Table Of Contents

Preface

Audience

Document Organization

Document Conventions

Preface

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This document provides guidance for troubleshooting issues that may appear when using Cisco NX-OS. This document introduces tools and methodologies to recognize a problem, determine its cause, and find possible solutions.

Audience

This publication is for experienced network administrators who configure and maintain NX-OS devices.

Document Organization

This document is organized into the following chapters:

Chapter	Description
"Troubleshooting Overview"	Describes basic concepts, methodology, and tools to use for troubleshooting.
"Troubleshooting Upgrades and Reboots"	Describes how to identify and resolve problems that might occur when installing, upgrading, or rebooting Cisco NX-OS.
"Troubleshooting Licensing"	Describes procedures used to troubleshoot licensing issues.
"Troubleshooting VDCs"	Describes how to identify and resolve problems that might occur when using virtual device contexts (VDCs).
"Troubleshooting Ports"	Describes how to identify and resolve problems that might occur with ports.
"Troubleshooting Port Channels and Trunking"	Describes procedures to troubleshoot port channels and trunks.
"Troubleshooting VLANs"	Describes procedures to troubleshoot VLANs.
"Troubleshooting STP"	Describes procedures to troubleshoot spanning tree.
"Troubleshooting Routing"	Describes procedures to troubleshoot routing.
"Before Contacting Technical Support"	Describes the steps to perform before calling for technical support with any Cisco NX-OS device.
"Troubleshooting Tools and Methodology"	Describes the troubleshooting tools and methodology available for Cisco NX-OS.

Document Conventions

Command descriptions use these conventions:

Convention	Description
boldface font	Commands and keywords are in boldface.
italic font	Arguments for which you supply values are in italics.
[ ]	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 examples use these conventions:

screen font	Terminal sessions and information that the switch displays are in screen font.
boldface screen font	Information that 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.

This document uses the following conventions:

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Note Means reader take note. Notes contain helpful suggestions or references to material not covered in the manual.

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Caution Means reader be careful. In this situation, you might do something that could result in equipment damage or loss of data.

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Related Documentation

Cisco NX-OS documentation is available at the following URL:

http://www.cisco.com/en/US/products/ps9372/tsd_products_support_series_home.html

The documentation set for Cisco NX-OS includes the following documents:

Release Notes

Cisco NX-OS Release Notes, Release 4.0

NX-OS Configuration Guides

Cisco NX-OS Getting Started with Virtual Device Contexts, Release 4.0

Cisco NX-OS Fundamentals Configuration Guide, Release 4.0

Cisco NX-OS Interfaces Configuration Guide, Release 4. 0

Cisco NX-OS Layer 2 Switching Configuration Guide, Release 4.0

Cisco NX-OS Quality of Service Configuration Guide, Release 4.0

Cisco NX-OS Unicast Routing Configuration Guide, Release 4.0

Cisco NX-OS Multicast Routing Configuration Guide, Release 4.0

Cisco NX-OS Security Configuration Guide, Release 4.0

Cisco NX-OS Virtual Device Context Configuration Guide, Release 4.0

Cisco NX-OS Software Upgrade Guide, Release 4.0

Cisco NX-OS Licensing Guide, Release 4.0

Cisco NX-OS High Availability and Redundancy Guide, Release 4.0

Cisco NX-OS System Management Configuration Guide, Release 4.0

Cisco NX-OS XML Management Interface User Guide, Release 4.0

Cisco NX-OS System Messages Reference

Cisco NX-OS MIB Quick Reference

NX-OS Command References

Cisco NX-OS Command Reference Master Index, Release 4.0

Cisco NX-OS Fundamentals Command Reference, Release 4.0

Cisco NX-OS Interfaces Command Reference, Release 4.0

Cisco NX-OS Layer 2 Switching Command Reference, Release 4.0

Cisco NX-OS Quality of Service Command Reference, Release 4.0

Cisco NX-OS Unicast Routing Command Reference, Release 4.0

Cisco NX-OS Multicast Routing Command Reference, Release 4.0

Cisco NX-OS Security Command Reference, Release 4.0

Cisco NX-OS Virtual Device Context Command Reference, Release 4.0

Cisco NX-OS High Availability and Redundancy Command Reference, Release 4.0

Cisco NX-OS System Management Command Reference, Release 4.0

Other Software Document

Cisco NX-OS Troubleshooting Guide, Release 4.0

Obtaining Documentation and Submitting a Service Request

or 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

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 version 2.0.