Quality of service (QoS) ensures that different types of network traffic receive priority levels of service depending on their requirements. As users demand higher data rates for streaming video and music, networks and devices must improve to handle this increased traffic. QoS grades different types of traffic so that critical applications like phone calls have minimal delays while allowing networks to appear working well to users even if some pages take slightly longer to load. Routers prioritize packages marked for different traffic to optimize resource usage, a necessity for network engineers. QoS has become a compulsory decision for networks to meet rising demands without wasting limited resources.

1. QOS
QUALITY OF SERVICE
A COMPULSORY DECISION
Alejandro Baranda Castrillo

2. QOS
• Our phones need
higher bit rates
• Nets and devices
have to improve
• We demand video
and music streaming

3. THERE ARE TECHNOLOGICAL
LIMITS
PROBLEM

4. QOS
GRADES OF PRIORITY DEPENDING
ON THE KIND OF TRAFFIC
• Our phones need
higher bit rates
• Nets and devices
have to improve
• We want video and
music streaming

5. HIDE WEAK POINTS OF THE NET TO THE
USER
MAKE USERS THINK THAT IT WORKS QUITE
WELL
AIM

6. IF WHEN A USER…
HOW CAN WE DO IT?
• Make an IP phone
call, there are no
delays
• Watch a video, it
doesn´t stop after
having started
• Net works well!

7. IT DOES NOT MATTER IF A WEB PAGE NEEDS
0.8 OR 1.2 SECONDS TO BE SHOWN
HOWEVER

8. SO
PACKAGES MUST BE MARKED, AND ROUTERS
SHOULD DECIDE WHAT PACKAGE PASS FIRST

9. IT IS CLOSE TO THE IDEA OF STREET LIGHTS
AND SPEED LIMITS IN DIFFERENT ROADS

10. QUALITY OF SERVICE MUST BE IMPLEMENTED
IN ORDER TO AVOID WASTING RESOURCES
WHICH IS SOMETHING
CRITICAL TO AN ENGINEER

11. QOS
QUALITY OF SERVICE
A COMPULSORY DECISION
Alejandro Baranda Castrillo