TDT RZ2 Manual page 73

System 3
Class C
Class A defined networks contain a broad range of possible values since the subnet
mask allows for 24 bits or 16,777,214 addresses per network. A Class C network
contains 8 bits of IP addresses per network and so, allows up to 256 possibilities.
Gateway
Along with an IP address and subnet mask, networks may optionally use a gateway
which is required to send or receive data from outside the network. You can think
of a gateway as a node that serves as an access point to another network.
MAC Address
A device's MAC address or "Media Access Control" address is a unique number that
acts like a name for a particular network adapter. On a shared medium such as
Ethernet, this address is generally assigned to the hardware when it is constructed,
but may be manually modified in the UDP Interface.
For example:
The network cards in two different computers will have different MAC addresses, as
would an Ethernet adapter and a wireless adapter in the same computer.
The DHCP Protocol
DHCP or "Dynamic Host Configuration Protocol" is a protocol used by networked
devices (clients) to obtain various parameters necessary for the clients to operate in
an Internet Protocol (IP) network. By using this protocol, system administration
workload greatly decreases, and devices can be added to the network with minimal
or no manual configuration.
DHCP automates the assignment of IP addresses, subnet masks, default gateway,
and other IP parameters. Three modes for allocating IP addresses exist: dynamic,
reserved, and manual. The UDP interface relies primarily on dynamic mode for its IP
configuration.
Dynamic
In dynamic mode a client is provided with a temporary IP address for a given length
of time. This length of time is dependent on the server configuration and may range
from a long time (months) to several hours.
The current IP address can be renewed at any time by the DHCP client. This
renewal is used by properly functioning clients to maintain the same IP address
throughout their connection to a network.
Reserved
In reserved mode, the IP address is permanently assigned to a client via DHCP
server-side reservations. Please check the documentation for your DHCP server for
more information.
Class Start
192.0.0.0
End Default Subnet Mask
223.255.255.255 255.255.255.0
RZ-UDP Communications Interface
1-67