Book Image

VMware vSphere Troubleshooting

Book Image

VMware vSphere Troubleshooting

Overview of this book

VMware vSphere is the leading server virtualization platform with consistent management for virtual data centers. It enhances troubleshooting skills to diagnose and resolve day to day problems in your VMware vSphere infrastructure environment. This book will provide you practical hands-on knowledge of using different performance monitoring and troubleshooting tools to manage and troubleshoot the vSphere infrastructure. It begins by introducing systematic approach for troubleshooting different problems and show casing the troubleshooting techniques. You will be able to use the troubleshooting tools to monitor performance, and troubleshoot issues related to Hosts and Virtual Machines. Moving on, you will troubleshoot High Availability, storage I/O control problems, virtual LANS, and iSCSI, NFS, VMFS issues. By the end of this book, you will be able to analyze and solve advanced issues related to vShpere environment such as vcenter certificates, database problems, and different failed state errors.
Table of Contents (16 chapters)
VMware vSphere Troubleshooting
Credits
About the Author
About the Reviewers
www.PacktPub.com
Preface
Installing VMware vRealize Operations Manager
Power CLI - A Basic Reference
Index

Troubleshooting with port mirroring


Port Mirroring or Switched Port Analyzer is a procedure of analyzing network traffic. As the name suggests, when port mirroring is enabled, you can mirror a copy of network packetes' flow into another port or a VLAN and send it to another port for analysis.

You will see how port mirroring is configured by recognizing a source port and then routing its mirrored traffic to a destination port. Follow this step-by-step guide to enable port mirroring. Right click on a distributed switch and click on Edit.... Then click on the tab named Port Mirroring as seen in the following screenshot:

Click on Add... as seen in the preceding screenshot. A wizard will appear, where you must specify the Name and click Next, as you can see in the following screenshot:

Choose Ingress traffic from the Traffic direction drop down menu. This menu also includes two other options: Egress and Ingress/Egress. Define the port number of the virtual machine you want to monitor. You can get...