LAN DNS problem

Discussion in 'Tomato Firmware' started by Lord KiRon, Jul 4, 2008.

  1. Lord KiRon

    Lord KiRon Addicted to LI Member

    Ok , problem goes like this - I had a DHCP (MPLS) cable connection to my provider and lately moved to use L2TP dialer.

    The problem is that all local computers (registered through Static DHCP) no longer reachable by their names.
    by IP - no problem , by name - I can't even ping :(

    Again this worked OK when DHCP was used , now with L2TP it does not.
  2. Lord KiRon

    Lord KiRon Addicted to LI Member

    To test things returned everything to DHCP and the problem still occurred.

    So I saved configuration to file, reset NVRAM , restored configuration , powered down all that connected to network , started router , started switch , then started computer and now DNS names works fine.

    So not sure what of above helped but something did.

    One thing I can say that I have Netgear 1GB 8 ports switch connected to the router (and all my network devices connected to it to use 1GB speed on LAN) .
    So when I made my move from DHCP (MPLS) to L2TP dialer I tested it on PC first - connected cable modem directly to router and used PC's Vista x64 VPN to dial (cables support insisted to do it that way to verify connection - they do not support routers).
    So may be changing topology is what created the problem.

    Now everything works fine (almost) since all the devices can be accessed by their DNS names but one XP SP3 based computer can't be seen in network neighborhood on Vista as it was before (but can be accessed).
    No idea how to fix that.

    Just wanted to let you know.
  3. Lord KiRon

    Lord KiRon Addicted to LI Member

    Just an update - the problem still happens DNS somehow changes , sometimes it takes several days sometimes several minutes.
    I partially worked it around by checking "Use recived DNS with Static DNS" and entering Open DNS IPs but thats work around, not a real solution :(
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