Cisco 2811 ROUTER 2FE 1NME 4HWIC 2PVDM 2AIM IP BASE WITH A/C POWER SUPPLY Specification Guide
7
Troubleshooting Cisco 2800 Series Routers
OL-5789-01
Reading Port and Module LEDs
Reading Port and Module LEDs
The port and module LEDs, located on the front panel of the router on the Cisco 2801 router and on the
rear panel of the router on the Cisco 2811, Cisco 2821, and Cisco 2851 routers, enable you to determine
router performance and operation. For an explanation of these LEDs see
rear panel of the router on the Cisco 2811, Cisco 2821, and Cisco 2851 routers, enable you to determine
router performance and operation. For an explanation of these LEDs see
Table 2
LED Indicators on Cisco 2800 Series Routers
LED Indicator
State
Meaning
Corrective Action
A = ACT
Off
Ethernet interface next to the
LED is not receiving packets.
LED is not receiving packets.
Ethernet not active or not connected. Check
Ethernet connections and make corrections as
necessary.
Ethernet connections and make corrections as
necessary.
Router not configured properly. Check
configuration and make corrections as necessary.
configuration and make corrections as necessary.
Solid or blinking
green
green
Ethernet interface next to the
LED is receiving packets.
LED is receiving packets.
Normal indication. No action required.
F = FDX
Off
Ethernet port next to the LED
is operating in half-duplex
mode.
is operating in half-duplex
mode.
Indication is for information only.
Solid green
Ethernet port next to the LED
is operating in full-duplex
mode.
is operating in full-duplex
mode.
Indication is for information only.
S = Speed
1 blink + pause
(Off (Cisco 2801
router))
(Off (Cisco 2801
router))
Ethernet port next to the LED
is operating at 10 Mbps.
is operating at 10 Mbps.
Indication is for information only.
2 blinks + pause
(On (Cisco 2801
router))
(On (Cisco 2801
router))
Ethernet port next to the LED
is operating at 100 Mbps.
is operating at 100 Mbps.
Indication is for information only.
3 blinks + pause
1
Ethernet port next to the LED
is operating at 1000 Mbps.
is operating at 1000 Mbps.
Indication is for information only.
L = Link
Off
Ethernet link is not
established.
established.
Ethernet not active or not connected. Check
Ethernet connections
Ethernet connections
Router not configured properly. Check
configuration and make corrections as necessary.
configuration and make corrections as necessary.
Green
Ethernet link is established.
Normal indication. No action required.
PVDM0
PVDM1
PVDM2
2
(Packet voice data
modules)
modules)
Off
No PVDM installed in slot
(0, 1, 2).
(0, 1, 2).
Indication is for information only.
Green
PVDM in slot (0, 1, 2) is
initialized.
initialized.
Normal indication. No action required.
Amber
During bootup—PVDM in
slot (0, 1, 2) is detected.
slot (0, 1, 2) is detected.
After bootup—PVDM in slot
(0, 1, 2) failed to initialize.
(0, 1, 2) failed to initialize.
If PVDM fails to initialize, replace the PVDM. To
replace the PVDM, refer to the
replace the PVDM, refer to the
section of the “
” online document.