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Network Troubleshooting

For the problem nobody has been able to close.

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Engagement
Time boxed or block hours
Typical timeline
48 hours to 3 weeks
Overview

This is the engagement for the fault that has survived three vendors and a firmware upgrade. Intermittent packet loss, asymmetric routing, MTU and fragmentation, duplex and buffer issues, DNS latency, TLS handshake failures, application timeouts blamed on the network.

I work from evidence: distributed packet capture, flow records, interface counters, control plane logs and synthetic transactions correlated on a single timeline.

You receive a root cause statement with the supporting evidence, a fix, and the monitoring needed to detect recurrence.

What you receive
01Structured diagnostic plan
02Distributed packet capture and analysis
03Flow and counter correlation timeline
04Root cause statement with evidence
05Remediation plan and implementation
06Detection rules to catch recurrence
Outcomes I hold myself to
  • Faults closed with evidence, not with a reboot
  • Vendor escalations backed by capture data
  • Recurrence detected automatically
Common questions
Can you engage remotely?+

Most diagnostics are remote. I attend in person when the fault is physical or in the access layer.

What if the root cause is not the network?+

I tell you, with the evidence. That answer is worth as much as a fix.

Technology
Wiresharktcpdumpiperf3NetFlow analyticsSynthetic probesSNMP counters
Talk it through

Send me the symptom rather than the solution. I will tell you whether this is the right service, or that you do not need one.

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nodeworksnetwork · security

Network, infrastructure and security services for organisations that cannot afford an unplanned outage. Vendor neutral, evidence based, delivered remotely or on site.

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Remote and on site · Vendor neutral · Evidence based