Cisco Nexus 7000 Series Service manual

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Cisco Nexus 7000 Series NX-OS
High Availability Command
Reference, Release 5.x
October 2010
Text Part Number: OL-23374-01

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THE SPECIFICATIONS AND INFORMATION REGARDING THE PRODUCTS IN THIS MANUAL ARE SUBJECT TO CHANGE WITHOUT NOTICE. ALL
STATEMENTS, INFORMATION, AND RECOMMENDATIONS IN THIS MANUAL ARE BELIEVED TO BE ACCURATE BUT ARE PRESENTED WITHOUT
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THE SOFTWARE LICENSE AND LIMITED WARRANTY FOR THE ACCOMPANYING PRODUCT ARE SET FORTH IN THE INFORMATION PACKET THAT
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Cisco Nexus 7000 Series NX-OS High Availability Command Reference, Release 5.x 
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CONTENTS
New and Changed Information v
Preface vii
Audience vii
Organization vii
Document Conventions vii
Related Documentation viii
Obtaining Documentation and Submitting a Service Request ix
Cisco Nexus 7000 Series NX-OS High Availability Commands HACR-1
clear bootvar log HACR-2
clear cores HACR-3
clear xbar-driver HACR-4
out-of-service HACR-5
power redundancy-mode HACR-6
reload module HACR-8
show boot HACR-9
show cores HACR-11
show system cores HACR-12
show system redundancy HACR-13
show system standby manual-boot HACR-15
system cores HACR-16
system hap-reset HACR-18
system no hap-reset HACR-19
system standby manual-boot HACR-20
system switchover HACR-21
system test-preupgrade running-ver HACR-22

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Contents
iv
Cisco Nexus 7000 Series NX-OS High Availability Command Reference, Release 5.x
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v
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New and Changed Information
This document provides release-specific information for each new and changed feature in Cisco Nexus
7000 Series NX-OS High Availability Command Reference, Release 5.x.
Table 1-1 summarizes the new and changed features as described in the Cisco Nexus 7000 Series NX-OS
High Availability Command Reference, Release 5.x, and tells you where they are documented. The table
includes a brief description of each new feature and the release in which the change occurred.
Ta b l e 1-1 New and Changed Information
Feature Description
Changed in
Release Where Documented
There are no changes since
Release 4.2(1).
— — —

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New and Changed Information

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vii
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Preface
This preface describes the audience, organization, and conventions of the Cisco Nexus 7000 Series
NX-OS High Availability Command Reference, Release 5.x. It also provides information on how to
obtain related documentation.
This chapter includes the following sections:
• Audience, page vii
• Organization, page vii
• Document Conventions, page vii
• Related Documentation, page viii
• Obtaining Documentation and Submitting a Service Request, page ix
Audience
This publication is for experienced users who configure and maintain Cisco NX-OS devices.
Organization
This reference is organized as follows:
Document Conventions
Command descriptions use these conventions:
Chapter and Title Description
Cisco Nexus 7000 Series NX-OS High
Availability Commands
Describes the Cisco NX-OS high availability
commands.
Convention Description
boldface font Commands and keywords are in boldface.
italic font Arguments for which you supply values are in italics.

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Preface
Screen examples use these conventions:
This document uses the following conventions:
Note Means reader take note. Notes contain helpful suggestions or references to material not covered in the
manual.
Caution Means reader be careful. In this situation, you might do something that could result in equipment
damage or loss of data.
Tip Means the following information will help you solve a problem.
Related Documentation
Cisco NX-OS includes the following documents:
Release Notes
Cisco Nexus 7000 Series NX-OS Release Notes, Release 5.x
NX-OS Configuration Guides
Cisco Nexus 7000 Series NX-OS Getting Started with Virtual Device Contexts, Release 5.x
Cisco Nexus 7000 Series OTV Quick Start Guide
Cisco Nexus 7000 Series NX-OS Fundamentals Configuration Guide, Release 5.x
Cisco Nexus 7000 Series NX-OS Interfaces Configuration Guide, Release 5.x
Cisco Nexus 7000 Series NX-OS Layer 2 Switching Configuration Guide, Release 5.x
[ ] Elements in square brackets are optional.
[ x | y | z ] Optional alternative keywords are grouped in brackets and separated by vertical
bars.
string A nonquoted set of characters. Do not use quotation marks around the string or
the string will include the quotation marks.
screen font Terminal sessions and information that the switch displays are in screen font.
boldface screen
font
Information you must enter is in boldface screen font.
italic screen font Arguments for which you supply values are in italic screen font.
< > Nonprinting characters, such as passwords, are in angle brackets.
[ ] Default responses to system prompts are in square brackets.
!, # An exclamation point (!) or a pound sign (#) at the beginning of a line of code
indicates a comment line.

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Preface
Obtaining Documentation and Submitting a Service Request
Cisco Nexus 7000 Series NX-OS Quality of Service Configuration Guide, Release 5.x
Cisco Nexus 7000 Series NX-OS Unicast Routing Configuration Guide, Release 5.x
Cisco Nexus 7000 Series NX-OS Multicast Routing Configuration Guide, Release 5.x
Cisco Nexus 7000 Series NX-OS Security Configuration Guide, Release 5.x
Cisco Nexus 7000 Series NX-OS OTV Configuration Guide, Release 5.x
Cisco Nexus 7000 Series NX-OS Virtual Device Context Configuration Guide, Release 5.x
Cisco Nexus 7000 Series NX-OS FabricPath Configuration Guide, Release 5.x
Cisco Nexus 7000 Series NX-OS Software Upgrade and Downgrade Guide, Release 5.x
Cisco NX-OS Licensing Guide
Cisco Nexus 7000 Series NX-OS High Availability and Redundancy Guide, Release 5.x
Cisco Nexus 7000 Series NX-OS System Management Configuration Guide, Release 5.x
Cisco NX-OS XML Management Interface User Guide, Release 5.x
Cisco NX-OS System Messages Reference
Cisco Nexus 7000 Series NX-OS MIB Quick Reference
NX-OS Command References
Cisco Nexus 7000 Series NX-OS Command Reference Master Index, Release 5.x
Cisco Nexus 7000 Series NX-OS Fundamentals Command Reference, Release 5.x
Cisco Nexus 7000 Series NX-OS Interfaces Command Reference, Release 5.x
Cisco Nexus 7000 Series NX-OS Layer 2 Switching Command Reference, Release 5.x
Cisco Nexus 7000 Series NX-OS Quality of Service Command Reference, Release 5.x
Cisco Nexus 7000 Series NX-OS Unicast Routing Command Reference, Release 5.x
Cisco Nexus 7000 Series NX-OS Multicast Routing Command Reference, Release 5.x
Cisco Nexus 7000 Series NX-OS Security Command Reference, Release 5.x
Cisco Nexus 7000 Series NX-OS OTV Command Reference, Release 5.x
Cisco Nexus 7000 Series NX-OS Virtual Device Context Command Reference, Release 5.x
Cisco Nexus 7000 Series NX-OS FabricPath Command Reference, Release 5.x
Cisco Nexus 7000 Series NX-OS System Management Command Reference, Release 5.x
Other Software Document
Cisco Nexus 7000 Series NX-OS Troubleshooting Guide, Release 5.x
Obtaining Documentation and Submitting a Service Request
For information on obtaining documentation, submitting a service request, and gathering additional
information, see the monthly What’s New in Cisco Product Documentation, which also lists all new and
revised Cisco technical documentation, at:
http://www.cisco.com/en/US/docs/general/whatsnew/whatsnew.html

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Preface
Obtaining Documentation and Submitting a Service Request
Subscribe to the What’s New in Cisco Product Documentation as a Really Simple Syndication (RSS) feed
and set content to be delivered directly to your desktop using a reader application. The RSS feeds are a free
service and Cisco currently supports RSS Ver sio n 2.0.

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HACR-1
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Cisco Nexus 7000 Series NX-OS High Availability
Commands
Cisco NX-OS is a resilient operating system that is specifically designed for high availability at the
network, system, and process level. For more information about high availability (HA) concepts and
features for Cisco NX-OS devices, see the Cisco Nexus 7000 Series NX-OS High Availability and
Redundancy Guide, Release 5.x.
This chapter describes the Cisco Nexus 7000 Series NX-OS high availability commands.

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Cisco Nexus 7000 Series NX-OS High Availability Commands
clear bootvar log
HACR-2
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clear bootvar log
To delete the boot variable log, use the clear bootvar log command.
clear bootvar log
Syntax Description This command has no arguments or keywords.
Defaults None
Command Modes Any command mode
SupportedUserRoles network-admin
Command History
Usage Guidelines This command does not require a license.
Examples This example shows how to delete the boot variable log:
switch(config)# clear bootvar log
switch(config)#
Related Commands
Release Modification
4.0(1) This command was introduced.
Command Description
show boot Displays all configured boot variables.
show boot variable Displays the boot variable names.

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Cisco Nexus 7000 Series NX-OS High Availability Commands
clear cores
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clear cores
To delete core dump files of a virtual device context (VDC) from the logflash, use the clear cores
command.
clear cores archive
Syntax Description
Defaults None
Command Modes Any command mode
SupportedUserRoles network-admin
Command History
Usage Guidelines This command does not require a license.
Examples This example shows how to delete core dump files of a VDC from the logflash:
switch(config)# clear cores archive
switch(config)#
Related Commands
archive All core dump files for a VDC from the logflash on the module.
Release Modification
4.0(1) This command was introduced.
Command Description
show cores Displays core dump files of a virtual context device (VDC).

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Cisco Nexus 7000 Series NX-OS High Availability Commands
clear xbar-driver
HACR-4
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clear xbar-driver
To delete the crossbar-related information, use the clear x-bar driver command.
clear xbar-driver [xbar xbar-number | local xbar slot-number]
Syntax Description
Defaults None
Command Modes Any command mode
SupportedUserRoles network-admin
Command History
Usage Guidelines This command does not require a license.
Examples This example shows how to delete the crossbar-related information:
switch(config)# clear xbar-driver xbar 2 inst 1 counters port_num 1 all
switch(config)#
Related Commands
xbar
xbar-number
(Optional) Specifies the crossbar number. The range is from 1 to 5.
local xbar slot-
number
(Optional) Specifies the crossbar slot number. The range is from 1 to 4.
Release Modification
4.0(1) This command was introduced.
Command Description
show module fabric Displays information about the module fabric.
show hardware
fabric-utilization
Displays information about the hardware fabric utilization.

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Cisco Nexus 7000 Series NX-OS High Availability Commands
out-of-service
HACR-5
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out-of-service
To power off a supervisor module in the Cisco NX-OS software, use the out-of-service command.
out-of-service module module-number
Syntax Description
Defaults None
Command Modes Global configuration mode
SupportedUserRoles network-admin
vdc-admin
Command History
Usage Guidelines
This command is not supported on line card modules. For line card modules, use the poweroff command.
You can use the out-of-service command only in the default virtual device context (VDC).
Use this command to safely remove a module from service in the software. Before bringing a module
back into service, you must remove the physical hardware module from the chassis and reinsert it.
This command does not require a license.
Examples This example shows how to take a supervisor module out of service:
switch# configure terminal
switch(config)# out-of-service module 3
Related Commands
module Specifies an I/O module.
module-number Module number. The range is from 1 to 18.
Release Modification
4.0(1) This command was introduced.
Command Description
poweroff Shuts down a supervisor of a line card module in the Cisco NX-OS
reload module Reloads a module in a device.

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Cisco Nexus 7000 Series NX-OS High Availability Commands
poweroff
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poweroff
To power off a supervisor of a line card module in the Cisco NX-OS, use the poweroff command.
poweroff {module module-number | xbar xbar-number}
Syntax Description
Defaults None
Command Modes Global configuration mode
SupportedUserRoles network-admin
vdc-admin
Command History
Usage GuidelinesThis command does not require a license.
Examples This example shows how to take a supervisor module out of service:
switch# configure terminal
switch(config)# poweroff module 5
Related Commands
module module-number Specifies an I/O module. The range is from 1 to 18.
xbar xbar-number Specifies a fabric module. The range is from 1 to 5.
Release Modification
4.0(1) This command was introduced.
Command Description
out-of-service Shuts down a supervisor module in the Cisco NX-OS software.
reload module Reloads a module in a device.

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Cisco Nexus 7000 Series NX-OS High Availability Commands
power redundancy-mode
HACR-7
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power redundancy-mode
To configure the power supply redundancy mode, use the power redundancy-mode command. To
disable the power redundancy mode, use the no form of this command.
power redundancy-mode {combined | insrc-redundant | ps-redundant | redundant}
no power redundancy-mode {combined | insrc-redundant | ps-redundant | redundant}
Syntax Description
Defaults ps-redundant
Command Modes Global configuration
SupportedUserRoles network-admin
Command History
Usage Guidelines You can use the power redundancy-mode command only in the default virtual device context (VDC).
You can configure the power supplies with the following modes:
• Combined mode—This mode does not provide power redundancy. The available power for this
mode is the total power capacity of all power supplies.
• Power supply redundancy mode—This mode provides an extra power supply in case an active power
supply goes down. With this mode, the power supply that can supply the most power operates in the
standby mode. The other one or two power supplies are active. The available power is the amount
of power provided by the active power supply units.
• Input source redundancy mode—This mode uses two electrical grids, each one powering a half
module within each power supply. If one power grid goes down, each power supply continues to
draw power through its other half module. The available power is the amount of power by the lesser
of the two grids through the power supplies.
• Full redundancy mode—This mode combines power supply redundancy and input source
redundancy, which means that the chassis has an extra power supply and each half of each power
supply is connected to one electrical grid while the other half of each power supply is connected to
the other electrical grid. The available power is the lesser of the available power for power supply
mode and input source mode.
combined Specifies the combined power supply mode.
insrc-redundant Specifies the input source redundancy mode.
ps-redundant Specifies the power support redundancy mode.
redundant Specifies the full redundancy mode.
Release Modification
4.0(1) This command was introduced.

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Cisco Nexus 7000 Series NX-OS High Availability Commands
power redundancy-mode
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This command does not require a license.
Examples This example shows how to configure the power supply redundancy mode:
switch# configure t
switch(config)# power redundancy-mode redundant
This example shows how to disable the power supply redundancy mode:
switch# configure t
switch(config)# no power redundancy-mode redundant
Related Commands Command Description
show environment Displays information about the device hardware environment.

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Cisco Nexus 7000 Series NX-OS High Availability Commands
reload module
HACR-9
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reload module
To reload a module in the device, use the reload module command.
reload module slot [force-dnld]
Syntax Description
Defaults None
Command Modes Any command mode
SupportedUserRoles network-admin
Command History
Usage Guidelines You can use the reload module command only in the default virtual device context (VDC).
To display information about the hardware on your device, use the show hardware command.
This command does not require a license.
Examples This example shows how to reload a module:
switch# reload module 2
Related Commands
slot Chassis slot number. The slot range depends on the system.
force-dnld (Optional) Forces the download of software to the module.
Release Modification
4.0(1) This command was introduced.
Command Description
show version Displays the software version that is currently running on the system.

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Cisco Nexus 7000 Series NX-OS High Availability Commands
show boot
HACR-10
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show boot
To display the boot variables in the startup configuration, use the show boot command.
show boot
Syntax Description This command has no arguments or keywords.
Defaults None
Command Modes Any command mode
SupportedUserRoles network-admin
network-operator
vdc-admin
vdc-operator
Command History
Usage Guidelines This command does not require a license.
Examples This example shows how to display the boot variables in the startup configuration:
switch(config)# show boot
Current Boot Variables:
sup-1
kickstart variable = bootflash:/n7000-s1-kickstart.4.1.5.gbin.S1
system variable = bootflash:/n7000-s1-dk9.4.1.5.gbin.S1
sup-2
kickstart variable = bootflash:/n7000-s1-kickstart.4.1.5.gbin.S1
system variable = bootflash:/n7000-s1-dk9.4.1.5.gbin.S1
No module boot variable set
Boot Variables on next reload:
sup-1
kickstart variable = bootflash:/n7000-s1-kickstart.4.1.5.gbin.S1
system variable = bootflash:/n7000-s1-dk9.4.1.5.gbin.S1
sup-2
kickstart variable = bootflash:/n7000-s1-kickstart.4.1.5.gbin.S1
system variable = bootflash:/n7000-s1-dk9.4.1.5.gbin.S1
No module boot variable set
switch(config)#
Release Modification
4.2 This command was introduced.