Hi Jorge,
Operating Roles for the Autonomous Access Point/Bridge
The autonomous access point/bridge unit can be configured into one of seven operating roles
Root Bridge Specifies that the unit is operating as a root bridge and that it connects directly to the main Ethernet LAN network. In this mode, the unit accepts associations from other Cisco Aironet bridges and wireless client devices.
Non-Root Bridge Specifies that the unit is operating as a non-root bridge, that it connects to a remote LAN network, and that it must associate with a Cisco Aironet root bridge using the wireless interface.
Root Bridge with Wireless Clients Specifies that the unit is operating as a root bridge and accepts wireless client associations.
Non-Root Bridge with Wireless Clients Specifies that the unit is operating as a non-root bridge and accepts wireless client associations.
Access Point Specifies that the unit operates as an access point connected to the main Ethernet LAN network. In this mode, wireless client devices are allowed to associate to the unit.
Repeater Specifies that the unit is operating as a repeater (also called repeater non-root) that is not connected to the wired LAN and supports wireless clients.
Workgroup Bridge Specifies that the unit operates as a workgroup bridge connected to a small wired Ethernet LAN network through an Ethernet hub or switch. The workgroup bridge must associate to a Cisco Aironet access point or a Cisco Aironet bridge.
From this good doc;
Cisco Aironet 1300 Series Wireless Outdoor Access Point/Bridge Hardware Installation Guide
http://www.cisco.com/en/US/products/ps5861/products_installation_guide_chapter09186a008079b93b.html#wp1078911
Hope this helps!
Rob
