Problem: User reported unable to allocate an ASA DHCP reservation for laptop and MyCloud drive when even using the home network. Follow the below solution steps to configure allocate Cisco ASA DHCP Reservation.
Solution 1: Add Static ARP Entry
Adding a static ARP entry into the ASA would solve the problem.
Solution 2: Create ASA DHCP Reservation
In Cisco ASA Series version 9.13(1), we can now add a static DHCP reservation (MAC address to IP address).
DHCP reservation: The ASA DHCP server now supports DHCP reservation. You can assign a static IP address from the defined address pool to a DHCP client based on the client’s MAC address. New/Modified commands:
Step 1: Setup DHCP.
dhcpd address 10.254.254.10-10.254.254.75 inside
dhcpd enable inside
Step 2: Specify the MAC address as xxxx.xxxx.xxxx to add reservation. If in doubt, ping the existing IP address then execute a
show arp command to show all the MAC addresses the firewall can see, then you can copy and paste it into the following command:
dhcpd reserve-address 10.254.254.50 38f9.d326.66cc inside