Because SonicOS Enhanced allows multiple DHCP scopes per interface, there is no requirement that the subnet range is attached to the interface when configuring DHCP scopes.
To configure DHCP server for dynamic IP address ranges, follow these instructions:
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Step 1
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In the
Network > DHCP Server
page, at the bottom of the DHCP Server Lease Scopes
table, click Add Dynamic
. The Dynamic Ranges Configuration
window is displayed.
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Step 2
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In the
General
page, make sure the Enable this DHCP Scope
checkbox is selected if you want to enable this range.
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Step 3
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To populate the
Range Start
, Range End
, Default Gateway
, and Subnet Mask
fields with default values for a certain interface, select the Interface Pre-Populate
checkbox near the bottom of the page and choose the interface from the drop-down list. The populated IP addresses are in the same private subnet as the selected interface.
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Note
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Step 4
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Use the populated IP address range entries in the
Range Start
and Range End
fields or type in your own IP address range.
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Step 5
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Type the number of minutes an IP address is used before it is issued another IP address in the
Lease Time (minutes)
field. 1440
minutes (24 hours) is the default value.
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Step 6
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Use the populated gateway address or type the IP address of the gateway into the
Default
Gateway
field.
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Step 7
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Use the populated subnet mask or type the gateway subnet mask into the
Subnet Mask
field.
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Step 8
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BOOTP stands for bootstrap protocol, which is a TCP/IP protocol and service that allows diskless workstations to obtain their IP address, other TCP/IP configuration information, and their boot image file from a BOOTP server.
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Step 9
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Click the
DNS/WINS
tab to continue configuring the DHCP Server feature.
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Step 10
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If you have a domain name for the DNS server, type it in the
Domain Name
field.
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Step 11
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Inherit DNS Settings Dynamically using SonicWALL’s DNS Settings
automatically populates the DNS and WINS settings with the settings in the Network > DNS
page. This option is selected by default.
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Step 12
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If you do not want to use the SonicWALL security appliance network settings, select
Specify
Manually
, and type the IP address of your DNS Server in the DNS Server 1
field. You can specify two additional DNS servers.
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Step 13
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If you have WINS running on your network, type the WINS server IP address(es) in the
WINS
Server 1
field. You can add an additional WINS server.
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Step 14
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Click on the
Advanced
tab. The Advanced
tab allows you to configure the SonicWALL DHCP server to send Cisco Call Manager information to VoIP clients on the network.
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Step 15
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Under VoIP Call Managers, enter the IP address or FQDN of your VoIP Call Manager in the
Call Manager 1
field. You can add two additional VoIP Call Manager addresses.
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Step 16
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Under Network Boot Settings, in the
Next Server
field, enter the IP address of the PXE boot server (TFTP server) that a PXE client uses during the next stage of the boot process.
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The fields under Network Boot Settings are used in a Pre-boot Execution Environment (PXE), in which the client boots up using files obtained over a network interface. The PXE client obtains the IP address and name of the PXE boot server, and the boot file name, from the DHCP server.
When using these options, select PXE under DHCP Generic Options.
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Step 17
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In the
Boot File
field, type in the name of the boot file that the PXE client can get over TFTP from the PXE boot server.
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Step 18
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In the
Server Name
field, type in the DNS host name of the PXE boot server (TFTP server).
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Step 19
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Step 20
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Click
OK
to add the settings to the SonicWALL security appliance.
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Step 21
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Click
Accept
for the settings to take effect on the SonicWALL security appliance.
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For more information on VoIP support features on the SonicWALL security appliance, see “VoIP” .