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72128A, 72129A Hardened Managed Ethernet Switch

 

This quick installation guide describes how to install and use the 72128A and 72129A hardened Managed 

Gigabit Ethernet Switch. T

his is the switch of choice for harsh environments constrained by space. 

 

Physical Description 

The Port Status LEDs and Power Inputs 

 

 

 

 

LED 

 

 

State

Indication

10/100Base-TX, 100Base-FX 

Steady 

A valid network connection established. 

Link/ACT 

Flashing 

Transmitting or receiving data. 
ACT stands for ACTIVITY. 

Steady 

Communication speed is 100Mbps. 

10/100 

Off 

Communication speed is 10Mbps. 

10/100/1000Base-TX, 1000Base-SX/LX 

Steady 

A valid network connection established. 

Link/ACT 

Flashing 

Transmitting or receiving data. 
ACT stands for ACTIVITY. 

Steady 

Communication speed is 1000Mbps. 

1000 

Off 

Communication speed is 10/100Mbps. 

Power Input Assignment 

 

24VDC 

Power

 

Power 
Ground 

 

Earth Ground 

Terminal 
Block 

 

 

 

Functional Description 

 

Meets NEMA TS1/TS2 Environmental requirements such as temperature, shock, and vibration for 

traffic control equipment. 

 

Meets EN61000-6-2 EMC Generic Standard Immunity for industrial environment. 

 

Manageable via SNMP, Web-based, Telnet, and RS-232 console port. 

 

Support 802.3/802.3u/802.3ab/802.3z/802.3x. Auto-negotiation: 10/100/1000Mbps, full/half-duplex; 

Auto MDI/MDIX. 

 

1000BaseSX/LX: Multi mode or Single mode SC type; WDM Single mode SC type. 

 

Support 8192 MAC addresses. Provides 256K Bytes memory buffer. 

 

Operating voltage and Max. current consumption: 0.625A @ 24VDC. Power consumption: 15W 

Max. 

 

Power Supply: DC Terminal Block power input. 

 

-40

 to 75

 (

-40

 to 167

) operating temperature range. 

Tested for functional operation @ -40

 to 

85

 (

-40

 to 185

). 

 

Supports Din-Rail, Panel, or Rack Mounting installation. 

 

Console Configuration

 

 

Connect to the switch console: 

Connect the DB9 null-modem or cross over cable to the RS-232 serial port of the device and the 

RS-232 serial port of the terminal or computer running the terminal emulation application. Direct 

access to the administration console is achieved by directly connecting a terminal or a PC equipped 

with a terminal-emulation program (such as HyperTerminal) to the switch console port. 

 

Configuration settings of the terminal-emulation program: 

Baud rate: 115,200bps 

Data bits: 8 

Parity: none 

Stop bit: 1 

Flow control: none. 

 

Press the “Enter” key. The Command Line Interface (CLI) screen should appear as below: 

 

Logon to Exec Mode (View Mode): 

At the “switch_a login:

 prompt just type in “root” and press <Enter> to logon to Exec Mode (or View 

Mode). And the “switch_a>” prompt will show on the screen. 

 

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