TAILIEUCHUNG - CCNA Wireless Official Exam Certification Guide part 43

CCNA Wireless Official Exam Certification Guide part 43 is a best of breed Cisco® exam study guide that focuses specifically on the objectives for the CCNA® Wireless IUWNE exam. Senior instructor Brandon Carroll shares preparation hints and test-taking tips, helping you identify areas of weakness and improve both your conceptual knowledge and hands-on skills. Material is presented in a concise manner, focusing on increasing your understanding and retention of exam topics. | 392 CCNA Wireless Official Exam Certification Guide Figure 19-7 Verify the AP Upgrade Upgrading WCS Beginning in WCS version the WCS code upgrade script made it possible to upgrade the WCS while retaining the directories root password and license information. The operation is automated and simply involves downloading the install file from the Cisco website and running it on the machine on which the WCS is installed. During the install process you are informed that a previous install has been detected and you re asked to choose between upgrading and installing. Upgrading retains all the information from the previous install. If you choose the install option it will be as if WCS was not previously there in other words it s a fresh install. Managing Configurations When working in the Cisco Unified Wireless Environment you deal with a number of configuration files. You potentially have numerous controller configurations as well as AP configurations. When you re working with the controller it s a good idea to save your configuration often. Clicking the Save Configuration link can save a controller s configuration. It is found in the top-right corner of the web interface as shown in Figure 19-8. Chapter 19 Maintaining Wireless Networks 393 Figure 19-8 Save the Configuration In addition to saving the configuration to NVRAM you can back up the configuration on a remote TFTP server. Saving to a TFTP server is similar to how you upgraded the controller only this time you are moving a file in the opposite direction. The setup requires the use of TFTP server software installed on the destination computer where you want to back up the file. TFTP uses UDP port 69 so make sure that nothing in the transit path such as a firewall might block that type of traffic. If you have already upgraded from the TFTP server you probably won t have any issues. The next step is to choose COMMANDS Upload File. In the drop-down box choose Configuration. Select the option to encrypt the file is

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