We help IT Professionals succeed at work.
Get Started
Troubleshooting Question

VLAN Fails on VM Portgroup

48 Views
Last Modified: 2021-03-23
Points of My Scenario:
1. I have 3 ESXi standalone servers (A, B, and C) identically configured and connected to physical network.

2. The vswitch0 for each ESXi server is connected to 2 physical NICs.

3. The switch ports connecting all ESXi servers are trunked to the same VLANs 1, 2, 3, and 4.

4. I have test VMs running on each ESXi server.

5. Whenever I configure the VMs onto VLANs 1, 2, and 3 portgroups - they are all able to communicate with each other.

6. Whenever I configure VMs onto VLAN 4 portgroup, only VMs on ESXi servers A and C can communicate.

7. I have removed and re-added VLAN 4 to ESXi server B using the web UI and CLI (and rebooted after each removal/re-add): still no success.

8. HOWEVER, when I configure ESXi server B's management portgroup to VLAN4, this physical ESXi B server is able to ping VMs on ESXi A and ESXi C - and, VMs on ESXi A and ESXi C can ping the physical ESXi B: proving VLAN4 is working on the physical ports used by ESXi B.

9. I have also executed "Reset System Configuration" under "System Customization" at the DCUI, then re-configured and performed testing as above (getting same results).

QUESTION: What else can I troubleshoot to figure out why the VLAN 4 portgroup on ESXi B won't work.

Comment
Watch Question
VMware and Virtualization Consultant
CERTIFIED EXPERT
Fellow
Expert of the Year 2017
Commented:
This problem has been solved!
Unlock 1 Answer and 21 Comments.
See Answer
Why Experts Exchange?

Experts Exchange always has the answer, or at the least points me in the correct direction! It is like having another employee that is extremely experienced.

Jim Murphy
Programmer at Smart IT Solutions

When asked, what has been your best career decision?

Deciding to stick with EE.

Mohamed Asif
Technical Department Head

Being involved with EE helped me to grow personally and professionally.

Carl Webster
CTP, Sr Infrastructure Consultant
Ask ANY Question

Connect with Certified Experts to gain insight and support on specific technology challenges including:

  • Troubleshooting
  • Research
  • Professional Opinions
Did You Know?

We've partnered with two important charities to provide clean water and computer science education to those who need it most. READ MORE