Cisco Systems DL-2159-05 manual Require Use of Radio Firmware, Ethernet Encapsulation Transform

Chapter 3 Radio Configuration and Basic Settings

Radio Configuration

A Cisco Aironet Workgroup Bridge provides a wireless LAN connection for up to eight Ethernet-enabled devices. Refer to the “Overview” section on page 1-2 of the Cisco Aironet Workgroup Bridge Software Configuration Guide for a description of workgroup bridges.

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.

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 via 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

This link takes you to the Quality of Service Setup page. The settings on this page are discussed in the “QoS Configuration” section on page 5-10.

VLAN Setup Link

This link takes you to the VLAN Setup page. The settings on this page are discussed in Chapter 4, “Configuring VLANs.”

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-flipattacks. During a bit-flip attack, an intruder intercepts an encrypted message, alters it slightly, and retransmits it, and the receiver accepts the retransmitted message as legitimate. The MIC, implemented on both the access point and all associated client devices, adds a few bytes to each packet to make the packets tamper-proof. Select MMH from the pull-down menu and click Apply to enable MIC.

Note MIC takes effect only when the Use Aironet Extensions setting on the AP Radio Advanced page is set to yes and WEP is enabled and set to full encryption.

Note When you enable MIC, only MIC-capable client devices can communicate with the access point.

Cisco Aironet 1200 Seres Access Point Software Configuration Guide

3-20 OL-2159-05