Console Network Switch Troubleshooting

1 Overview

The follow information will assist in confirming if the CNS is experiencing a hardware fault. Although the following is not a complete set of diagnostics, it should be sufficient in determining if the CNS is suffering from hardware issues at the prescribe Field Replaceable Unit (FRU) level.

danger

ELECTROCUTION HAZARD
THOUGH THERE IS NO REASON TO OPEN THE CNS, CARE MUST BE TAKEN WHEN WORKING WITH THE CNS AND INSIDE THE GOC6 CONSOLE.
USE PROPER LOCKOUT / TAGOUT PROCEDURES BEFORE REPLACING THE COMPONENTS.

2 CNS General Troubleshooting

Before proceeding with the rest of this procedure, use the following checklist to find possible solutions for CNS problems.

2.1 Power Check

Is the CNS powered on?
Is the Power LED illuminated?
Has Circuit Breaker #2 (CB2) tripped on Power Distribution Box?
Is the CNS connected to the proper electrical outlet on the Power Distribution Box?

2.2 Cable Check

Are all Ethernet Cables properly inserted?

3 CNS LEDs

The CNS has LEDs mounted on its front panel to give operational status of the Switch and Ethernet ports.

Table 1. CNS (526379) LED Indicators LED Status
Location	LED Indicative	Color	Status	Description
Per Device	Power	Green	Solid Light	Power is ON
	Power	Green	Light Off	Power is OFF
	CPU	Green	Blinking	When the CPU is working, the CPU LED will blink
	CPU	Green	On/Off	The CPU is not working
LED per 10/100/1000 Mbps Port	Link / Act	Green	Solid Light	When there is a secure connection (or link) to an Ethernet device in any of the ports
			Blinking	When there is reception or transmission (or activity) of data in any port
			Light Off	No link detected
	1000 Mbps	Green	Solid Light	When there is a secure connection (or link) to 1000Mbps device in a port
	100 Mbps	Green	Solid Light	When there is a secure connection (or link) to 100Mbps device in any of the ports
	Both 100/1000 Mbps	OFF	Light Off	Possible link at 10M or No Connection

Table 2. CNS (526379–2) LED Indicators LED Status
Location	LED Indicative	Color	Status	Description
Per Device	Power	Green	Solid Light	Power is ON
Per Device	Power	Green	Light Off	Power is Off
LED per 10/100/1000 Mbps Port	Link / Act	Amber	Solid Light	When there is a secure connection (or link) to 10 or 100 Mbps device in any of the ports
		Amber	Flashing Light	When there is reception or transmission (or activity) of data in any port
		Green	Solid Light	When there is a secure connection (or link) to 1000 Mbps device in any of the ports
		Green	Flashing Light	When there is reception or transmission (or activity) of data in any port
		No	Light Off	When there is a No Connection (or link) to device in any of the ports

4 CNS RESET SWITCH

notice

USE OF THE RESET BUTTON WILL CAUSE ALL CONFIGURATION SETTINGS TO BE SET BACK TO FACTORY DEFAULTS.

The CNS has a Reset button on the back panel (of 526379) or front panel (of 526379–2) of the Switch. The Reset Button restores all configuration settings to factory defaults. Use caution. The DHCP Server on the Host Computer may no longer recognize other components on the console network. Reboot of the console and running system configuration (“reconfig”) may be required.