Hi, in our network we have a RB750 routerboard. 1th interface connected to internet (WAN) and on interface 2 there is a lan network which is connected to hubs. To share internet for users define a DHCP server that contain leased IP and mac address,firewall (NAT,Masqurate) and queue. there are three access point in the lan for mobile devices. every thing was ok and all users connected to internet firewall by NAT since two days ago, but suddenly some of mobiles failed to connect to internet. i check the settings everything was ok in DHCP server,firewall and queue. some mobiles can connect to wifi but cannot connect to internet. i delete records which defined for my cellphone and add them again but nothing was changed. I try to change the Ip in DHCP SERVER for those MAC and also reset and config access points to find problem but there can not connected again. Status column in DHCP SERVER->Leased for these devices show “waiting” and for others show “busy” or “bound”. i guess our mac address were blocked because when i change the Mobile IP with another it cannot connect to internet,it is very strange.
So, I need to solve the problem very soon but i don;t know why it was happened?!
Thank you