCabe
    Guest

    Re: Losing connectivity when I put in a switch or hub

    On Thu, 25 Jun 2009 10:47:47 -0500, Char Jackson <none@none.invalid>
    wrote:

    >On Thu, 25 Jun 2009 13:07:27 +0100, John McCabe
    ><john@nospam.assen.demon.co.uk> wrote:
    >
    >>On Wed, 24 Jun 2009 09:11:57 -0500, Char Jackson <none@none.invalid>
    >>wrote:
    >>
    >>>Lastly, could this be a speed/duplex mismatch between the various
    >>>Ethernet devices?

    >>
    >>Mmm - yes - that is a possibility. The PC network interface is an
    >>on-bard Marvell Yukon gigabit thing and we're aware of issues here
    >>where some devices can autonegotiate half-duplex connections. I
    >>haven't got round to setting the device to fixed 100MBPS Full-Duplex
    >>to try it yet.

    >
    >I'm pinning some hope on that, so let us know! If the problem isn't
    >there, maybe it's some kind of weird incompatibility that can only be
    >fixed with a firmware update, but that seems unlikely.


    I was pinning my hopes on that too - no joy! It looks like some weird
    incompatibility. I might try updating the firmware in my router, we'll
    see (there's some that's about a year younger than what I've got).

    Thanks to everyone for their advice and suggestions though. It was
    much appreciated.


  4. #24
    Char Jackson
    Guest

    Re: Losing connectivity when I put in a switch or hub

    On Mon, 29 Jun 2009 13:08:27 +0100, John McCabe
    <john@nospam.assen.demon.co.uk> wrote:

    >On Thu, 25 Jun 2009 10:47:47 -0500, Char Jackson <none@none.invalid>
    >wrote:
    >
    >>On Thu, 25 Jun 2009 13:07:27 +0100, John McCabe
    >><john@nospam.assen.demon.co.uk> wrote:
    >>
    >>>On Wed, 24 Jun 2009 09:11:57 -0500, Char Jackson <none@none.invalid>
    >>>wrote:
    >>>
    >>>>Lastly, could this be a speed/duplex mismatch between the various
    >>>>Ethernet devices?
    >>>
    >>>Mmm - yes - that is a possibility. The PC network interface is an
    >>>on-bard Marvell Yukon gigabit thing and we're aware of issues here
    >>>where some devices can autonegotiate half-duplex connections. I
    >>>haven't got round to setting the device to fixed 100MBPS Full-Duplex
    >>>to try it yet.

    >>
    >>I'm pinning some hope on that, so let us know! If the problem isn't
    >>there, maybe it's some kind of weird incompatibility that can only be
    >>fixed with a firmware update, but that seems unlikely.

    >
    >I was pinning my hopes on that too - no joy! It looks like some weird
    >incompatibility. I might try updating the firmware in my router, we'll
    >see (there's some that's about a year younger than what I've got).
    >
    >Thanks to everyone for their advice and suggestions though. It was
    >much appreciated.


    Thanks for the update and good luck!


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