IP Precedence and DSCP Values

Lessons Discussion
39

Dear Rene,
Your topic make me better, I’m still confusing some more:

  1. What is the relationship between Class-Selector PHB and AF/EF PHB? do you have to choose one of them when you talk to device?
  2. When we use Class-Selector PHB, we only use three first bits of DS field. Am I right?
  3. AF PHB same as CS1 to CS4 but AF PHB uses more 3 bits for Drop Probability?
  4. EF PHB same as CS5, CS6, CS7? If that, no have any priority among CS5 and CS6 and CS7?