About Device Groups
When you create a device group, you need to identify the unique characteristics that distinguish that group of devices from others in your network. For example, in larger Cisco WAAS deployments, one set of devices may need to be configured with authentication settings that are different from another set of devices in your Cisco WAAS network. In this situation, you would create two device groups that each contain different authentication settings, and then assign your devices to the most appropriate group.
If you have devices that reside in different time zones, you can also create device groups based on geographic regions so that the devices in one group can have a different time zone setting from the devices in another group.
In smaller Cisco WAAS deployments where all devices can be configured with the same settings, you may only need to create one general device group. This setup allows you to configure settings for the group, and then apply those settings consistently across all your Cisco WAAS devices.
Groups not only save you time when configuring multiple devices, but they also ensure that configuration settings are applied consistently across your Cisco WAAS network.
There are two types of device groups: WAAS Device Groups and WAAS Express Device Groups. These groups are explained in more detail in Creating a New Device Group.
When you register a Cisco WAAS device with the Cisco WAAS Central Manager, that device automatically joins the AllWAASGroup, which is the default device group on the system for Cisco WAAS devices. If you create additional device groups, you need to decide if you want your devices to belong to more than one group (the default AllWAASGroup and the new device group you create). If you only want a device to belong to a device group that you create, make sure that you remove the device from the default AllWAASGroup. WAAS Express devices automatically join the default AllWAASExpressGroup device group when they are registered with the Central Manager.
Cisco WAAS devices and Cisco WAAS Express devices cannot be mixed in the same device group. You choose the device group type when you create the group and it cannot be changed. When you create a Cisco WAAS Express type of device group, you can copy policies from an existing Cisco WAAS or Cisco WAAS Express group, but policies cannot be copied after creation.