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Troubleshooting, Management, Monitoring, and Diagnostics Module 11 Troubleshooting, Management, Monitoring, and Diagnostics

Overview This module will cover the basics of troubleshooting. It begins by examining a methodology that breaks down the process of troubleshooting into manageable steps. Next, a variety of tools will be introduced that are used to troubleshoot a WLAN. These tools include cable testers, sniffers, and spectrum analyzers. A brief discussion of system logging and single point of failure troubleshooting will be presented. Finally, enterprise management tools will be explored.

Learning Objectives Demonstrate proficiency using TCP/IP utilities Identify the common tools used to troubleshoot a wireless network Identify single point failures on a WLAN. Configure SNMP and Syslog logging Identify basic facts about CiscoWorks WLSE and ACAT tool. Identify facts about Wavelink Mobile Manager™ and Airwave.

Key terms Deductive Reasoning Inductive Reasoning Sniffers Spectrum Analyzer Cable Analyzer Gauss Meter Syslog SNMP WLSE

General Approach to Troubleshooting

Logic Methods

Problem Solving Model

Routed and Routing Protocols

ISO

IOS Network Management Model

IOS Network Management Model (Cont)

OSI Troubleshooting

TCP/IP and OSI Comparison

Troubleshooting Layers

TCP/IP Diagnostic Tools

Diagnostic Tools

Multimeter

Cable Meter

Hardware Sniffers Fluke Networks Berkeley Varitronics Systems

Software Sniffers http://www.personaltelco.net/index.cgi/WirelessSniffer?action=show&redirect=WirelessSniffers

Spectrum Analyzer Anritsu Tektronix

Gauss Meter

Cable and Antenna Analyzer

WLAN Troubleshooting

Firmware AP or Bridge ACU Version and NDIS Drivers

Configuration

AP and Bridge LEDs

NIC LEDs

System Message Logging

Event Log Page

Event Log Configuration Option Page

Enable and Define a Syslog Server

Configure Logging via IOS CLI

SNMP Architecture

Configure SNMP via GUI

Configure SNMP via CLI

Syslog and SNMP Applications

WLAN Management Solutions

Enterprise Network Inclusion of Wireless

Enterprise Topology with WLAN Access

Wireless LAN Challenges The lack of effective management has inhibited the growth of large-scale wireless networks due to . . . The challenge of configuring hundreds or thousands of access points Security risks opened up by mis-configurations Lack of sufficient tools for trouble shooting, performance analysis and capacity planning

CiscoWorks WLSE Product Summary Specialized application for managing the Cisco WLAN Centralized configuration of large deployments of Cisco APs Security policy and fault/performance monitoring of the Cisco WLAN infrastructure Turnkey, appliance based management solution

Key Features Centralized, template-based configuration of access points and bridges with user defined groups Access point and bridge misconfiguration alerts to minimize security vulnerabilities Proactive fault and performance monitoring of access points, bridges, LEAP server, and attached switch

Key Features (cont.) Access point utilization, summary, current & historical client association reports with XML, CSV, PDF data export Secure HTML-based UI Upper-layer NMS/OSS integration via northbound trap, SYSLOG System & User Defined Groups

Managing the WLAN with WLSE Can launch from CiscoWorks desktop or stand alone Manage to switch port (AP is attached to) Can collect SNMP information Up to 500 access points (across any IP network) Build a template

Managing the WLAN with WLSE (cont.) Verify configuration across access points Alarm for configuration change Alarm for misconfiguration Centralized template-based configuration Configuration by groups

WLSE Value Propositions Reduces WLAN total cost of ownership by saving time and resources in configuring a large number of access points and bridges Minimizes wireless LAN security vulnerabilities by providing alerts for misconfigured access points and bridges

WLSE Value Propositions (cont.) Improves wireless LAN uptime by proactively monitoring wireless LAN infrastructure and “LEAP authentication server” Helps in wireless LAN capacity planning by identifying the most utilized access points Accelerates client problem troubleshooting by generating client association reports Proactive monitoring of access points, LEAP authentication servers, and switches connected to access points is critical to improving and ensuring WLAN uptime. Faults generated by the WLSE when performance degrades and when devices become overloaded allow network engineers to proactively solve potential problems with the WLAN before end-users’ experience becomes unbearable. The WLSE identifies the most utilized access points in a group in terms of throughput and client associations. Network administrators can use these data for capacity planning, to decide where performance is adequate and where it is inadequate and to prove return on investment for current WLAN deployment and to justify further investment. Network administrators need tools to accelerate client problem troubleshooting and the WLSE provides these tools. Client problem troubleshooting is accelerated for WLSE users with current and historical client association reports.

Cisco Structured Wireless Aware Network

Cisco Aironet Configuration Administration Tool (ACAT)

ACAT Installation Options

Who is Wavelink? An industry leading developer of wireless solutions to deploy and manage wireless applications and infrastructure 10+ years experience delivering industrial-grade wireless solutions More than 40,000 installations worldwide Enterprise-class solutions for Top Fortune 1000 Companies

Mobile Manager™ Advantages Centralized management console for WLAN infrastructure Elimination of individual access point configuration requirements Manageable mechanisms for maintaining WLAN privacy and access control Proactive event response options Single interface to multi-vendor systems

Mobile Manager™ Architecture

Mobile Manager™ Components

Mobile Manager™ Positioning Multi-vendor enterprise-wide wireless LAN management Eliminates the challenges around: Initial configuration costs of large numbers of wireless access points Implementing and maintaining wireless LAN security measures Wireless asset visibility and monitoring On-going attention to updates and maintenance

Wavelink’s Solutions vs. WLSE Wireless network management for Cisco networks Monitors APs, the attached switch/router and LEAP server Identifies error conditions, sends alerts Manage up to 500 APs and bridges from a central location Provides client association reports Automatic discovery of APs and bridges with option to automatically configure Wavelink Multi-vendor enterprise-wide wireless network management Monitors APs and mobile client devices Proactively responds to error conditions with rules-based reasoning Automatically upgrades or rolls back firmware on APs or mobile client devices Manage the entire wireless network from a central location Automatic discovery of APs and bridges with automatic configure capability

Airwave The AirWave Management Platform is a network management solution specifically designed for a multi vendor wireless networks. The AirWave Management Platform provides a central console from which IT can configure and monitor its entire WLAN infrastructure, across multiple campuses. The Platform can control from 25 to 500 hardware device from manufacturers, including Cisco, ORiNOCO (Agere/Proxim), Symbol, Intel, HP, Compaq, Dell, Avaya, and 3e Technologies International.

Other Management Options SNMP management devices HP OpenView, Tivoli and NetView MIB-II enabled WLAN devices

Summary Demonstrate proficiency using TCP/IP utilities Identify the common tools used to troubleshoot a wireless network Identify single point failures on a WLAN. Configure SNMP and Syslog logging Identify basic facts about CiscoWorks WLSE and ACAT tool. Identify facts about Wavelink Mobile Manager™ and Airwave.

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