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#2 - Refer to Official Exam Guide
Commonly, the vendor offers an official exam guide for this and its other tests. These exam guides are the ideal way to understand the exam objectives in a detailed manner. For 300-420, you have the CCNP Enterprise Design ENSLD 300-420 Official Cert Guide: Designing Cisco Enterprise Networks as an option. Written by Steve Jordan and Anthony Bruno, this study guide has been recently published and is filled with relevant information about ENSLD 300-420 exam topics. Here, each chapter is packed with practical examples and relevant contexts. Plus, the systematic and logical coverage of enterprise designing concepts is noteworthy.
WAN for Enterprise Networks
This topic focuses on 20% of the overall content and validates the applicants’ competence in the following areas:
- Comparing the connectivity options for WAN, including MPLS L3 VPN, L2 VPN, 4G/5G, DWDM, Metro Ethernet, and SD-WAN customer edge;
- Designing site-to-site VPN, such as DMVPN, MPLS L3 VPN, L2 VPN, IPsec, GET VPN & GRE;
- Explaining the design considerations for Cisco SD-WAN (LAN design, control plane design, overlay design, scalability, redundancy, high availability, security design, multicast & QoS over the SD-WAN fabric).
- Explaining the architecture for Cisco SD-WAN, including management plane orchestration plan, data plane, security, control plane, provisioning, and on-boarding;
- Designing high availability for enterprise WAN, covering failover, multihomed, backup connectivity, as well as single-homed;
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Advanced Enterprise Campus Networks
This part makes up 25% of the whole content and measures the professionals’ knowledge of specific technical areas. These include the following:
- Designing the campus network for high availability, including BFD, first-hop redundancy protocols, Graceful restart, and platform abstraction methods;
- Explaining the considerations for the SD-Access fabric design for wired and wireless access. These include fabric design, overlay, border design, control plan design, segmentation, as well as scalability, multicast, virtual networks, and over-the-top & fabric for wireless.
- Explaining overlay, underlay, security, automation, wireless, control & data plan of SD-Access architecture;
- Designing the infrastructures for multicampus Layer 3 (route summarization, convergence, VRFs, load sharing, redistribution, route filtering, and optimal topologies);
- Designing the infrastructures for campus Layer 2, such as fast convergence, PoE & WoL, STP scalability, and loop-free technologies;
Cisco 300-420 Exam Topics:
| Section | Weight | Objectives |
|---|---|---|
| WAN for Enterprise Networks | 20% | -Compare WAN connectivity options
-Design site-to-site VPN
-Design high availability for enterprise WAN
-Describe Cisco SD-WAN Architecture (orchestration plane, management plane, control plane, data plane, on-boarding and provisioning, security) |
| Network Services | 20% | -Select appropriate QoS strategies to meet customer requirements (DiffServ, IntServ) -Design end-to-end QoS policies
-Design network management techniques
-Describe multicast routing concepts (source trees, shared trees, RPF, rendezvous points) |
| Advanced Enterprise Campus Networks | 25% | - Design campus networks for high availability
-Design campus Layer 2 infrastructures
-Design multicampus Layer 3 infrastructures
-Describe SD-Access Architecture (underlay, overlay, control and data plane, automation, wireless, and security) |
| Advanced Addressing and Routing Solutions | 25% | -Create structured addressing plans for IPv4 and IPv6 -Create stable, secure, and scalable routing designs for IS-IS -Create stable, secure, and scalable routing designs for EIGRP -Create stable, secure, and scalable routing designs for OSPF -Create stable, secure, and scalable routing designs for BGP
-Determine IPv6 migration strategies
|
| Automation | 10% | - Choose the correct YANG data model set based on requirements -Differentiate between IETF, Openconfig, and Cisco native YANG models -Differentiate between NETCONF and RESTCONF -Describe the impact of model-driven telemetry on the network
-Compare dial-in and dial-out approaches to model-driven telemetry |
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