Micromod Micro-DCI: EP1000A E-Port - Manual (Page 33)

EP1000A E-Port Instruction Manual
Installation 29
2.4.3 Ethernet Network Connection
2.4.3.1 Ethernet Network Considerations
Since E-Port networks are high-performance, realtime networks, the following considerations should be
observed when designing your network.
2.4.3.1.1 Installation Requirements
• All E-Ports and their associated PCs must be on the same subnet; that is, no routers can be
used between E-Ports and their associated PCs. Switches or routers should be used to isolate
this subnet from the rest of the corporate network, to avoid limiting performance due to heavy
network traffic.
• If there are any external firewall devices between the E-Port and the computer, they must be
disabled or be configured to pass UDP ports: 20034,4666, and 4669. The Windows XP firewall
is configured automatically by the E-PortSetup application.
• If the E-Port is used to connect your computer with a corporate LAN that uses a proxy server
for Internet web browsing, you must exclude the IP address of your E-Port unit in your web
browser’s proxy server settings/preferences. If this is not done, attempts to connect to a web
page on the LAN will fail, because the proxy server will attempt to route such requests outside
the LAN. For most web browsers, this can be accomplished in the Advanced settings for the
proxy server configuration. Set the network mask to 255.255.255.0.
2.4.3.1.2 Installation Recommendations
For best performance, MicroMod Automation recommends that you:
• Use 100 BaseTx computer interfaces
• Use 100 BaseTx switches, rather than hubs
2.4.3.2 Connecting to an Existing Network
If you are connecting the E-Port unit to an Ethernet switch, use an RJ-45 patch cable to connect the E-Port
unit to an unused network jack.
2.4.3.3 Connecting Directly to a Network Card in a Computer
If you do not have a switch, and want to connect 1 E-Port unit directly to a computer, use an RJ-45 cross-
over cable to connect the E-Port unit to the host computer.
✎ Notes You cannot use an RJ-45 patch cable to connect the E-Port unit
directly to a network card in a computer.
The RJ-45 cable is not supplied by MicroMod Automation Inc.
✎ Notes You cannot use an RJ-45 patch cable to connect the E-Port unit
directly to a network card in a computer.
The RJ-45 cable is not supplied by MicroMod Automation Inc.