DHCP Server¶
Overview¶
The DHCP server in flexiWAN provides IP address, default gateway and DNS to client devices connected to it. DHCP server can be enabled per interface. By default, DHCP is not enabled on any interface.
DHCP server configuration can be found in device settings, under the “DHCP” tab.
Configuring DHCP¶
Navigate to Inventory > Devices. Click on the device name for device settings, then click on the “DHCP” tab.
Click “Add DHCP” button to configure and apply new DHCP settings. Select the interface on which you want to enable DHCP server and choose the IP ranges you wish to assign. For client DNS resolution, fill in your DNS servers. It is possible to add static assignments at this step or later. Static assignments are covered in the section below.
After configuring and addign DHCP, click on “Apply DHCP” to update the flexiEdge device with the DHCP settings. A job is sent to the flexiEdge device to provision it. Wait for the job to complete to make sure the configuration is applied. At this point, DHCP server is configured on the selected interface. The configuration will be executed only when the router is running and clients will get DHCP lease. Depending on the device status, you may need to request DHCP lease or renew network configuration on the client.
Static Assignments¶
To configure “Static Assignments”, click on the “+” icon. Enter the device host name, MAC address and the IP address you which to assign. Once ready, click “Add Assigniment”. After adding all static assignments, make sure to click “Apply/Update DHCP”.
The assignment has been created and the device should receive the configured IP. This and all other static assignments can always be viewed on this page. Click on the DHCP row to see the static assignments details.
Updating existing DHCP settings¶
The DHCP settings can be edited by clicking on yellow gear icon labeled “Update DHCP” in the “Actions” column on the DHCP server page. Edit the DHCP settings and click on “Update DHCP” to update the changes to the device.
Removing DHCP settings¶
To delete DHCP settings for an interface, click the delete button in Actions column. Clicking on “Yes” to delete DHPC, will add a job to delete the settings from the flexiEdge device. Confirm the job to remove DHCP settings has been completed by visiting Troubleshooting > Jobs page. “Force Delete” option deletes the entry without waiting for the job to complete, use this option only in case of issues using the first option.
Troubleshooting¶
The DHCP server configuration can be viewed in:
/etc/dhcp/dhcpd.conf
More details about DHCP requests and leases can be viewed by executing the following command on flexiEdge device:
sudo systemctl status isc-dhcp-server
Where the output will show dhcpd log.
