Computer Networking · Advanced level

Advanced level · Module 4 of 6 · 24 guided hours

Monitoring and Troubleshooting Complex Networks

Watch network health and solve difficult problems systematically.

Learning objectives

  • Monitor devices and links
  • Analyse traffic with Wireshark
  • Apply a structured troubleshooting method
  • Manage changes and documentation

Topics

  • SNMP and monitoring tools
  • syslog
  • Wireshark
  • structured troubleshooting
  • baselines
  • change management

Lessons

  1. Lesson 1 Network Monitoring

    Know about problems before users call.

    SNMPsysloguptime and utilisationbaselines and alerts

  2. Lesson 2 Packet Analysis with Wireshark

    See exactly what is happening on the network.

    packet capturedisplay filtersTCP handshakeDNS and DHCP in captures

  3. Lesson 3 Structured Troubleshooting

    Solve complex problems with a repeatable method.

    define the problemhypotheses and testsOSI approachesverify and document

  4. Lesson 4 Change Management and Documentation

    Make changes safely and keep records current.

    change requestsrollback plansmaintenance windowsdocumentation

Practical activity

Set up monitoring for the lab network, capture and analyse traffic with Wireshark, and solve three multi-layer faults using a structured method.

Expected outcomes

  • Proactive monitoring
  • Systematic fault resolution

Assessment

Monitoring set-up, packet analysis and troubleshooting reports assessed.

Taught live by an instructor — online or in person. Free course lessons are for self-study and do not lead to a certificate — see registration options.