Computer Networking · Advanced level

Advanced level · Module 4: Monitoring and Troubleshooting Complex Networks · Lesson 1 of 4

Network Monitoring

Know about problems before users call.

In this lesson you will

  • Set up device and link monitoring
  • Use baselines and alerts

Key concepts

SNMPsysloguptime and utilisationbaselines and alerts

The lesson

Monitoring tools poll devices with SNMP for status and utilisation and receive syslog messages about events.

A baseline records normal levels — link use, errors, latency — so unusual changes stand out.

Alert on what matters: links down, high utilisation, errors and device failures.

Step by step

  1. Enable SNMP and syslog.
  2. Add devices to a monitoring tool.
  3. Record a baseline.
  4. Configure alerts.

Practice activity

Set up monitoring for the lab network.

Expected result: Devices monitored with baselines and alerts.

Check your understanding

  1. What does SNMP provide?

    Show answer

    Device status and performance information.

  2. Why record a baseline?

    Show answer

    So unusual changes stand out.

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.