Cisco WIRELESS LAN CONTROLLER OL-17037-01 User Manual download pdf (Page 37)

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Cisco Wireless LAN Controller Configuration Guide

OL-17037-01

Chapter 7 Controlling Lightweight Access Points

Cisco Workgroup Bridges

Note See the sample WGB access point configuration in the “Sample WGB Configuration”

section on page 7-38.

• These features are supported for use with a WGB:

–

Guest N+1 redundancy

–

Local EAP

–

Open, WEP 40, WEP 128, CKIP, WPA+TKIP, WPA2+AES, LEAP, EAP-FAST, and EAP-TLS

authentication modes

• These features are not supported for use with a WGB:

–

Cisco Centralized Key Management (CCKM)

–

Hybrid REAP

–

Idle timeout

–

Web authentication

Note If a WGB associates to a web-authentication WLAN, the WGB is added to the exclusion

list, and all of the WGB wired clients are deleted.

• The WGB supports a maximum of 20 wired clients. If you have more than 20 wired clients, use a

bridge or another device.

• Wired clients connected to the WGB are not authenticated for security. Instead, the WGB is

authenticated against the access point to which it associates. Therefore, Cisco recommends that you

physically secure the wired side of the WGB.

• With Layer 3 roaming, if you plug a wired client into the WGB network after the WGB has roamed

to another controller (for example, to a foreign controller), the wired client’s IP address displays

only on the anchor controller, not on the foreign controller.

• If a wired client does not send traffic for an extended period of time, the WGB removes the client

from its bridge table, even if traffic is continuously being sent to the wired client. As a result, the

traffic flow to the wired client fails. To avoid the traffic loss, prevent the wired client from being

removed from the bridge table by configuring the aging-out timer on the WGB to a large value using

the following IOS commands on the WGB:

configure terminal

bridge bridge-group-number aging-time seconds

exit

end

where bridge-group-number is a value between 1 and 255, and seconds is a value between 10 and

1,000,000 seconds. Cisco recommends configuring the seconds parameter to a value greater than the

wired client’s idle period.

• When you delete a WGB record from the controller, all of the WGB wired clients’ records are also

deleted.

• Wired clients connected to a WGB inherit the WGB’s QoS and AAA override attributes.

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