Cisco Wireless Lans Course

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Fortunately, several key administration architectures are available for use in the enterprise. The best approach for large networks is centralized key management on encryption key servers. Encryption key servers provide for centralized creation of keys, distribution of keys, and ongoing key rotation. Key servers enable the network administrator to command the creation of RSA public/private key pairs at the client level that are required for client authentication. Copyright  2001, Cisco Systems, Inc.

That means new access points. 11b with plans to upgrade to faster 5-GHz networking in the immediate future. 11a products are at least several years away. 4-GHz frequency band where there is room for increased bandwidth. 11b specification, it is possible to double the current data rate. 22 Mbps is planned for the future. 4-GHz band to improve data rate. This pattern promises to continue, with a broader frequency band capable of supporting higher bandwidth available at 5-GHz. 11a) for equipment operating at 5-GHz that supports data rates up to 54-Mbps.

Upgrading to 5-GHz technology will be much like converting from an Ethernet network to FDDI. Existing access points may have upgradable radios (removable PC Cards), but chances are that the network interface to the wired LAN won't be able to handle the 54-Mbps data rate. That means new access points. 11b with plans to upgrade to faster 5-GHz networking in the immediate future. 11a products are at least several years away. 4-GHz frequency band where there is room for increased bandwidth. 11b specification, it is possible to double the current data rate.

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