Help to understand a router / switch issue

Discussion in 'Home Networking' started by [Lnz], Apr 23, 2009.

  1. [Lnz]

    [Lnz] Guest

    I have an issue that I don't quite understand and I would appreciate
    comments and suggestions.

    I just added a d-Link DGS 1005D gigabit switch to my network
    The switch connects my main computer to a gigabit NAS and to the
    router, a Draytek Vigor 2800vg

    However, the computer cannot see the router, does not ping it and
    cannot open the web interface, regardless of whether I use DHCP or

    If I connect the computer directly to the router, everything seems to
    work fine.

    However, when I connect the switch to a previous Draytek Vigor, a
    2600Plus, the computer sees the router, pings it, etc.

    It seems odd that the switch would be incompatible with the 2800vg
    router, I have not found any mention of it anywhere on the net.

    We had a lightning storm not long ago, before I added the switch.

    The question is:
    Does it make sense to think that the 2800vg router got damaged by the
    storm enough so that it cannot see devices over the switch but still
    work for devices connected directly and wirelessly?

    Has anybody had any experience in this respect?

    How can I test to reach a definitive answer? Replacing the router
    would set me back a tad less than a couple of hundred pounds and the
    current conditions of my business strongly advise against spending
    anything at all.


    [Lnz], Apr 23, 2009
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  2. [Lnz]

    tinnews Guest

    Well I have an almost identical set-up to yours, a LAN using a gigabit
    switch to interconnect several computers and a Draytek Vigor 2820
    connecting the switch to the outside world. It works fine so I
    suspect you have *something* broken, though whether its the router or
    something else I wouldn't know.
    tinnews, Apr 23, 2009
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  3. [Lnz]

    [Lnz] Guest

    I have had the switch and the 2600 running without problems for 4/5
    days now.

    I'll try the 2800 again in a couple of days. Maybe it fixed itself

    Otherwise I'll think about a 2820...

    [Lnz], Apr 28, 2009
  4. [Lnz]

    Jon Guest

    Does this switch contain a DHCP server or is it a dumb box? If so then
    you have the draytek and the switch both trying to dish out IPs.

    Disable the DHCP on the switch (if it has DHCP of course).
    Jon, Jun 23, 2009
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