tailieunhanh - CCNA Wireless Official Exam Certification Guide part 46

CCNA Wireless Official Exam Certification Guide part 46 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. | 422 CCNA Wireless Official Exam Certification Guide Figure 20-5 SNMP Trap Logs Using Tech Support You might also find the Tech Support Pages found at MANAGEMENT Tech Support to be of benefit. Although Cisco TAC uses most of what you do here you might find it beneficial information for troubleshooting. Crash logs which the controller maintains are created when a system fails. You cannot use most of the information found in the logs without Cisco TAC assistance. If Cisco TAC request these logs you can access them by going to MANAGEMENT Tech Support Controller Crash. Five crash dump files can be stored on a controller at any given time. APs also create a crash log file that the controller can download. Go to MANAGEMENT Tech Support AP Crash Log Get Log to retrieve it. TAC also uses the AP crash logs. Chapter 20 Troubleshooting Wireless Networks 423 Using WCS Version to Troubleshoot Clients You can use WCS to troubleshoot wireless deployments. Use the Monitor Client page to troubleshoot clients. You can see this page in Figure 20-6. When you use this tool you get a Summary page with a list of problems and corresponding solutions. The page also has a log analysis and a detailed event history. Figure 20-6 Critical Alarms You can use the alarms to troubleshoot. In the Clients Summary page click the numerous alarms in the lower left to be taken to that Alarm page. Figure 20-6 shows several critical alarms. Using the Cisco Spectrum Expert Cisco Spectrum Expert addresses the problem of RF interference in wireless networks. With Cisco Spectrum Expert you can detect classify locate and manually mitigate sources of wireless interference. The Cisco Spectrum Expert Wi-Fi is the industry-leading spectrum intelligence product for Wi-Fi networks. Cisco Spectrum Expert Wi-Fi offers complete visibility into the RF physical layer in the and 5-GHz frequencies allowing for enhanced performance security and reliability of WLAN services. 424 CCNA Wireless Official Exam .

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• chương trình Cisco