Home > Articles > WAN Availability and QoS

WAN Availability and QoS

Chapter Description

This sample chapter from CCNP Enterprise Design ENSLD 300-420 Official Cert Guide, 2nd Edition covers the selection and use of WAN designs in enterprise networks in addition to QoS strategies and designing end-to-end QoS policies. This chapter covers topics from the ENSLD 300-420 exam.

Exam Preparation Tasks

You have a couple of choices for exam preparation: the following review sections, Chapter 13, “Final Preparation,” and the exam practice questions on the companion website.

Review All Key Topics

Review the most important topics in the chapter, noted with the Key Topic icon in the outer margin of the page. Table 9-9 lists these key topics and the page number on which each is found.

key_topic.jpg

Table 9-9 Key Topics for Chapter 9

Key Topic Element

Description

Page

List

WAN design methodologies

312

Table 9-2

Key Design Principles

313

Table 9-3

Application Requirements for Data, Voice, and Video Traffic

313

Table 9-4

Physical Bandwidth Comparison

314

Table 9-5

Availability Percentages

315

List

Deployment models

316

Paragraph

Single-homed MPLS WANs

317

Paragraph

Dual-homed MPLS WANs

318

Paragraph

Hybrid WANs: Layer 3 VPN with Internet tunnels

318

List

Internet for remote sites

321

List

WAN backup options

321

Paragraph

Failover

322

Paragraph

DiffServ

323

Table 9-6

DSCP Mapping Table

323

Paragraph

IntServ

324

List

Classification technologies

324

Paragraph

Shaping

325

Paragraph

Policing

325

Paragraph

Queuing

325

Table 9-7

QoS Options

325

Table 9-8

Link-Efficiency Mechanisms

327

11. Complete Tables and Lists from Memory | Next Section Previous Section

Cisco Press Promotional Mailings & Special Offers

I would like to receive exclusive offers and hear about products from Cisco Press and its family of brands. I can unsubscribe at any time.