Solved

vSphere - Limited Traffic Between VMs on different hosts following switch migration

Posted on 2016-08-19
4
84 Views
Last Modified: 2016-08-22
Hello, we just migrated to distributed switches for our VMs on a VMware 6 U2 cluster. Following the upgrade, our VMs are having trouble talking to each other when they are on different hosts. They can ping each other by name, but things like Windows traffic won't go through. Move the VMs the same host and they can talk just fine.

We've been on the phone for hours with VMware support and getting nowhere. Its an odd problem as this was working before the switch migration. But now even when we move the VMs back to standard switches the problems continue.

I know that's all pretty vague, but if anyone has some insight, I'd appreciate it.
0
Comment
Question by:willp2
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 2
  • 2
4 Comments
 
LVL 121

Accepted Solution

by:
Andrew Hancock (VMware vExpert / EE MVE^2) earned 500 total points
ID: 41763317
you can ping,  but Windows traffic won't go through ?

what is a ping then?

what windows traffic ?

firewall configs? VLAN issues?
0
 
LVL 1

Author Comment

by:willp2
ID: 41763359
By Windows traffic I mean RDP and file sharing, that sort of thing. VMs can ping each other, but nothing else if they are on different hosts.

There is no firewall between the two and no ACL on the LAN. The VLANs all seem to be working correctly. We can see the traffic but its getting lost some place. Looking at physical switches at the moment.
0
 
LVL 121
ID: 41763515
you are using VMXNET3 interface ?
0
 
LVL 1

Author Comment

by:willp2
ID: 41765973
There was a problem with physical switching after all. Thanks for the comments.
0

Featured Post

Free NetCrunch network monitor licenses!

Only on Experts-Exchange: Sign-up for a free-trial and we'll send you your permanent license!

Here is what you get: 30 Nodes | Unlimited Sensors | No Time Restrictions | Absolutely FREE!

Act now. This offer ends July 14, 2017.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

When converting a physical machine to a virtual machine using VMware vCenter Converter Standalone or vCenter Converter Enterprise, if an adapter type is not selected during the initial customization the resulting virtual machine may contain an IDE d…
Ransomware is a malware that is again in the list of security  concerns. Not only for companies, but also for Government security and  even at personal use. IT departments should be aware and have the right  knowledge to how to fight it.
Teach the user how to rename, unmount, delete and upgrade VMFS datastores. Open vSphere Web Client: Rename VMFS and NFS datastores: Upgrade VMFS-3 volume to VMFS-5: Unmount VMFS datastore: Delete a VMFS datastore:
This Micro Tutorial steps you through the configuration steps to configure your ESXi host Management Network settings and test the management network, ensure the host is recognized by the DNS Server, configure a new password, and the troubleshooting…

691 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question