Thank you very much I finally found there was actually a new AP badly configured by client who wanted to avoid setup charges from us and enable dhcp server in the Nanostation2 AP with the same range of IPs. I switch the new client off and for 5hrs and I did not have any problem. Then I visited him and found the anomaly and fixed it. Five days now and am happy.
You have really assisted me. Good work you are doing. Yusuf ________________________________ From: Butch Evans <[email protected]> To: Mikrotik discussions <[email protected]> Sent: Monday, November 14, 2011 7:14 PM Subject: Re: [Mikrotik] DHCP Server - Leases Status - busy On Mon, 2011-11-14 at 04:46 -0800, Yusuf Sengeza wrote: > Proxy Arp is not enabled on interface, do I have to enable it? No. Proxy-arp, when enabled, is something that CAN cause the behavior you are seeing. Don't turn it on unless you NEED it. http://blog.butchevans.com/2010/06/when-and-why-proxy-arp/ will help explain when it is needed. > I have only one link that has multiple devices behind running Station > WDS and Ap WDS. The rest of the links run on AP or STATION. Are any of the devices with station only set up as bridges? Another possible reason for the IP conflict messages with DHCP is improper bridging behind station devices that are "bridged". I am just taking a stab in the dark here at possible reasons for the failure you are seeing. I am assuming you are using Windows 7 and seeing errors while attempting to get an IP from the DHCP server. Other than what I mention above for reasons, some less likely possibilities are: 1. There may actually BE a conflict if there is a device on the network with an IP in the range the DHCP server is handing out - check your pool to fix this problem. This can be caused by improper pools as well as someone "stealing" access using your IP space manually. 2. A rouge DHCP server on the network can cause this as well. To check for this, turn on the DHCP server alerts for the appropriate interface. http://wiki.mikrotik.com/wiki/Manual:IP/DHCP_Server#Alerts is the detail on how to do that. If it is NONE of those, then perhaps wireshark can tell you what is happening. -- ******************************************************************** * Butch Evans * Professional Network Consultation * * http://www.butchevans.com/ * Network Engineering * * http://store.wispgear.net/ * Wired or Wireless Networks * * http://blog.butchevans.com/ * ImageStream, Mikrotik and MORE! * * NOTE THE NEW PHONE NUMBER: 702-537-0979 * ******************************************************************** _______________________________________________ Mikrotik mailing list [email protected] http://www.butchevans.com/mailman/listinfo/mikrotik Visit http://blog.butchevans.com/ for tutorials related to Mikrotik RouterOS -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://www.butchevans.com/pipermail/mikrotik/attachments/20111123/fe4aea50/attachment.html> _______________________________________________ Mikrotik mailing list [email protected] http://www.butchevans.com/mailman/listinfo/mikrotik Visit http://blog.butchevans.com/ for tutorials related to Mikrotik RouterOS
