Verifying Network Service
Diagnosing Low-Level Network Problems
11-19
11
Table 11-2. Diagnosing Low-Level Network Problems (cont.)
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Duplex mismatch on the network.
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Too many stations within the collision domain.
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Faulty hub, switch, NIC, or other device.
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Cabling is too long.
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Cabling is too long.
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Faulty cabling (such as intermittent wiring faults, cabling of the wrong category, or poor quality cabling)
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Faulty or marginal network interface card (NIC).
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Faulty or misconfigured hardware or software.
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Electrical noise source near cabling. Use the impulse noise test to check for noise. See page 3-34.
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Duplex mismatch on the network.
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Bad grounding for network components.
Faulty or misconfigured hardware or software.
Collision rate averaging above 5 %
Errors detected (any rate above 0 %)
Broadcast rate too high (acceptable rates vary among networks)
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