Data Sheet
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capacity than is available with solutions that use only a single radio. When more capacity is
needed, additional sectors can be enabled—for example, by provisioning a network connection to
additional access points. The mesh dynamically re-optimizes itself when this is done
Zero-Touch Configuration
Using the Cisco Lightweight Access Point Protocol (LWAPP) features, the Cisco Aironet 1522
mesh access point can discover its LWAPP controller and automatically download the correct
configuration and software for its role in the wireless mesh network.
Cisco Adaptive Wireless Path Protocol (AWPP)
Wireless mesh networks have unique features and requirements, and to address these features
and requirements Cisco has built a new protocol that allows each node to determine its neighbor
or parent intelligently, choosing the optimal path toward the controller. Unlike traditional routing
protocols, AWPP takes RF details into account.
AWPP automatically determines the best path back to the LWAPP controller by calculating the
cost of each path in terms of signal strength and number of hops. After the path is established,
AWPP continuously monitors the best path conditions and changes routes if necessarily to
optimize performance. AWPP also performs a smoothing function by signaling condition
information to ensure that the ephemeral nature of RF environments does not impact network
stability.
Robust Embedded Security
A core component of the Cisco Unified Wireless Solution is the use of X.509 certificates and AES
encryption for LWAPP transactions. This X.509 and AES encryption is embedded into the wireless
mesh solution with LWAPP transactions and by AES encrypting all traffic between mesh nodes.
The complete packet path is from the Cisco controller to the access points and eventually to the
users. The controller encapsulates user packets and forwards them to the correct roof top access
point (RAP) over Ethernet. Roof top access point has a wired connection to the back haul and it
wirelessly connect mesh access points(MAPs) at locations without a wired connection. RAP then
encrypts the user data packets and transfers them over the backhaul. Data packets may travel
through multiple mesh access points before reaching the destination MAP. After receiving the
encrypted user data, the destination MAP decrypts them and sends them over the air to the client
using the encryption method specified by the client.
For mutual authentication, Extensible Authentication Protocol / Pre-Shared Key (EAP / PSK) is
now supported between the mesh access point nodes.
Seamless Mobility
The same seamless mobility features delivered through the Cisco Unified Wireless Solution are
delivered in the Cisco Outdoor Wireless Networking solution. Users can seamlessly roam in
outdoor environments between the various Cisco Aironet 1520 mesh access points at different
locations. If there is a Cisco indoor wireless network infrastructure, the user can also roam
between the indoor and outdoor environment.
Layer 2 or Layer 3 Network Operation
Just as the Cisco Unified Wireless Network solution allows the LWAPP access points to
communicate with the controller via a Layer 2 (L2) or Layer 3 (L3) network, this flexibility is
extended to the outdoor wireless mesh network.
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