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Cisco 1800 Series Routers (Modular) Hardware Installation Guide
OL-5876-03
Chapter 8 Troubleshooting Cisco 1800 Series Routers (Modular)
System Messages
System Messages
This section describes system error and recovery messages that may appear when a Cisco 1800 series
router is operated. The Cisco IOS software displays system error and recovery messages on an external
device console terminal screen. (For more information, see the
“Connecting to the Console Port” section
on page 6-4
.)
CF
(CompactFlash
Busy)
Off
The CompactFlash memory
card is not being accessed.
Normal indication. No action is
required. It is okay to remove the
CompactFlash memory card if the
CF LED remains off.
Blinking
green
The CompactFlash memory
card is being accessed.
Normal indication. No action is
required.
Caution
Do not remove the
CompactFlash memory
card while it is being
accessed.
FDX
Off
Fast Ethernet port next to the
LED is operating in
half-duplex mode.
Indication is for information only.
Solid green
Fast Ethernet port next to the
LED is operating in full-duplex
mode.
Indication is for information only.
100
Off
Fast Ethernet port next to the
LED is operating at 10 Mbps.
Indication is for information only.
Solid green
Fast Ethernet port next to the
LED is operating at 100 Mbps.
Indication is for information only.
Link
Off
Fast Ethernet link is not
established at the Ethernet port
next to the LED.
Ethernet is not active or is not
connected. Check Ethernet
connections.
Router is not configured properly.
Check configuration, and make
corrections as necessary.
Solid green
FastEthernet link is established
at the Ethernet port next to the
LED.
Normal indication. No action is
required.
AIM
(Advanced
integration
module)
Off
No AIM is installed.
Indication is for information only.
Solid green
AIM is recognized by the
router and is initialized.
Normal indication. No action is
required.
Table 8-1
LED Indicators on Cisco 1800 Series Routers (continued)
LED Indicator
State
Meaning
Possible Causes and Corrective
Actions
