CCVP QOS Quick Reference Sheets

QoS Basics

The mission statement of QoS could read something like “to categorize traffic and apply a policy to those traffic categories, in accordance with a QoS policy.” Specifically, QoS configuration involves the following three basic steps:

1. Determine network performance requirements for various traffic types. For example, consider the following design rules of thumb for voice, video, and data traffic:

Voice:

• No more than 150 ms of one-way delay

• No more than 30 ms of jitter

• No more than 1 percent packet loss

Video:

• No more than 150 ms of one-way delay for interactive voice applications (for example, videoconferencing)

• No more than 30 ms of jitter

• No more than 1 percent packet loss

Data:

Applications have varying delay and loss ...