8/3/2019 Troubleshooting Cisco 1800 Series Routers and LED Indicator

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Reading LEDs

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

LED Indicator State MeaningPossible Causes andCorrective Actions

SYS PWR Off No output is coming from theinternal power supply.

Power is not switched onat the router.

Power is not available fromthe source.

Faulty input power wires orconnections are missing.

Failed power supply in therouter. Toreplace the internal powersupply,call your Cisco technicalsupportrepresentative.

Solidgreen

Router is receiving power,andthe internal power supply isfunctional.

Normal indication. Noaction isrequired.

Blinkinggreen

During bootup, router isbooting up normally.

Normal indication. Noaction isrequired.

After bootup, router isoperating in ROM monitormode.

See the router rebootingandROM monitor informationin theCisco 1800 series softwareconfigurationdocumentation.

SYS ACT Off No packet transfers areoccurring.

Interface card connectionsare notfunctional.

Router is not configuredproperly.Check configuration, and

makecorrections as necessary.

Blinking System is activelytransferringpackets and monitoringinternal activity

Normal indication. Noaction isrequired.

CF(CompactFlashBusy)

Off The CompactFlash memorycard is not being accessed.

Normal indication. Noaction isrequired. It is okay to

8/3/2019 Troubleshooting Cisco 1800 Series Routers and LED Indicator

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Reading LEDs

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

remove theCompactFlash memory

card if theCF LED remains off.

Blinkinggreen

The CompactFlash memorycard is being accessed.

Normal indication. Noaction isrequired.

Caution Do not removetheCompactFlash memorycard while it is beingaccessed.

FDX Off Fast Ethernet port next to theLED is operating inhalf-duplex mode.

Indication is for informationonly.

Solidgreen

Fast Ethernet port next to theLED is operating in full-duplexmode.

Indication is for informationonly.

100 Off Fast Ethernet port next to theLED is operating at 10 Mbps.

Indication is for informationonly.

Solidgreen

Fast Ethernet port next to theLED is operating at 100Mbps.

Indication is for informationonly.

Link Off Fast Ethernet link is notestablished at the Ethernetportnext to the LED.

Ethernet is not active or isnotconnected. Check Ethernetconnections.

Router is not configuredproperly.Check configuration, andmakecorrections as necessary.

Solid

green

FastEthernet link is

establishedat the Ethernet port next totheLED.

Normal indication. No

action isrequired.

AIM

(Advancedintegrationmodule)

Off No AIM is installed. Indication is for informationonly.

Solidgreen

AIM is recognized by therouter and is initialized.

Normal indication. Noaction isrequired.

8/3/2019 Troubleshooting Cisco 1800 Series Routers and LED Indicator

3/3

Reading LEDs

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

System Messages

This section describes system error and recovery messages that may appear when a Cisco 1800 series routeris operated. The Cisco IOS software displays system error and recovery messages on an external deviceconsole terminal screen. (For more information, see the"Connecting to the Console Port" section on page 6-4.)

The terminal should display one of the following prompts:

Router> (indicates the user EXEC command mode)

or

Router#

(indicates the privileged EXEC command mode)

The Cisco IOS software checks the system condition once every 30 seconds. If a condition still exists, the errormessage is displayed again; if the error condition has cleared, a recovery message is displayed.

Table 8-2describes some of the most common system error and recovery messages.

Table 8-2 System Messages

Error Message Explanantion

%ENVMON-3-FAN_OK: Fan functionalnow

The cooling fan within thechassis is working.

%ENVMON-3-FAN_FAIL: Fan is

malfunctioning

The cooling fan within the

chassis is not working.

%CFG-3-CARD_NOT_SUPPORTED: Slot .

The card found is notrecognized or is not supportedin the specified slot.

%CFG-6-UNKNOWN_AIM: AIM module in AIM slot is not supported by this IOS image. Card info:

This Cisco IOS image does nothave the driver code for theAIM discovered in AIM slot.

Troubleshooting Cisco 1800 Series Routers (Modular)

http://www.cisco.com/en/US/docs/routers/access/1800/1841/hardware/installation/guide/18troub.ht

ml#wp1050709

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