Booting Node Boards; Board Power-On Sequence - Sun Microsystems Netra CT 820 Administration Manual

Hide thumbs Also See for Netra CT 820:

Table of Contents

Booting Node Boards

Node boards can boot from a local disk or over the network.

When you power on the Netra CT 820 system by pressing the power switch on the

rear of the system to the On (|) position, the boards power on in this sequence:

1. The two distributed management cards are powered on; the top card in slot 1A is

designated as the active distributed management card, and the bottom card in slot

1B is designated as the standby distributed management card. Once the cards

have booted and are ready for use, the "Ready" LED is solid green on the active

card and blinking green on the standby card.

2. The active distributed management card powers on the switching fabric boards in

slots 2 and 21. While the switching fabric boards are powering on, the blue LED

state is solid; once the boards have booted and are ready for use, the blue LED is

off.

3. The active distributed management card looks at the Boot_Mask field in the

midplane FRU ID for boot servers.

a. If one or more boot servers are designated in the Boot_Mask field, the active

distributed management card powers on the boot servers first; once the boards

have booted and are ready for use, the active distributed management card

powers on the rest of the node boards together; these boards boot from the

boot servers. The method of booting depends first on the value in the

Boot_Devices field in the midplane FRU ID or secondly on the value in the

OpenBoot PROM NVRAM boot_device configuration variable. After a board

has booted and is ready for use, "Ready" LED is solid green and the blue LED

is off.

b. If no boot server is designated in the Boot_Mask field, the active distributed

management card powers on all the node slots together. Once the node boards

are powered on, the method of booting depends first on the value in the

Boot_Devices field in the midplane FRU ID or secondly on the value in the

OpenBoot PROM NVRAM boot_device configuration variable. After a board

has booted and is ready for use, the "Ready" LED is solid green and the blue

LED is off.

A midplane FRU ID fault is a system fault, and no boards can be powered on.

Chapter 3 Administering Your System

Table of Contents