Solved

VM MAC COnflict

Posted on 2016-09-22
6
584 Views
Last Modified: 2016-09-23
VM MAC COnflict

I have restored VM from Veeam to the same Vcenter, but different Datastore.
I got an alert VM MAC Conflict.

Any idea why ?

Original VM was renamed from VM1234 to VM1234-Old, the restored one kept the name VM1234
The restored one stayed powered off and the VM1234-Old was on.

I turned off the VM1234-Old and powered on VM1234

Any impact per the alert? and what is the best practice when you restore the entire VM to the same VCenter.?


Thanks
0
Comment
Question by:jskfan
[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
  • 2
6 Comments
 
LVL 10

Expert Comment

by:Richardson Porto
ID: 41811539
This is the expected behaviour since the original virtual machine is still present on the inventory. See the Veeam article: https://www.veeam.com/kb1669
0
 
LVL 121

Assisted Solution

by:Andrew Hancock (VMware vExpert / EE MVE^2)
Andrew Hancock (VMware vExpert / EE MVE^2) earned 250 total points
ID: 41811558
Because the Backup restored is the SAME e.g. CLONE!

You would have been better to use the CLONE function!

Just edit the VM Settings, edit the network interface and change MAC Address.

Or remove from Inventory, and it will ask if you've moved or copied!

And if you don't know the Answer.

See my EE Article

HOW TO: Select the right answer to "I Moved It" or "I Copied It" in VMware vSphere (ESXi)
0
 

Author Comment

by:jskfan
ID: 41812409
if the restored VM is in different Vcenter and Different Datastore than the existing VM. would this MAC Conflict alarm pop up ?

Or it also depends  on whether the VMs are on the samee ESX hosts /Clusters ?
0
Get free NFR key for Veeam Availability Suite 9.5

Veeam is happy to provide a free NFR license (1 year, 2 sockets) to all certified IT Pros. The license allows for the non-production use of Veeam Availability Suite v9.5 in your home lab, without any feature limitations. It works for both VMware and Hyper-V environments

 
LVL 121
ID: 41812431
Not likely.

You MUST be aware of what you are restoring and to where, and if it's the SAME as an existing VM in your organisation.

Just the same as two computers with same IP Address.

We have seen in the past two physical desktop computers, with the same MAC Addresses, when purchased in bulk e.g. 250-500 at a time.
0
 
LVL 10

Accepted Solution

by:
Richardson Porto earned 250 total points
ID: 41812439
If you restore the virtual machine on a different vCenter server it will not conflict, since the expected behavior is that MAC address must be unique even in different vCenters. About the datastore/host/cluster, it does not matter.

Anyway, you should not worry, just power on the restored virtual machine and a new MAC address will be assigned automatically.
0
 

Author Closing Comment

by:jskfan
ID: 41813049
Thank you Guys
0

Featured Post

Efficient way to get backups off site to Azure

This user guide provides instructions on how to deploy and configure both a StoneFly Scale Out NAS Enterprise Cloud Drive virtual machine and Veeam Cloud Connect in the Microsoft Azure Cloud.

Question has a verified solution.

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

If we need to check who deleted a Virtual Machine from our vCenter. Looking this task in logs can be painful and spend lot of time, so the best way to check this is in the vCenter DB. Just connect to vCenter DB(default DB should be VCDB and using…
Previously, on our Nano Server Deployment series, we've created a new nano server image and deployed it on a physical server in part 2. Now we will go through configuration.
Teach the user how to edit .vmx files to add advanced configuration options Open vSphere Web Client: Edit Settings for a VM: Choose VM Options -> Advanced: Add Configuration Parameters:
This video shows you how easy it is to boot from ISO images for virtual machines with the ISO images stored on a local datastore on the ESXi host.

617 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