Access Point Radio Internal Advanced Cont

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AWLF V3.1

■ Classify Workgroup Bridges as Network Infrastructure: Select no to allow more than 20 Cisco Aironet Workgroup Bridges to associate to the access point. The default setting, yes, limits the number of workgroup bridges that can associate to the access point to 20 or less.

Access points and bridges normally treat workgroup bridges not as client devices but as infrastructure devices, like access points or bridges. Treating a workgroup bridge as an infrastructure device means that the access point reliably delivers multicast packets, including Address Resolution Protocol (ARP) packets, to the workgroup bridge.

Note This feature is best suited for use with stationary workgroup bridges. Mobile workgroup bridges might encounter spots in the access point's coverage area where they do not receive multicast packets and lose communication with the access point even though they are still associated to it.

■ Require Use of Radio Firmware x.xx: This setting affects the firmware upgrade process when you load new firmware for the access point. Select yes to force the radio firmware to be upgraded to a firmware version compatible with the current version of the management system. Select no to exempt the current radio firmware from firmware upgrades.

© 2003, Cisco Systems, Inc. All rights re

© 2003, Cisco Systems, Inc. All rights re

■ Ethernet Encapsulation Transform: Choose 802.1H or RFC1042 to set the Ethernet encapsulation type. Data packets that are not 802.2 packets must be formatted to 802.2 using 802.1H or RFC1042. Cisco Aironet equipment uses 802.1H because it provides optimum interoperability.

— 802.1H—This default setting provides optimum performance for Cisco Aironet wireless products.

— RFC1042—Use this setting to ensure interoperability with non-Cisco Aironet wireless equipment. RFC1042 does not provide the interoperability advantages of 802.1H but is used by other manufacturers of wireless equipment.

■ Quality of Service Setup Link: Clicking on the Quality of Service (QoS) Setup link accesses the AP Radio Quality of Service page. Use this page to configure the radio's QoS setup and priorities.

■ VLAN Setup Link: Clicking the VLAN Setup link accesses the VLAN Setup page. Use this page to configure, add, edit, and remove VLANs associated with your access point.

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© 2003, Cisco Systems, Inc. All rights re

© 2003, Cisco Systems, Inc. All rights re

■ Enhanced MIC verification for WEP: This setting enables Message Integrity Check (MIC), a security feature that protects your WEP keys by preventing attacks on encrypted packets called bit-flip attacks. Select MMH from the drop-down menu and click Apply to enable MIC.

■ Temporal Key Integrity Protocol: This setting enables the temporal key integrity protocol (TKIP, or WEP key hashing). To enable WEP key hashing, chose CISCO from the drop down menu.

■ Broadcast WEP Key rotation interval (sec): This option enables broadcast key rotation by setting a key rotation interval. To enable broadcast key rotation, enter the rotation interval in seconds in the Broadcast WEP Key rotation interval entry field. If you enter 900, for example, the access point sends a new broadcast WEP key to all associated client devices every 15 minutes. To disable broadcast WEP key rotation, enter 0.

Note When you enable broadcast key rotation, only wireless client devices using LEAP or EAP-

TLS authentication can use the access point. Client devices using static WEP (with open, shared key, or EAP-MD5 authentication) cannot use the access point when you enable broadcast key rotation.

■ Advanced Primary SSID Setup: Go to this link to configure 802.11 authentication, EAP, Unicast address filters, and the maximum number of associations for the radio's primary SSID.

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© 2003, Cisco Systems, Inc. All rights re

© 2003, Cisco Systems, Inc. All rights re

■ Specified Access Points: You use these fields to set up a chain of repeater access points. Repeater access points function best when they associate with specific access points connected to the wired LAN. If this access point is a repeater, type the MAC address of one or more root-unit access points with which you want this access point to associate. With MAC addresses in these fields, the repeater access point always tries to associate with the specified access points instead of with other less-efficient access points.

■ Radio Modulation: Select Standard or MOK for the radio modulation the access point uses. Chose from the following values:

— Standard—This default setting is the modulation type specified in IEEE 802.11, the wireless standard published by the Institute of Electrical and Electronics Engineers (IEEE) Standards Association.

— MOK—This modulation was used before the IEEE finished the high-speed 802.11 standard and may still be in use in older wireless networks.

■ Radio Preamble: The radio preamble is a section of data at the head of a packet that contains information the access point and client devices need when sending and receiving packets. The drop-down menu allows you to select a long or short radio preamble:

— Long—A long preamble ensures compatibility between the access point and all early models of Cisco Aironet Wireless LAN Adapters (PC4800 and PC4800A).

— Short—A short preamble improves throughput performance. Cisco Aironet's Wireless LAN Adapter supports short preambles. Early models of Cisco Aironet's Wireless LAN Adapter (PC4800 and PC4800A) require long preambles.

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