Operating L2 Controller; L2 Mode - Silicon Graphics Origin 3900 User Manual

8: System Control

Operating L2 Controller

L2 Mode

132
The L2 controller hardware includes L2 controller firmware. To access the L2 controller
firmware, you must connect a console such as the SGIconsole to the L2 controller. For
instructions on how to connect a console to the L2 controller, see "Connecting System
Console" on page 4.
The L2 firmware is always running as long as power is supplied to the L2 controller. If
you connect a system console to the L2 controller's console port, the L2 prompt appears.
The L2 firmware operates in one of three modes, each of which is discussed in the
sections that follow.
• L2 mode. The L2 prompt is visible and all input is directed to the L2 command
processor.
• Console mode. Output from the system is visible and all input is directed to the
system.
• L1 mode. The prompt from a single L1 controller is visible, and all input is directed
to that L1 command processor.
After the connection to the L2 controller is established, the following prompt appears,
indicating that the L2 controller is ready to accept commands:
L2>
Common operations are discussed in the following sections:
• "Viewing System Configuration" on page 133
• "Targeting Commands" on page 134
• "Viewing Information, Warnings, and Error Messages" on page 137
• "Powering On, Powering Off, and Resetting System" on page 137
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