Cisco Systems 78-16019-02 Boot Field Values

3-27

Cisco ONS 15530 Configuration Guide and Command Reference

78-16019-02, Cisco IOS Release 12.2(18)SV2

Chapter3 Initial Configuration About the Software Configuration Register

Bit 12 and bit 11 in the configuration register determine the data transmission rate of the console

terminal. Table3-6 shows the bit settings for the four available rates. The factory-set default data

transmission rate is 9600.

Bit 13 determines the system response to a bootload failure. Setting bit 13 (the factory default) causes

the system to load operating software from bootflashmemory after five unsuccessful attempts to load a

bootfile from the Flash memory device in slot 0. Clearing bit 13 causes the server to continue attempting

to load a boot file from bootflash indefinitely.

Boot Field Values

The lowest four bits of the configuration register (bits 3, 2, 1, and 0) form the boot field. The order in

which the system looks for system bootstrap information depends on the boot field setting in the

configuration register.

Table3-5 Register Settings for Broadcast Address

Bit 14 Bit 10 Address (<net><host>)

0 0 <ones><ones>

0 1 <ones><zeros>

1 0 <net><ones>

1 1 <net><zeros>

Table3-6 Settings for Console Terminal Transmission Rate

Bit 12 Bit 11 Baud Rate

0 0 9600

0 1 4800

1 0 1200

1 1 2400

Contents

Main CHAPTER Initial Configuration About the CPU Switch Module Starting Up the Cisco ONS 15530 Using the Console Ports, NME Ports, and Auxiliary Ports Modem Support About Passwords Enable Password Enable Secret Password Configuring IP Access on the NME Interface Displaying the NME Interface Configuration Displaying the Operating Configurations Configuring the Host Name About NTP Configuring NTP Displaying the NTP Configuration Configuring Security Features Configuring AAA Configuring Authentication Configuring Authorization Configuring Accounting Configuring Kerberos Configuring RADIUS Configuring TACACS+ Configuring Traffic Filters and Firewalls Configuring Passwords and Privileges About CPU Switch Module Redundancy Page Redundant Operation Requirements Conditions Causing a Switchover from the Active CPU Switch Module Configuring CPU Switch Module Redundancy Forcing a Switchover from Privileged EXEC Mode Forcing a Switchover from ROM Monitor Mode Configuring Autoboot Displaying the Autoboot Configuration Synchronizing the Configurations Synchronizing Configurations Manually Enabling and Disabling Automatic Synchronization Configuring Maintenance Mode Displaying the CPU Switch Module Redundancy Configuration and Status Examples The following example shows the CPU switch module redundancy configuration and status: The following example shows the CPU switch module capabilities: Reloading the CPU Switch Modules Example The following example shows how to reload the standby CPU switch module: Configuring Privileged EXEC Mode Access on the Standby CPU Switch Module Displaying the Standby CPU Switch Module Privileged EXEC Mode Status About the Software Configuration Register Software Configuration Register Settings Boot Field Values Default System Boot Behavior Boot Command Changing the Software Configuration Register Verify the Configuration Register Value About Fan Failure Shutdown Configuring Fan Failure Shutdown Displaying the Fan Tray Failure Shutdown Configuration