Cisco 12404 Installation And Configuration Manual page 34

Route Processors
GRP LEDs
Cisco 12404 Internet Router Installation and Configuration Guide
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The light emitting diodes (LEDs) located on the GRP show the status of the GRP,
system error messages, or when reprogrammed, the GRP LEDs show the
user-defined status/error messages.
The two types of system status LEDs used on the GRP are:
2 PCMCIA LEDs go on when the slot is accessed.
•
4 RJ-45 Ethernet port activity LEDs (labeled LINK, COLL, TX and RX)—
•
these LEDs are used in conjunction with the RJ-45 Ethernet connector. When
on, the 4 RJ-45 LEDs indicate:
Link activity (LINK)
–
– Collision detection (COLL)
Data transmission (TX)
–
Data reception (RX)
–
These LEDs are disabled when the media-independent interface
Note
(MII) Ethernet port is in use.
2 Ethernet port selection LEDs (labeled MII and RJ-45)—these LEDs are
•
used in conjunction with both the RJ-45 and MII Ethernet ports. When on,
they identify your selection of either the RJ-45 Ethernet port or the MII
Ethernet port.
Alphanumeric displays are organized as two rows of 4 characters each. The
content of the display is controlled by the MBus module software. The
alphanumeric displays provide information about the system status during the
boot process, where the alphanumeric LED displays are controlled directly by the
MBus.
After the boot process, the LEDs are controlled by Cisco IOS software through
the MBus, and messages are designated by Cisco IOS software.
Chapter 1 Product Overview
OL-11636-01