Chapter 6 Network

Enable and Configure the DHCP Server

STEP 1

STEP 2

STEP 3

STEP 4

STEP 5

STEP 6

STEP 7

From the LSM menu, select Network > DHCP Server. Then, click the Configure DHCP tab.

On the Configure DHCP Server page, check Enable DHCP Server to enable the DHCP server. Then, configure the following options as required:

•In the Lease Duration field, enter a value between 1 and 600 minutes (default 60 minutes) for the duration of the lease to the DHCP client.

•Check Allow BOOTP clients if you want the device DHCP server to respond to lease requests from BOOTP clients.

Note Do not check Allow BOOTP clients if some LAN devices use the BOOTP protocol to retrieve their operating system or firmware from a separate BOOTP server.

In the DHCP Address Pool table, configure IP address pool options:

•To use an IP address group, select IP Address Group. Then, select an existing group from the drop-down list

•To use a subnet, select IP Subnet. Then, type the subnet IP address and Mask.

•To use a range of IP addresses, select IP Range. Then, type begin and end of the address ranges.

To allow the device to provide the DHCP clients with different DNS server IP addresses than those configured on the device, check Override Default DNS Settings.

DNS settings are configured and managed from the Network > Configuration > DNS menu option.

Optionally, in the WINS Servers fields, type the IP addresses of up to two WINS servers for use by the client if you are using Windows networking.

Optionally, in the NBX NCP field, type the NBX network call processor (NCP) IP address if you want to allow NBX phones to retrieve the NCP IP address.

Click Apply to save the changes.

Note Ensure that the firewall rules configured on the device allow DHCP clients to send DHCP requests to the correct security zone and to receive their IP address by DHCP. For details, see “Firewall” on page 63.

Disable the DHCP Server

STEP 1

STEP 2

From the LSM menu, select Network > DHCP Server. Then, click the Configure DHCP tab. On the Configure DHCP Server page, clear the Enable DHCP Server checkbox.

170 X Family LSM User’s Guide V 2.5.1