Cisco Systems 78-16019-02 manual About Fan Failure Shutdown, Configuring Fan Failure Shutdown

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Chapter 3 Initial Configuration

About Fan Failure Shutdown

About Fan Failure Shutdown

The Cisco ONS 15530 fan assembly is located at the bottom of the chassis and contains six individual fans and a fan controller board. The controller board monitors the status of each fan and reports the status to the CPU switch modules.

If a single fan fails, a minor alarm is reported to the CPU switch module. However, the chassis will never reach a critical high temperature when only one fan fails.

If two or more fans fail, a major alarm is reported to the CPU switch module.

If all six fans in the fan tray fail, the chassis will reach critical temperature after 4 minutes.

To prevent damage to the cards and modules in the shelf when two or more fans fail, you can configure the system to automatically reset the following cards:

•ESCON aggregation cards

•8-port FC/GE aggregations cards

•2.5-Gbps ITU trunk cards

•10-Gbps ITU trunk cards

•Transponder line cards

In addition, the ITU lasers on the transponder line cards are powered off.

To recover from fan failure shutdown, you must power-cycle the shelf.

Caution Do not save the startup configuration file after the line cards shutdown. This action would result in losing the previous startup configuration.

Caution The fan failure shutdown feature disrupts traffic on the shelf when two or more fans fail.

Configuring Fan Failure Shutdown

To configure the system to automatically shut down when two or more fans fail, use the following global configuration command:

Command	Purpose

environment-monitor shutdown fan	Enables fan tray failure shutdown.

Note The system will start powering off or resetting the transponder modules about 2 minutes after detecting that two or more fans have failed.

Example

The following example shows how to enable fan tray failure shutdown:

Switch(config)# environment-monitor shutdown fan

	Cisco ONS 15530 Configuration Guide and Command Reference
3-30	78-16019-02, Cisco IOS Release 12.2(18)SV2

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Contents Initial Configuration About the CPU Switch ModuleStarting Up the Cisco ONS Using the Console Ports, NME Ports, and Auxiliary PortsYou can now begin configuring the CPU switch module You see the following user Exec promptEnable Secret Password About PasswordsEnable Password Modem SupportConfiguring IP Access on the NME Interface Command PurposeDisplaying the NME Interface Configuration Switch# configure terminal Configuring the Host NameDisplaying the Operating Configurations Switchconfig# hostname name Specifies a system nameSwitch# configure terminal Switchconfig# hostname ONS15530 ONS15530# copy systemrunning-config nvramstartup-configAbout NTP Command Configuring NTPDisplaying the NTP Configuration Example PurposeConfiguring Authentication Configuring Security FeaturesConfiguring AAA Configuring AuthorizationConfiguring Kerberos Configuring RadiusConfiguring TACACS+ Configuring Traffic Filters and FirewallsConfiguring Passwords and Privileges About CPU Switch Module Redundancy CPU Switch Module State Transition Diagram State DescriptionRedundant Operation Requirements Configuring CPU Switch Module Redundancy Forcing a Switchover from Privileged Exec ModeRedundancy switch-activity force Forcing a Switchover from ROM Monitor Mode SwitchoverSwitchconfig# config-register Configuring AutobootDisplaying the Autoboot Configuration Bootflash filenameSynchronizing the Configurations Synchronizing Configurations ManuallyFollowing example shows the contents of the boot variable Switchconfig-red# no auto-sync startup-config Filename When SynchronizedSwitchconfig-red# no auto-sync running-config Enabling and Disabling Automatic SynchronizationShow redundancy summary Configuring Maintenance ModeShow redundancy running-config-file Show redundancy capabilitySwitch# show redundancy summary ExamplesFollowing example shows the CPU switch module capabilities Switch# show redundancy capabilityReloading the CPU Switch Modules Sby-Switch#show redundancy running-config-fileSwitch# redundancy reload peer Enable Switchconfig-red# standby privilege-modeEnables access to privileged Exec mode from Standby CPU switch module CLI. The default stateAbout the Software Configuration Register DownSoftware Configuration Register Settings 4describes each of the software configuration register bitsBit Number Hexadecimal Description Boot Field Values Bit Address nethostBit Baud Rate 7describes the values for the boot field Default System Boot BehaviorBoot Command Boot Field Value DescriptionSwitch# show version Changing the Software Configuration RegisterVerify the Configuration Register Value Displays the current configuration register valueConfiguring Fan Failure Shutdown Switchconfig# environment-monitor shutdown fanAbout Fan Failure Shutdown Displaying the Fan Tray Failure Shutdown Configuration Switch# show environment78-16019-02, Cisco IOS Release 12.218SV2