Owners manual
Figure 86 Bonjour Services and AirGroup Architecture
For a list of supported Bonjour services, see AirGroup Services on page 260.
DLNA UPnP Support
In addition to the mDNS protocol, IAPs now support Universal Plug and Play (UPnP) and DLNA (Digital Living
Network Alliance) enabled devices. DLNA is a network standard derived from UPnP, which enables devices to
discover the services available in a network. DLNA also provides the ability to share data between the Windows or
Android based multimedia devices. All the features and policies applicable to mDNS are extended to DLNA to
ensure full interoperability between compliant devices.
In a UPnP based scenario, the following types of devices are available in a network:
l Controlled devices (servers)
l Control points (clients)
When a controlled device joins a network and acquires IP address, it multicasts a number of discovery messages
advertising itself, its embedded devices and services. On the other hand, when a control point joins a network, it may
multicast a search discovery message searching for interesting devices and services. The devices listening on the
multicast address respond if they match the search criteria in the search message.
In a single AP network, the IAP maintains a cache table containing the list of discovered services in the network.
The IAP also enforces native policies such as disallowing roles and VLANs and the policies defined on CPPM to
determine the devices or services that are allowed and can be discovered in the network. Whenever a search
request comes, the AP looks up its cache table and filters based on configured policies and then builds a search
response and unicasts it to the requesting device.
In an IAP cluster, the IAPs maintain a list of associated UPnP devices and allow the discovery of the associated
devices.
The following figure illustrates DLNAUPnPServices and AirGroup Architecture.
Aruba Instant 6.4.0.2-4.1 | User Guide Services | 258