ASMi-31Installation and Operation ManualAppendix A. Ethernet Interface

LAN Installation

For 10BaseT installation, either a straight cable or a cross-cable may be

 

required. Use a cross-cable when connecting to a port that does not

 

implement the crossover function internally. Otherwise, use a straight cable.

Note

Switch Settings

Hubs usually implement the crossover function internally while NICs and other devices do not.

Set switches according to Table A-2.

Table A-2 DIP Switches Settings

Switch

Name

Description

Default

Number

 

 

Setting

 

 

 

 

1

SQ/FD

ON: Ethernet full-duplex mode

OFF

 

 

OFF: Ethernet half-duplex mode

 

 

 

 

 

2

CMP

ON: Strips padding bits inserted in 64-byte frame

ON

 

 

OFF: Transmits frames over WAN as is

 

 

 

 

 

3

FIL

ON: Passes only frames destined for another LAN

ON

 

 

OFF: Disables LAN filter; passes all frames transparently

 

 

 

 

 

4

(nc)

 

OFF

 

 

 

 

Note

LED Indicators

The SQ/FD switch is not used in the Ethernet bridge with the BNC connector option.

Table A-3lists the IR-ETH LED indicators and describes their functions.

Table A-3 IR-ETH Bridge LED Indicators

LED Name

Description

Location

Color

 

 

 

 

LINK

ON indicates good link integrity (available only in

Panel

Green

 

the 10BaseT version)

 

 

 

 

 

 

COLL

ON indicates collision on the attached Ethernet

Panel

Yellow

 

segment

 

 

 

 

 

 

RX

ON when data is received from the Ethernet

Panel

Yellow

 

attached segment

 

 

 

 

 

 

TX

ON when data is transmitted from the modem to

Panel

Yellow

 

the Ethernet segment

 

 

 

 

 

 

ERR D4

Bridge buffer overrun

On board

Red

 

 

 

 

Installation and Operation

A-5

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RAD Data comm ASMi-31 operation manual LAN Installation, Switch Settings, LED Indicators, Table A-2 DIP Switches Settings