Cisco Systems CISCO1841-HSEC/K9-RF manual Reading LEDs, LED Indicator, State, Meaning

Chapter 8 Troubleshooting Cisco 1800 Series Routers (Modular)

Reading LEDs

–There may be a problem with the card or cable. See the “Cisco One-Year Limited Hardware Warranty Terms” and the “Obtaining Documentation and Submitting a Service Request” sections of the “Introduction to Cisco 1800 Series Routers (Modular) Hardware Documentation” document for warranty and customer service contact information.

Reading LEDs

The LEDs on the router enable you to determine router performance and operation. The System Power (SYS PWR) LED and the System Activity (SYS ACT) LED are on the front panel; all the other LEDs are on the back panel.

Table 8-1 LED Indicators on Cisco 1800 Series Routers

LED Indicator

State

Meaning

Possible Causes and Corrective Actions

SYS PWR	Off	No output is coming from the	Power is not switched on at the
		internal power supply.	router.
			Power is not available from the
			source.
			Faulty input power wires or
			connections are missing.
			Failed power supply in the router. To
			replace the internal power supply,
			call your Cisco technical support
			representative.
	Solid green	Router is receiving power, and	Normal indication. No action is
		the internal power supply is	required.
		functional.
	Blinking	During bootup, router is	Normal indication. No action is
	green	booting up normally.	required.
		After bootup, router is	See the router rebooting and
		operating in ROM monitor	ROM monitor information in the
		mode.	Cisco 1800 series software
			configuration documentation.
SYS ACT	Off	No packet transfers are	Interface card connections are not
		occurring.	functional.
			Router is not configured properly.
			Check configuration, and make
			corrections as necessary.
	Blinking	System is actively transferring	Normal indication. No action is
		packets and monitoring	required.
		internal activity

Cisco 1800 Series Routers (Modular) Hardware Installation Guide

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