• This course has been retired. Users who have purchased the course will still have access to it, however it is no longer available for purchase.

vSphere Essentials

What should I do if my video will not play?

There are many things that can affect the quality of your video so we have put together these instructions to help you review all the things that need to be tested in order to trouble-shoot video quality.

The first thing we want to assure you is that we have done everything possible to make sure that our videos will play well.  Our videos are hosted in the cloud by Akamai.  Akamai has servers around the world to make sure that your videos are sent from the server that is closest to you.  By hosting our videos with Akamai we make sure that you receive the highest video quality. If you are experiencing video buffering or freezing at home or at the office there are a number of things you can do to help us troubleshoot.

  • Popup Blockers: Please check to make sure that your pop-up blocker is turned off when you go to our website. This will prevent the video window from opening.
  • Your Connection Speed: Internet speed needs to be 2.0 Mbps upload and download to successfully watch the videos.  You will want to check and see if your connection speed is 2.0 Mbps or higher.  You can do this by clicking on this link and running a speed test.
  • Jitter and Packet Loss: Your Jitter rate lets us know if your connection speed is consistent while your Packet Loss rate lets us know if your internet connection could be losing pieces of the video.
    • Go to https://www.dotcom-tools.com/ping-test.aspx to determine if there is any Jitter or Packet Loss on your connection.
    • This is measured by a letter scale with A being the best.
      • If your Packet Loss is below a B, your connection is losing pieces of the video and causing the video to skip.
      • If your Jitter is below a B, your connection speed is very inconsistent and may be changing while you are watching the video which will result in buffering issues.
      • If either of these is the case you will need to contact your internet provider.
  • Ports: You will need to have ports 1935, 443 and 80 open. You can run a port test at this link.
    • If you are watching from work and those ports are not open, check with your IT department.
  • Shared Internet Connection: If you are on a shared internet connection, test playing videos during non-peak hours when usage by others on your network is low.
  • Reset Your Browser: If you've tried all the previous steps, your browser may be retaining data that needs to be deleted, and this requires a reset. If you are using Chrome, use the instructions in this link to reset your browser. If you are using Internet Explorer (IE) you may need to reset it. You can do this by clicking on the cog icon on the top right of your page. Then click on tools, internet options, advanced and reset. If you are using Firefox, use the instructions in this link to reset your browser.
  • Other things to check:
    • At home or at work, test using different browsers and computers to see if you get the same result.
      • Make sure you have the latest version of the browser you are using.
    • If you are using Internet Explorer (IE) you may need to reset it. You can do this by clicking on the cog icon on the top right of your page. Then click on tools, internet options, advanced and reset.
    • Try from a different location using a different network.
    • If you are on a wireless connection try a wired solution.
    • If you are on a home network:
      • Test playing the videos when you are the only user on the network.
      • Try by-passing your router to eliminate it as the point of failure. A direct plug from your ISP to your computer will take care of this and will make sure that neither your router nor other users are affecting your connection.
    • If you are running Firefox, you can check your plugins here: https://www.mozilla.org/en-US/plugincheck/
  • Make sure you do not have any other programs open. File sharing and peer to peer sharing programs, even when limited to low bandwidth, can make it almost impossible to stream properly.
  • Tracking Progress on Mobile Devices: The GogoTraining site is designed to use the native player found in your browser. If you are taking your course on a mobile device and want to make sure your progress is tracked, then you will need to play the videos from the native player that is in your browser. Do not download any third party apps to play the videos as they do not allow your progress to be recorded. If you have installed a third party app and want to receive a Course Completion Certificate, then you will need to uninstall the 3rd party app or see if the app has the ability for you to disable it for certain sites.
  • Submitting Debugging Information If you have tried everything else and still are having trouble viewing the videos, you can visit this page where you can help us debug your particular setup by following the instructions on the page and submit the debugging information to us.
Video Title
00: Course Introduction
3 min
01: Legacy Versus Virtual Deployment Part 1
26 min
02:Legacy Versus Virtual Deployment Part 2
19 min
03: vSphere Cloud Computing
24 min
04: ESX and ESXi Overview
21 min
05: Installing ESX
27 min
06: Post Installation
29 min
07: Introduction to Virtual Networking
30 min
08: Standard Virtual Switches
17 min
09: NAS Shared Storage
19 min
10: Virtual Machine (VM) Hardware
27 min
11: Installing an Operating System into a VM
16 min
12: A vCenter Overview
19 min
13: Installing vCenter
20 min
14: vCenter First Look
13 min
15 vCenter Additional Features
23 min
16: Course Summary
3 min
5 hrs 36 mins

Larry Karnis

I am an IT professional with more than 25 years of experience. My current focus is on VMware virtualization. I have been working with VMware products since 2001 and with VMware ESX and vCenter since 2003. I earned my VCP in 2004; my VCP number is 993 (making me the 993rd person in the world to earn VCP). I worked for VMware as a contract trainer from 2004 through 2009 - when I voluntarily surrendered my VMware Certified Instructor (VCI) status to start ESXLab.com.

I offer the following services and produts to my clients:

  • VMware vSphere courseware. I have developed a complete, 5-day VMware training class (on which the Gogogh VMware class is based). Combined, my vSphere Study Guide and Lab Guide contain more than 900 pages of in-depth courseware and lab exercies. If you want to ramp up on VMware vSphere quickly,  hit *all* of the key point, and learn the skills critical to your success - you should get this book set.
  • Remote acccess labs. IT training is a hands on activity. VMware training is very hardware intensive and requires high end, enterprise servers. I maintain pods of HP DL365 servers that I make available to people who want to work through my VMware courseware lab exercies. Contact me for more details.
  • Consulting services. New VMware installations are expensive. To maximize the value delivered by this investment, it is critical that your infrastructure be designed and built by someone who is experienced with VMware. Contact me to find out more about how I can help ensure your success!
  • Training services. Want to hold a VMware training event for your staff or customers? Need a complete turnkey solution that includes an experienced instructor, top quality courseware and remote labs that match the hardware you have in your datacenter? If so, contact me for cost effective quote.

I began working in IT in 1984 after earning a B.Sc. in Computer Science and Mathematics from the University of Toronto. I spent the 1980's and 1990s working on UNIX and then Linux systems. My Linux experience allowed me to fast track my virtualization skills (as early VMware ESX required a lot of Linux skills to administer).

I have since taught over 100 VMware virtualization classes for both VMware and for 3rd parties (including Dell, Alternative Technology, New Horizons and others). I also take short term VMware vSphere consulting engagements, assisting my clients in design, implementation, troubleshooting, upgrades, back up, disaster recovery and other services.

Please e-mail me (or call) with any questions or comments you may have.


E-Mail: larry.karnis@esxlab.com

Phone: (416) 890-8191


Thank you.



Course Materials

When you purchase this course you will receive access to these materials.

  • Student Guide

Course Links

These links are activated when you purchase this course.

  • Course Survey


This course comes with a Transcript that tracks your progress. You can use your transcript to view and monitor your progress and when you complete the course, you can print or email the transcript.

Certificate of Completion

You will be awarded a Certificate of Completion when you finish this course. You will be able to print or email the certificate and share your accomplishment with everyone.