Cisco Cisco 4402 Wireless LAN Controller

Radar-free Coordinated Sector–Access point 
notifies parent when radar is detected on the 
channel so an alternative channel can be 
employed by the sector.

X

X

–

1

Dynamic Frequency Selection–Alternative 
channel is selected when radar is detected in 
regulated bands.

–

–

–

1

Synchronized Channel Change–Parent advises 
children of intended channel change.

X

X

–

Reliable Link Layer, Extended 
Retries–Transmissions that do not succeed will 
extend the number of retry attempts in an effort to 
improve reliability.

X

X

X

Reliable Link Layer, Secondary Backhaul 
Radio–A secondary backhaul radio is utilized as 
a temporary path for traffic that cannot be sent on 
the primary backhaul due to intermittent 
interference.

–

X

–

Passive Beaconing–Log messages from an access 
point that cannot connect are relayed through 
other access points to the controller.

X

X

–

Ethernet Bridging–Traffic is bridged from hosts 
connected to a wired port.

X

X

X

Containment of Bridged Multicast 
Traffic–Multicast traffic (e.g. video camera 
broadcasts) from a MAP Ethernet port is 
contained on a RAP Ethernet network and no 
forwarding occurs (In mode Multicast). This 
ensures that: (1) Non-LWAPP multicasts received 
by the RAP are not transmitted back to the MAP 
Ethernet networks within the mesh network (their 
point of origin). (2) MAP-to-MAP multicasts do 
not occur because they are filtered out.

X

X

–

Universal Access–Radio used for backhaul traffic 
provides access for client traffic

X

X

–

Support for Workgroup Bridges–Allows 
multiple wired hosts to connect to the wireless 
network through a workgroup bridge.

X

X

–

Multiple Queues for Backhaul Traffic–Extends 
client traffic prioritization to the backhaul traffic.

X

X

X

Static Call Admission Control (CAC)–Ensures 
sufficient bandwidth is available in a mesh sector 
before serving new T-SPEC client call requests.

–

X

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