QoS (Quality of Service)

networkingadvanced
traffic managementprioritizationnetwork optimization

A set of technologies and techniques used to manage and prioritize network traffic, ensuring better performance for critical applications.

Examples

Home router QoS

Prioritize gaming console traffic over file downloads

Business network

VoIP calls get priority over email traffic

Common Misconceptions

  • QoS can't create more bandwidth - it only manages existing bandwidth
  • QoS settings vary greatly between router models

Optimization Tips

Prioritize real-time applications (gaming, VoIP)

high impact

Set bandwidth limits for non-critical devices

medium impact

Use device-based rather than application-based rules

medium impact

User Impact

Gaming

Reduces lag when others are using network

Video calls

Maintains call quality during network congestion

Streaming

Prevents buffering when network is busy

Troubleshooting

Issue: QoS not working

Solution: Verify settings match device MAC addresses

Issue: Over-restriction

Solution: Adjust bandwidth allocations, avoid too strict limits

Technical Details

Specification: Uses DSCP markings, traffic shaping, and packet scheduling