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WAN Availability and QoS

Chapter Description

In this sample chapter from CCNP Enterprise Design ENSLD 300-420 Official Cert Guide: Designing Cisco Enterprise Networks, you will review WAN methodologies and WAN availability with deployment models using MPLS, hybrid, and Internet designs. It also covers backup connectivity, failover designs, QoS strategies, and designing end-to-end QoS policies.

References and Recommended Readings

RFC 1990: The PPP Multilink Protocol, https://tools.ietf.org/html/rfc1990.

Cisco, “Campus QoS Design Simplified,” https://www.ciscolive.com/c/dam/r/ciscolive/emea/docs/2018/pdf/BRKCRS-2501.pdf.

isco, “Cisco IOS Quality of Service Solutions Configuration Guide Library, Cisco IOS Release 15M&T,” http://www.cisco.com/c/en/us/td/docs/ios-xml/ios/qos/config_library/15-mt/qos-15-mt-library.html.

Cisco, “DSCP and Precedence Values,” https://www.cisco.com/c/en/us/td/docs/switches/datacenter/nexus1000/sw/4_0/qos/configuration/guide/nexus1000v_qos/qos_6dscp_val.pdf.

Cisco, “Highly Available Wide Area Network Design,” https://www.ciscolive.com/c/dam/r/ciscolive/us/docs/2019/pdf/BRKRST-2042.pdf.

Cisco, “Module 4: Enterprise Network Design,” Designing for Cisco Internetwork Solution Course (DESGN) v3.0.

Wikipedia, “LTE: LTE (telecommunications),” en.wikipedia.org/wiki/LTE_(telecommunication).

Exam Preparation Tasks

As mentioned in the section “How to Use This Book” in the Introduction, you have a couple of choices for exam preparation: the exercises here, Chapter 13, “Final Preparation,” and the exam simulation questions on the companion website.

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