ETC Eos v1.3 - Manual (Page 306)

292 Eos Operations Manual
Enable Address Server
Net3 Services uses a DHCP (Dynamic Host Configuration Protocol) address server. DHCP is a
TCP/IP protocol that dynamically assigns an IP address to a network device when it requests one.
This is a small and simple DHCP server that is intended to be used on non-routed networks. It will
not serve IP addresses across a router.
Clicking in the enable box will start the DHCP server in the Eos console. It will use the settings
below to determine which IP addresses it gives out.
• IP Address Pool - This sets the starting IP address of the range of IP addresses the DHCP
server will give out.
• Pool Size - 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.
• Gateway IP - 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 Pool field.
Then the DHCP server will give out a gateway IP address that matches the IP address.
Enable SNTP Time Server
Clicking in the enable box will start the SNTP (Simple Network Time Protocol) service. You
determine if the service is running as a client (receiving time messages) or as a server (sending
time messages) during the installation process.
Enable TFTP Server
Clicking in the enable box will start the TFTP (Trivial File Transfer Protocol) server.
• Root Path - This sets the directory where files are to be served through TFTP. This must be
the full path to the directory, including drive letter. For example: C:\etc\nodesbin
C A U T I O N : There should only be a single DHCP server active on a network. It is possible to
start more than one DHCP server on a single network (nothing is built-in to DHCP
servers to prevent this from happening). If this occurs, it will result in unstable
conditions and possibly result in network communications failures.