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IP conflict - Two WRT54gl used as accesspoints

Discussion in 'Tomato Firmware' started by kaesmaen, Sep 15, 2009.

  1. kaesmaen

    kaesmaen Addicted to LI Member

    Dear experts,

    I kindly ask for your help because I will breakdown soon :eek:

    The situation:
    - A WRT54GL is used as a router and is connected to a S-DSL modem which itself got an fixed IP adress in the internet. The router's IP is 192.168.1.100 and it works as an DHCP server in our network. The IP Address Range is from 192.168.150 up to .200
    - We use a file server with Windows Server 2000 which has a fixed IP 192.168.1.1. It got an SQL server running on it for a business software solution.
    - We (try to) use two WRT54GL as access points to get the notebooks connected to the network. These WRT got fixed IPs as 192.168.1.30 and .31 (firmware 1.25)

    The problem:
    After some hours of wonderful function the Windows 2000 Server brings a warning that there is / has been an IP conflict with the MAC address of one of the access points. Often the connection from the logged-in clients to the SQL-Bussiness-Solution is cut off and everyone hast to start again.

    Interesting: an old 3Com access point did not make these problems. But unlike the WRTs it got just one MAC address for LAN and WLAN.

    Could someone please help me? Thx a lot in advance! :)

    Best regards

    Marc

    PS: Sorry for my bad english!
     
  2. baldrickturnip

    baldrickturnip LI Guru Member

    are all the PC's connected to the network using DHCP ? maybe one of them has a manually assigned IP address that is conflicting
     
  3. kaesmaen

    kaesmaen Addicted to LI Member

    Hi baldrickturnip,

    thx for your question. There are just two pcs, one laser copier, two print servers and the accesspoints with fixed IPs. But I've checked that before. There is no accordance. All other pcs get their IP from the router.

    Best regards

    Marc
     
  4. rhester72

    rhester72 Network Guru Member

    I suspect your DHCP range overlaps the static IPs in use.

    Rodney
     
  5. baldrickturnip

    baldrickturnip LI Guru Member

    or maybe you have a second DHCP server running that you are unaware of - maybe check the configuration of the win2k server and see if it may have a DHCP server running
     
  6. kaesmaen

    kaesmaen Addicted to LI Member


    Hi baldrickturnip,

    very hot hint! I never activated DHCP server functionality on the w2k server. But the service was actually running!!! Hope this was the prob. Many, many thx!!!

    Best regards

    Marc
     

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