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Hardware Diagnostics - Troubleshooting Methodology | Network Design | Repovive

Repovive.

Network Design26 sections · 911 units44h total

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Hardware Diagnostics

Device health checks

Hardware failures cause intermittent problems that are hard to diagnose. Learn to check device health systematically.

NIC diagnostics:

Check interface counters for errors
Look for CRC errors indicating cable issues
Monitor for overruns showing buffer problems

Switch diagnostics:

show interface status
show interface errors
show environment

Warning signs:

Increasing error counts over time
Spontaneous reboots
Ports randomly going down
Slow management interface response

Replace suspect hardware before it fails completely.