FTD DHCP Server not handing out addresses

[PatrickCavell85782]

We've configured a routed FTD to act as the DHCP server on one interface for guest users. The interface is configured as a 10.100.176.2/23. The DHCP pool for the interface is less than 256 hosts (10.100.176.3 - 10.100.176.254). I understand the pool must be no more than 256 hosts. This a migration from an ASA performing this task. The ASA is configured similarly but it successfully hands out addresses. We do not have have Auto-Configuration checked.

Any thoughts on what we may be doing wrong?

Thanks for any assistance.

[MHM Cisco World]

Check this restrictions of dhcp in ftd

• The maximum available DHCP pool is 256 addresses.

• You can configure only one DHCP server on each interface. Each interface can have its own pool of addresses to use. However the other DHCP settings, such as DNS servers, domain name, options, ping timeout, and WINS servers, are configured globally and used by the DHCP server on all interfaces.

• You cannot configure an interface as a DHCP client if that interface also has DHCP server enabled; you must use a static IP address.

• You cannot configure both a DHCP server and DHCP relay on the same device, even if you want to enable them on different interfaces; you can only configure one type of service.

• FTD device does not support QIP DHCP servers for use with the DHCP proxy service.

• The DHCP server does not support BOOTP requests.

[PatrickCavell85782]

I don't think we're violating any of these restrictions.

[MHM Cisco World]

You cannot configure both a DHCP server and DHCP relay on the same device

Are you sure you not run both relay and server?

MHM

[PatrickCavell85782]

You may be right. I will check with my customer to see if they do indeed have DHCP Relay already configured. Thanks!

[PatrickCavell85782]

Problem solved. Changed the FTD interface from a /23 to a /24 and DHCP server start handing out addresses.

[MHM Cisco World]

Thanks for update me 

Have a  nice summer 

MHM