Avocent 210128 User Manual

 Chapter 2: Hardware Installation and Network Configuration        9

The Ethernet port supports 10/100 auto detect (speed and duplex) connections. The LAN connector 
accepts 10BaseT or 100BaseT LAN interface cable. On an ESP-2 MI or ESP-4 MI hub, the LAN 
connector is on the front of the hub. On an ESP-8 MI or ESP-16 MI hub, the LAN connector is on 
the back of the hub. A CAT 5 cable is required for 100BaseT operation.

Table 2.5 lists the pin assignments for the RJ-45 shielded Ethernet connector.

The network interface speed may be configured with the following values.

Auto-negotiate
10 Mb/second half or full duplex

100 Mb/second half or full duplex

10 Mb/second half duplex

100 Mb/second half duplex

10 Mb/second full duplex

100 Mb/second full duplex

By default, auto-negotiate and all settings are enabled. The setting that will be used is determined 
by which settings are available and also by priority. For a standard CAT 5 twisted pair cable, the 
priority is (from highest to lowest):

100 Mb/second, full duplex
100 Mb/second, half duplex
10 Mb/second, full duplex
10 Mb/second, half duplex

The network interface speed may be specified using any of the available tools.

•

Web interface - see Displaying or Changing Network Configuration Values on page 32.

•

Configuration utility - see Displaying or Changing Network Configuration Values on page 45.

•

Configuration file - see Network Command on page 59.

1

Transmit Data +

2

Transmit Data -

3

Receive  Data  +

4

*

5

*

6

Receive  Data  -

7

*

8

*

* These pins are usually connected in a standard Ethernet CAT 5 cable. Special termination for these signals 
is in the interface to eliminate any problems if they are connected.