When you create a DVPG, there are three different bindings: Static, Dynamic, and Ephemeral that can be configured and by default, Static binding is used. This is actually an expected behavior and there is an easy work around, let me explain. I lost access to my vCenter Server and even though I could connect directly to the ESXi host, I was not able to change the VM Network to the Distributed Virtual Portgroup (DVPG). What ends up happening is that the single pNIC is now associated with the VDS, but the VM portgroups are not migrated and the reason that this is problematic is that the vCenter Server is also running on the ESXi host which it is managing and has now lost network connectivity □ This feature could be disabled temporarily by editing the vCenter Server Advanced Setting ( ) which would allow us to by-pass the single NIC issue, however this does not solve the problem entirely. In vSphere 5.1, we introduced a new feature which would automatically roll back a network configuration change if it negatively impacted network connectivity to your vCenter Server. After a couple minutes of searching around the web, I stumbled across this serverfault thread here which provided a partial solution to my problem. Unfortunately, I had no other choice and needed to find a solution. As you might have guessed, this is a problem when looking to migrate from a Virtual Standard Switch (VSS) to VDS, as it requires at least two NICS. Intel NUC) is that they only have a single network interface. I could have used my remote lab, but given what I was testing was a bit "experimental", I prefered using my home lab in the event I need direct console access. At home, I run ESXi on a single Apple Mac Mini and one of the challenges with this and other similar platforms (e.g. When the procedure has been completed, you are able to ping and access the vCSA once again.Earlier this week I needed test something which required a VMware Distributed Virtual Switch (VDS) and this had to be a physical setup, so Nested ESXi was out of the question. If the vCSA is attached to a dvSwitch to access the network and all vmnics are assigned to the dvSwitch, the only possible solution to recover the vCSA functionality is the creation of a temporary virtual switch (vSwitch) using a vmnic detached from the dvSwitch. How can you properly restore a vCSA in case of need then? Also changing a mapped port group is not allowed without a vCenter and you will get an error if you try to do this action. If you don't have an ephemeral port group available, you can't create a new one since you can't have a dvSwitch without a vCenter Server. In case of a vCSA failure, the first action normally performed by administrators is the restore of the VM from the backup.Īnyhow, even if the restore completes successfully the ping to the vCSA is not responding and the VM is unaccessible from the network. It covers the full procedure to properly restore the vCenter attached to a dvSwitch configuring a port group as Ephemeral. This article has been written for StarWind blog and can be found in this page. In an environment running Distributed vSwitches, the vCSA binding to the dvSwitch virtual port can behave weirdly with the result of losing the connection with the virtual machine. The procedure to restore a failed vCSA connected to Distributed vSwitch (dvSwitch) could be tricky if the infrastructure uses dvSwitches with no ephemeral port group available.
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