Page 930 - Med Plaza and Cancer Center

PROPRIETARY AND CONFIDENTIAL DRAFT 28/Feb/03

6.2 Setting up the Internet Interface
Chapter 6: General Procedures

Ethernet Details

Physical Connection

Each device connects to an Ethernet switch or hub with Cat-5 Ethernet Cable
(10BaseT).

NOTE:
It is best to use a switch because the devices only communicate at 10 megabits.
A switch also improves the facility's network performance and keeps
unnecessary traffic from being routed to the alarm.

Addressing on a Managed Network

If connected to a managed network, the MedPlus TotalAlert™ Alarm Network
starts communicating automatically. Upon power-up, the alarm may behave as
follows:

1. Each device spends up to one minute looking for an address server, a
DHCP. If the server is found, the device accepts an IP address from the
server.

2. If a DHCP server is not found after one minute, the device enters
1
AUTOIP™ mode. Each device tries random IP addresses in the private
address range of 169.254.x.x, until it finds an unused one.

Addressing on an Un-Managed Network

If connected to an un-managed, stand-alone network that has only MedPlus
TotalAlert™ Alarm Network devices on it, the alarm may behave as follows:

1. The device continues to check for a DHCP server every two minutes,
waiting for a server to come on-line.

2. If a server comes on-line, the alarm discards the AUTOIP™ address and
uses the address given to it by the DHCP.

6

1. AUTOIP™ is a trademark of Net to Net Technologies, Inc.

MedPlus TotalAlert™ Alarm Network Operation and Maintenance Manual (man291ra) Page 6 - 13