3Com 2900 manual Led

Page 18

Port

Ethernet port status

Switch model

mode

Meaning

LED

LED

Solid green

The port operates at a rate of 1000

Mbps

Fast blinking green

Data is transmitted or received at a rate

of 1000 Mbps

3Com Baseline

The port operates at a rate of 10/100

Switch

—

Solid yellow

Mbps

2952-SFP Plus

Fast blinking yellow

Data is transmitted or received at a rate

of 10/100 Mbps

Off

The port is not up or the POST has

failed

On

The port operates at a rate of 1000

Mbps

Green

Fast blinking

Data is transmitted or received at a rate

of 1000 Mbps

Off

The port is not up or does not operate at

1000 Mbps

Solid

green

On

The port operates at a rate of 10/100

(rate

Mbps

mode)

Fast blinking

Data is transmitted or received at a rate

of 10/100 Mbps

Yellow

Blinking (3

The POST has failed

3Com Baseline

Hz)

Switch

Off

The port is not up or does not operate at

2928-PWR Plus

10/100 Mbps.

3Com Baseline

On

PoE power supply is normal.

Switch

2928-HPWR

Power consumption of the device

Plus

Blinking at 3

attached to the port exceeds the upper

Green

limit of the power supply consumption of

Hz

the port, or the available power of the

switch is not enough for power supply of

Blinking

the port.

green

Off

No PoE power supply is provided on the

(PoE

port.

mode)

On

The device connected to the interface is

not a PD device or a PoE failure occurs

Yellow

Blinking (3

The POST has failed

Hz)

Off

No PoE power supply is provided on the

port or PoE power supply is normal.

1-12

Image 18

Contents

3Com Baseline Switch 2900 Family Environmental Statement About This Manual OrganizationConventions Related Documentation Obtaining DocumentationManual Description Table of Contents Page Product Overview IntroductionPage Front Panel 3Com Baseline Switch 2920-SFP PlusPower Supply System Rear Panel3Com Baseline Switch 2928-SFP Plus 3Com Baseline Switch 2952-SFP Plus 3Com Baseline Switch 2928-PWR Plus 3Com Baseline Switch 2928-HPWR Plus Console Port SpecificationPorts 10/100/1000Base-T Ethernet Port Fiber Transceiver Central Connector Type 1000Base-X SFP Interface Max Transmis Sion DistancePower LED LEDsRPS Status LED Port Mode LED Port Ethernet port status Switch model Mode Meaning10/100/1000Base-T Auto-Sensing Ethernet Port Status LED LED 1000Base-X SFP Interface Status LED Installation Site Installation PreparationsSafety Precautions Temperature/HumidityDust concentration limit in the equipment room Laser SafetyElectromagnetic Susceptibility Gas Maximum concentration mg/mInstallation Tools Installing a Switch Introduction to Mounting BracketsModel Mounting bracket Description Attaching the Mounting Brackets to a Switch Model Mounting position Description See -6 , FigureMounting the Switch to a Rack Page Mounting the Switch on a Workbench Connecting the Pgnd CableWhen a Grounding Strip is Available Page Where a Grounding Conductor Can be Buried Other Installation SitesWhen the switch is AC-powered Connecting the Power Cord Connecting an AC Power CordVerifying the Installation Connecting an RPS DC Power CordPage Connecting the Console Cable Initial Power-OnSetting Up the Configuration Environment RJ-45 Signal Direction DB-9Setting Terminal Parameters Connection Procedure4Set the serial port used by the HyperTerminal connection 6HyperTerminal window Booting the Switch Checking Before Power-OnPowering On the Switch Describes the fields above 2Description on the fields Changing the Boot Mode Enter 9. The system prompts you to change the startup modeEnter Y. The system displays the following information User interface aux0 is available Press Enter to get started Approaches for Loading Application and Configuration Files Loading Files Through the Boot ROM MenuLoading Software Introduction to the Boot ROM Menu Loading Files Using Xmodem Through Console Port Loading a Boot ROM fileIntroduction to Xmodem Task Remarks Change the rate of the serial port on the terminalDescription Page 2Properties dialog box 5Transfer menu Restoring the download rate to the default Page Loading Files Using Tftp Through Ethernet Port Introductin to TftpLoad File Name Loading an application file Loading Files Using FTP Through Ethernet Port Introduction to FTPParameters are described in Table 5Description of the FTP parameters Loading an application file User Password Loss Maintenance and TroubleshootingPassword Loss Boot ROM Password LossWith RPS power input Power Supply FailureWith AC power input With both AC and RPS power suppliesConfiguration Terminal Failure Troubleshooting when there is no terminal displayTroubleshooting when the terminal display is illegible