Back to Basics: Troubleshooting VM Network Connectivity

Sometimes those of us that have been doing virtualization for a while forget that others that haven’t been doing it don’t always know where to look at.  So, in this post I am going to go over the things to check when you are having issues connecting to a VM.

1.  First step to check is whether the OS has the proper network information, ip, gateway, subnet to get out.


2.  If step 1 is good, you then want to check under the settings of the VM and make sure that the virtual nic is connected.


3.  Next, check to make sure you are connected to the proper virtual network.  If you have a standard switch and a VDS, make sure you select the right one.

network2  4.  Make sure that your portgroup is configured correctly and your switch has physical uplinks connected.  Check that the VLAN ID is correct.network35.  Final thing to check is whether the VLAN is authorized and ports enabled for the physical port that the phsycial NIC is connected to.

6.  Beyond this you would need to check the physical switch configurations to make sure it is configured properly for the traffic.

Vsphere 6 Announced!

This has been a crazy year for me both personally and professionally.  I was just awarded the vExpert 2015 award and I am greatly honored.  I am hoping to get more posts out this year so I can keep it running.

First post of the year will obviously cover some of this new announcement.  There are many changes and many of the experts in the industry have done a lot of work so I will just be compiling the list of links here.  As I get more acquainted with the technology and involved I will begin making more posts about it.

Vsphere 6 Announcement:

vExpert Vsphere 6 compilation list:

28 Days of February Announcements:

Vsphere 6 What’s New:

Here is a brief list of changes:

– Clusters can now support up to 64 hosts

– Vmotion enhancement: Long Distance Vmotion, Cross Switch Vmotion, and Cross Vcenter Vmotion

– Fault Tolerance Enhancement: Up to 4 vCPU’s supported

-VVOLS – VM-aware storage arrays

-Content Library – a new way to store templates/isos in a central repository that all Vcenters can use.