Summarize how the token buckets and WFQs can be used together to provide policin

Question

Summarize how the token buckets and WFQs can be used together to provide policing mechanisms.

Explanation / Answer

Engineering design experiments. Work out / study the mechanisms to provide different levels of services in the network. We are equipped with the basic building blocks. Work out the two variants of QoS networks. Two important techniques: Soft-state Dynamic packet state IntServ: Motivation is to provide end-to-end service guarantee. 1. fine-grained, per flow service guarantee 2. end-to-end service guarantee Build blocks: 1. Routers: scheduling algorithms and buffer management policies 2. Applications: flowspecs 3. From applications to routers: signalling 4. From routers to applications: admission control Service classes in IntServ: Specifies service interfaces. doesnot say how to implement it. First present the three service classes, and then describe the scheduling algorithm, admission control decisions. Clark, Shenker & Zhang's paper laid out the mechanisms to implement the service classes. 1. Guaranteed service it provides a client firm guarantees: guaranteed bandwidth and bounded delay. scheduling: could be wfq. flowspecs: (r,b) but, in IETF specifications, it contains more fields, but less important. admission decision: req + sum of allocated

Related Questions

Navigate

• Browse (All)
• Browse S
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.