GE HC HP - Manual (Page 45)

GE MDS Intrepid-HC HP Installation Guide 2-3
Defining IP Addresses
Before you can configure the MDS Intrepid-HC HP system, you need to define IP addresses using the craft
terminal.
The MDS Intrepid-HC HP includes two IP interfaces: an Ethernet interface, and a serial interface. Each interface
has its own IP address and IP mask.
The IP address is a four digit number separated by decimal points. Each IP address is a pair netid,hostid, where
netid identifies a network, and hostid identifies a host on the network. The IP mask separates between the netid and
hostid.
For example, if the IP address is 192.114.35.12 (11000000 01110010 00100011 00001100), and the IP mask is
255.255.255.0 (11111111 11111111 11111111 00000000), the netid is 192.114.35, and the hostid is 12.
An IP interface can only communicate with hosts that are on the same net (have the same netid). In the example
above, the interface can communicate only with hosts that have netid 192.114.35 (for 1 to 255).
If The transceiver has a frame to send to a host that is not on the Ethernet IP netid or the serial IP netid, the frame
should be sent to an intelligent device (usually a gateway) on the network. Such a device, known as a "default
router", will know how to send the frame over the internet. The default gateway should be a host on one of the
Transceiver interface netids.
The following figure shows how the transceiver is integrated in the local network.