Introduction
Introduction
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What you should know
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Tools and software
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1. Physical Layer Troubleshooting
POTS failure
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Copper Ethernet failure
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Fiber interface failure
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2. Data Link and Network Layer Troubleshooting
Switching loop
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Duplicate addressing
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DNS/IP addressing issues
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Rogue DHCP
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Failed routes/routing loop
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3. Transport Layer Troubleshooting
Port already in use, netstat
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Test service connectivity, telnet/wireshark
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4. Wi-Fi Troubleshooting
Intermittent service
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5. Proactive Troubleshooting
NMS
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Probes
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