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vCloud Air® Hybrid Cloud Manager™ Installation and Administration Guide
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Unstretching an L2 Network
This procedure unstretches a stretched Layer 2 network. This task is necessary if you want to remove the L2C service
appliance, or if you want to completely uninstall Hybrid Cloud Manager.
1. Check Stretched Networks:
From the Hybrid Cloud Manager plugin page, view the Extended Networks page. If there are active jobs, wait until
they are complete.
2. Log in to the vSphere Web Client and click on Hosts and Clusters.
3. Click on the Networking tab. From the Networking section, identify the port group for the network you want to
unstretch.
4. Right-click the port group, and from the submenu, select Hybridity Actions, and then choose Unstretch Network.
Removing Hybrid Service Appliances
You might want to remove one of the service appliances if you change your mind about your installation architecture, or
if you are preparing to remove Hybrid Cloud Manager.
Never delete virtual appliances from the vSphere inventory. Use the Hybrid Cloud Manager to administer the appliances.
The virtual appliances must be in the inactive state when they are removed.
1. Check the vSphere Web Client task console for any running migrations, and wait until they are complete. See
“Migrating a Sample VM from a vCenter to the Cloud,” Step 14.
2. If you are using the Layer 2 extension, follow the steps in, “Unstretching an L2 Network” for all stretched networks,
then continue to Step 3.
3. Ensure there are no active Hybrid Cloud Manager jobs of any type.
4. In the vSphere Web Client interface, select the Hybrid Cloud Manager plugin in the left-hand panel.
5. Click Administration (in the left-hand panel), and click the Hybrid Cloud Service Configuration option. A list of the
installed appliances is displayed in the right-hand pane.
6. Locate the Hybrid Cloud Gateway appliance and click the entry to show the details.
Note: The Hybrid Cloud Gateway must be in the inactive state. If necessary, deactivate the
appliance.
7. Click the X icon to remove the appliance (the Remove button is on the lower right).
Hybrid service appliances that use the Hybrid Cloud Gateway are removed from both the vCenter and the vCloud Air
vDC.
Note: If you stretched a network but did not route the network through the Hybrid Cloud Gateway,
the L2 Concentrator won’t be automatically removed when the Hybrid Cloud Gateway is
removed. Expand the appliance details, and click the X icon to remove the L2 Concentrator.
Troubleshooting
This section provides workarounds for features that are not performing as designed, and also discusses some possible
configuration changes to address performance issues.