Руководство по эксплуатации Oxygen ATM Switch 78-6896-01

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CHAPTER 2
Troubleshooting Tools
This chapter describes the tools available to assist you in troubleshooting your ATM switch router and
contains the following sections:
• Using Diagnostic Commands
• Third-Party Troubleshooting Tools
Using Diagnostic Commands
You can use the show, debug, ping, and traceroute commands to monitor and troubleshoot your
internetwork.
show Commands
You can use the show commands to perform many functions:
• Monitor switch router behavior during initial installation
• Mo

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Chapter 2 Troubleshooting Tools Using Diagnostic Commands Command Purpose show startup-config Displays the switch router configuration stored in nonvolatile RAM (NVRAM). show flash Displays the layout and contents of Flash memory. show buffers Displays statistics for the buffer pools on the switch router. show memory Shows statistics about the switch router memory, including free pool statistics. show processes Displays information about the active processes on the switch router. show stacks Dis

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Chapter 2 Troubleshooting Tools Third-Party Troubleshooting Tools Use the ping command when the network is functioning properly to see how the command works. When you are troubleshooting, you can see the difference between normal and abnormal operation. For detailed information about using the ping and extended ping commands, refer to the Configuration Fundamentals Command Reference publication. traceroute Commands The traceroute user EXEC command discovers the routes packets follow when traveli

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Chapter 2 Troubleshooting Tools Third-Party Troubleshooting Tools Volt-Ohm Meters, Digital Multimeters, and Cable Testers Volt-ohm meters and digital multimeters measure parameters such as AC and DC voltage, current, resistance, capacitance, and cable continuity. They check physical connectivity. Using cable testers (scanners), you can also check physical connectivity. Cable testers are available for foil twisted-pair (FTP), unshielded twisted-pair (UTP), 10BaseT, and coaxial and twinax cables.

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Chapter 2 Troubleshooting Tools Third-Party Troubleshooting Tools Network Analyzers To accurately troubleshoot your ATM network, you should have the following analyzers: • Simple cell generators and analyzers to test high-speed ATM and Broadband Integrated Services Digital Network (BISDN) transmission and protocols. • Signaling generators to test ATM equipment, service installation, and the interworking of broadband services. They help manage the performance of broadband networks, and guarantee

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Chapter 2 Troubleshooting Tools Third-Party Troubleshooting Tools ATM Switch Router Troubleshooting Guide 2-6 78-6896-01