You can enable DHCP by following the steps below to allow allocating DNS
        address automatically. 
                
Note: 
                     If you want to enable the access control device's DHCP function,
                        you should enable it via other systems (e.g. iVMS-4200 client software). 
                 
            - 
                Visit the IP address of the device.
            
- 
                Enter the device user name and device password and log in to the device's web
                    page. 
            
- 
                Click  to enter the Basic Settings page.
            
- 
                Enable DHCP.
                
                    DNS address will be allocated automatically. 
 
- 
                Click Save.