E400 - Devices cannot get IP


I have some E400 installed, and some devices cannot connect to the access points E400 because seem that they cannot get IP. I attach pictures of that. Do you have any idea why?

Thank you

Is your DHCP server internal or external?

I have the E400 connected to a router brand cisco, that is the encharge to supply IP, so the Dhcp is activated in the router cisco and disabled in the access points E400 

Could you please provide the tech-support?

Thank You.

Hi, yes here i attach the url  of the tech support file:




  • Based on screenshots and logs shared, it seems that 802.11bg clients are not able to obtain IP.
  • Could you please share what type of security/encryption you have configured on those clients?