DHCP Service
Dynamic Host Configuration Protocol (DHCP) service supplies IP addresses to network devices. Only one Eos device (typically the primary) on the network is necessary to do this properly. Therefore you should disable the DHCP server on all Eos devices other than the intended primary.
CAUTION: Enabling or disabling DHCP services requires rebooting your console.
If this section is grayed out and you are unable to change any settings, you may need to install Net3 Services on your console. Net3 Services are installed with ETC's Gateway Configuration Editor (GCE) software, available for download from etcconnect.com.
Enable
Enables the Eos DHCP address server. DHCP is a TCP/IP protocol that dynamically assigns an IP address to a network device when it requests one.
The Eos DHCP server is intended to be used on non-routed networks and will not serve IP addresses across a router.
CAUTION: While there should only be a single DHCP server active on a network, it is still possible to start more than one DHCP server at a time. This can lead to unstable conditions and network communications issues.
The Eos DHCP server then uses the following settings to determine which IP addresses it gives out.
First IP Address
This sets the starting IP address of the range of IP addresses the DHCP server will give out.
Number of Addresses
This sets how many IP addresses the DHCP server will give out. A setting of 500 means it will give out IP addresses to the first 500 devices that ask for an IP address.
Subnet Mask
This sets the logical network size vs. the device address. ETC’s default is 255.255.000.000 (class B). This is the subnet mask that the DHCP server will give to network devices.
Routed
If checked, you can use the default gateway box, below, to specify the gateway you would like DHCP devices to use. If unchecked, the DHCP server will serve the same value for both the devices IP address and gateway, which is a suitable configuration for non-routed networks.
Default Gateway
This specifies the IP address of a router if one is present on your network. This is the gateway IP address that the DHCP server will send to network devices to use. If you are on a flat or non-routed network, the Gateway IP address should match the IP address of the device. In order to configure this DHCP server to send out matching gateway IP addresses, configure this gateway IP address to match the IP Address field. Then the DHCP server will give out a gateway IP address that matches the IP address.
Learn Network Devices
Clicking this button will trigger the DHCP service to search the network for existing devices, and add them to its table of known addresses. If you have equipment with statically assigned IP addresses in your network, this will ensure the DHCP service does not serve out any IP addresses which conflict with those devices.