Notification – The last operation failed for the entity with the following error message. The object <Logical Switch Name> is in use, this operation cannot be performed. Remove all configuration referring to this object and retry operation.
I recently working with a customer who was unable to remove or delete a logical switch that had been created. The first step was verify that no virtual machines were connected. To do so, I did the following:
Remove all Virtual Machines and NSX Edges from the Logical Switch
- Click the vSphere Web Client Home icon.
- On the vSphere Web Client Home tab, double-click on the Networking and Security icon.
- In the left navigation pane, select Logical Switches.
- Double-click on the Logical Switch you are attempting to delete.
- Select the Related Objects tab, then click on the Virtual Machines button.
- Note: If you have any remaining virtual machines connected to the Logical Switch you are attempting to delete, migrate them to another Logical Switch.
- Click on the Manage tab, then click on the NSX Edges button.
- Note: If you have any connections (interfaces) to an NSX Edge you will need to remove them.
In my case the customer had migrated the virtual machines, but had neglected to remove the connection to the NSX Edge. Once the NSX Edge was removed, we were able to successfully delete the logical switch.
Brad Hedlund, Engineering Architect with the CTO office of VMware’s Networking and Security Business Unit (NSBU), posted an article to help customers who are evaluating both VMware NSX and Cisco ACI. You can read more here.
According to Lauren Malhoit the Simple ACI Toolkit is basically a combination of an NX-OS like CLI and some custom python scripts that can be used to create and show common daily configuration and administrative actions. Today it is limited in scope and does not provide the ability to create service graphs, VMM Domains, SPAN, Atomic Counters, or to view most telemetry and health score information. However, the tool will give you a head start on automating basic configuration tasks. For more details visit
In another great post by Dmitri Kalintsev on his Telecom Occasionally bLOG I found a little nugget of incredibly useful information. Dmitri’s article illustrates in great detail the operation of VXLAN SwSec module for
VM IP Update. It also details how to change the logging level for the NSX Control Plane logs so that you can observe VXLAN control plane operations. Here is an excerpt from the article NSX-v under the hood: VXLAN ARP suppression
NSX Control Plane logs are written into
/var/log/netcpa.log on ESXi host. Logging level by default is “info”, and needs to be changed to “verbose” to observe VXLAN control plane operations described here. To do that (at your own risk!):
chmod +wt /etc/vmware/netcpa/netcpa.xml
/etc/vmware/netcpa/netcpa.xml and change “info” in <level></level> section of <log> to “verbose”
Geoff Wilmington @vWilmo put together an outstanding breakdown of the VCP-NV Blueprint, for those of you preparing for the exam this will certainly be a useful resource. Find the details in his bLOG post VCP-NV Blueprint Breakdown.
Business Insider published an article by Julie Bort which details how Cisco lost a bidding war to VMware in an attempt to purchase Nicira on July 23, 2012. According to the article VMware ultimately paid $1.05 billion in cash, plus another $210 million in stock, while Cisco Cisco offered $750 million in a mostly stock transaction that looked like $1 billion on paper.