Cisco Cisco Aironet 350 Mini-PCI Wireless LAN Client Adapter Design Guide
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Enterprise Mobility 4.1 Design Guide
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Chapter 2 Cisco Unified Wireless Technology and Architecture
LWAPP Overview
Figure 2-2
Split MAC Concept
The simple timing-dependent operations are generally managed locally on the LWAPP AP, while more
complex, less time-dependent operations are managed on the WLC.
complex, less time-dependent operations are managed on the WLC.
For example, the LWAPP AP handles the following:
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Frame exchange handshake between a client and AP
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Transmission of beacon frames
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Buffering and transmission of frames for clients in power save mode
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Response to probe request frames from clients; the probe requests are also sent to the WLC for
processing
processing
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Forwarding notification of received probe requests to the WLC
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Provision of real-time signal quality information to the switch with every received frame
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Monitoring each of the radio channels for noise, interference, and other WLANs
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Monitoring for the presence of other APs
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Encryption and decryption of 802.11 frames
(B) APs combined into an ESS
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APP
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Network
(C) LWAPP Split-MAC ESS
LWAPP
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(A) Single AP