Fault Identification: Cisco switch status light full solution

This article describes how switch status lights are displayed to identify different problems and solve them. The following article provides a detailed introduction, which will be of great help to you.

The front panel of the switch has several indicators to monitor system activity and performance. These LEDs are called LEDs ). The indicators on the front panel include:

· System indicator lights

· Remote power supply indicator

· Port mode indicator light

· Port Status Indicator

1: System indicator

Check whether the system is powered on and working properly.

Indicator light color system status

Power off system not powered

The green system runs normally.

The amber system is powered on but not running properly.

2: Remote Power Supply rps) Indicator

The indicator indicates whether the switch has a remote power supply. The RPS indicator indicates the RPS status of the switch.

LED color RPS status

Disable RPS or not install

Continuous green RPS connected and available

Flashing green RPS is supporting stack) Another switch in

Continued Amber RPS connected but abnormal

Flashing amber switch internal power failure, using RPS

: Port indicator, which is important for exams)

Port mode indicator light shows the current status of the mode button. Various modes are used to determine how to explain the port status LEDs. If you want to select or modify the port Mode, press the Mode button until the Mode LED indicates that the Mode is in the required Mode. The port status LEDs can represent multiple meanings, depending on the current value of the Mode LEDs.

The Mode button has three statuses:

· STAT status, states)

· UTL Utilization, Utilization)

· FDUP full duplex, full duplex)

If the switch status light is blinking orange, it usually indicates that it is on a port. The module or switch has hardware faults. If the port or module status is abnormal, the status light is orange.

4: Port Status Indicator

Mode LED port mode description

STAT port status displays port status. This is the default mode.

VTIL switch utilization shows the current port times the bandwidth used by the switch

DUPLX port duplex mode available is full or half duplex

SPEED port Running SPEED

To select or change the port Mode, press the Mode button until the required Mode is selected.

Mode LED color description

STAT

Close the port status and disable the link-less

Continuous green link normal operation

Flashing green to send or receive data

The green/amber link is in the forwarding status

Continuous Amber port is currently forwarded

UTIL

Switch utilization green inter-board Utilization

Maximum utilization of Amber backplane

The current bandwidth usage of the green and amber switches reaches 50% of the total bandwidth or higher as the bandwidth usage drops green, the LED turns amber

Duplx off half duplex

Port duplex mode green full duplex

SPEED

Port Speed close port running in 10 mbit/s

Green 100 mbit/s

The above figure shows the STAT status! I marked it in red to indicate that the exam is currently possible! Some friends have met!

Last part

Check the port LEDs in The POST Phase of the switch.

After the power supply is connected, the switch starts a series of tests called power-on self-detection to detect whether the switch works normally.

The system indicator indicates whether the POST is successful or not. If the switch is powered on, if the system indicator is off, it indicates that POST is in progress.

If the light is green, the POST is successful! Congratulations!

If it is Amber, the POST operation fails! Haha!

POST is a fatal error! Post all failed. Switch still works P!

The port status indicator will also change during the post process. When the switch discovers the network topology and searches for the loop, the port status indicator turns to Amber for 30 seconds! If the port status indicator turns green, a port of the vswitch has been successfully connected to the target! The target is, for example, a computer!

If the port indicator is not on, the switch is sure that the device is not connected to the port!