Module bays represent a space or slot within a device in which a field-replaceable module may be installed. A common example is that of a chassis-based switch such as the Cisco Nexus 9000 or Juniper EX9200. Modules in turn hold additional components that become available to the parent device.
!!! note
If you need to model child devices rather than modules, use a [device bay](./devicebay.md) instead.
!!! tip
Like most device components, module bays are instantiated automatically from [module bay templates](./modulebaytemplate.md) assigned to the selected device type when a device is created.
The device to which this module bay belongs.
The module to which this bay belongs (optional).
The module bay's name. Must be unique to the parent device.
An alternative physical label identifying the module bay.
The numeric position in which this module bay is situated. For example, this would be the number assigned to a slot within a chassis-based switch.