Overview of the Cisco 12008
Cisco 12008 Gigabit Switch Router Installation and Configuration Guide
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—Two RJ-45 or MII Ethernet port select LEDs: these LEDs, when on, identify which
one of the two Ethernet connections you selected. When the RJ-45 port is selected,
its LED is on and the MII LED is off. When the MII port is selected, its LED is on
and the RJ-45 LED is off.
•The alphanumeric displays are organized as two rows of four characters each. The
displays’ content is controlled by the MBus module software. The displays’ content is
controlled by the GRP’s MBus module software. Both rows of the display are powered
by the MBus module.
These alphanumeric displays provide information about the following:
—System status messages that are displayed during the boot process
—System status messages that are displayed after the boot process is complete
During the boot process, the alphanumeric LED displays are controlled directly by the
MBus. After the boot process, they are controlled by the Cisco IOS software (via the
MBus), and display messages designated by the Cisco IOS software.
The following levels of system operation are displayed:
—Status of the GRP
—System error messages
—User-defined status/error messages
Note A complete, descriptive list of all system and error messages is located in the Cisco
IOS System Error Messages publications.

Soft Reset Switch

A soft reset switch is provided on the GRP faceplate to enable you to reset the software
running on the R5000 RISC processor of the GRP. You access this switch through a small
aperture in the GRP faceplate. To activate the switch, you can press a ball-point pen or
similar pointed instrument into the opening.