CCNP
300-420 ENSLD
Designing Cisco Enterprise Networks
A professional ENSLD course organized by enterprise design domains, focused lessons, and embedded simulated IOS and IOS-XE validation labs.
100 lessons
64 labs
Advanced
$69 lifetime access
Course Preview
Lessons and embedded labs
1.0 Advanced Addressing and Routing Solutions 25%
1.1 Create structured addressing plans for IPv4 and IPv6
Build a Hierarchical IPv4 Plan
Exposure · 14 min
Preview
Create IPv4 Summarization Boundaries
Configuration · 24 min
Lab
Build an IPv6 Prefix Allocation Plan
Exposure · 14 min
Validate Address Growth and Aggregation
Validation · 24 min
Lab
Fix Addressing Overlap and Gaps
Troubleshooting · 24 min
Lab
1.2 Create stable, secure, and scalable routing designs for IS-IS
Choose IS-IS Levels and Boundaries
Exposure · 14 min
Design IS-IS Summarization Points
Configuration · 24 min
Lab
Validate IS-IS Adjacency and Database Scope
Validation · 24 min
Lab
Troubleshoot IS-IS Design Instability
Troubleshooting · 24 min
Lab
1.3 Create stable, secure, and scalable routing designs for EIGRP
Choose an EIGRP Design Model
Exposure · 14 min
Design EIGRP Stub and Summary Boundaries
Configuration · 24 min
Lab
Validate EIGRP Query Containment
Validation · 24 min
Lab
Troubleshoot EIGRP Design Convergence
Troubleshooting · 24 min
Lab
1.4 Create stable, secure, and scalable routing designs for OSPF
Choose OSPF Areas and Router Roles
Exposure · 14 min
Design OSPF Summaries and Filters
Configuration · 24 min
Lab
Validate OSPF Area Behavior
Validation · 24 min
Lab
Troubleshoot OSPF Design Drift
Troubleshooting · 24 min
Lab
1.5 Create stable, secure, and scalable routing designs for BGP
Choose BGP Address Families
Exposure · 14 min
Design BGP Route Filtering
Configuration · 24 min
Lab
Validate BGP Path Attribute Decisions
Validation · 24 min
Lab
Design Route Reflector Clusters
Configuration · 24 min
Lab
Compare Confederations and Route Reflection
Exposure · 14 min
Validate BGP Load Sharing Choices
Validation · 24 min
Lab
Troubleshoot BGP Scaling Choices
Troubleshooting · 24 min
Lab
2.0 Advanced Enterprise Campus Networks 25%
2.1 Design campus networks for high availability
Design First-Hop Redundancy
Exposure · 14 min
Preview
Build an FHRP Availability Plan
Configuration · 24 min
Lab
Validate Gateway Failover Behavior
Validation · 24 min
Lab
Choose Platform Redundancy Features
Exposure · 14 min
Validate BFD and Graceful Restart Signals
Validation · 24 min
Lab
Troubleshoot Campus HA Gaps
Troubleshooting · 24 min
Lab
2.2 Design campus Layer 2 infrastructures
Design a Loop-Free Layer 2 Topology
Exposure · 14 min
Build STP Root and Protection Choices
Configuration · 24 min
Lab
Validate Fast Convergence Features
Validation · 24 min
Lab
Plan PoE and Wake-on-LAN Support
Exposure · 14 min
Design Layer 2 Security Boundaries
Configuration · 24 min
Lab
Troubleshoot Layer 2 Design Risk
Troubleshooting · 24 min
Lab
2.3 Design multicampus Layer 3 infrastructures
Choose a Multicampus Layer 3 Topology
Exposure · 14 min
Design Summaries and Route Filters
Configuration · 24 min
Lab
Validate Campus Load Sharing
Validation · 24 min
Lab
Design VRF Segmentation Between Sites
Configuration · 24 min
Lab
Validate Redistribution Boundaries
Validation · 24 min
Lab
Troubleshoot Multicampus Route Leaks
Troubleshooting · 24 min
Lab
2.4 Describe SD-Access Architecture
Map SD-Access Fabric Roles
Exposure · 14 min
Explain SD-Access Control and Data Planes
Exposure · 14 min
Validate SD-Access Policy Boundaries
Validation · 14 min
Troubleshoot Fabric Role Mismatches
Troubleshooting · 14 min
2.5 Describe SD-Access fabric design considerations
Choose SD-Access Sites and Transit
Exposure · 14 min
Design Fabric Segmentation
Configuration · 24 min
Lab
Validate Fabric Scale and Migration
Validation · 24 min
Lab
Troubleshoot Fabric Boundary Choices
Troubleshooting · 24 min
Lab
Plan Brownfield Fabric Adoption
Exposure · 14 min
3.0 WAN for Enterprise Networks 20%
3.1 Describe WAN connectivity options
Compare Enterprise WAN Options
Exposure · 14 min
Preview
Choose MPLS and Metro Ethernet Designs
Exposure · 14 min
Design Wireless WAN Backup
Configuration · 24 min
Lab
Validate WAN Transport Fit
Validation · 24 min
Lab
Troubleshoot WAN Option Mismatch
Troubleshooting · 24 min
Lab
3.2 Design site-to-site VPN
Choose a Site-to-Site VPN Model
Exposure · 14 min
Design DMVPN and GRE Boundaries
Configuration · 24 min
Lab
Design IPsec and GET VPN Protection
Configuration · 24 min
Lab
Validate VPN Tunnel Evidence
Validation · 24 min
Lab
Troubleshoot VPN Design Gaps
Troubleshooting · 24 min
Lab
Compare Layer 2 and Layer 3 VPN Designs
Exposure · 14 min
3.3 Design high availability for enterprise WAN
Choose Single-Homed and Multihomed WAN Designs
Exposure · 14 min
Design WAN Failover Paths
Configuration · 24 min
Lab
Validate WAN Failover Decisions
Validation · 24 min
Lab
Troubleshoot WAN Failover Risk
Troubleshooting · 24 min
Lab
3.4 Describe Cisco SD-WAN architecture
Map Cisco SD-WAN Components
Exposure · 14 min
Validate SD-WAN Control Connections
Validation · 24 min
Lab
3.5 Describe Cisco SD-WAN design considerations
Design SD-WAN Segmentation and Policy
Exposure · 14 min
Validate SD-WAN Transport Independence
Validation · 24 min
Lab
Troubleshoot SD-WAN Design Assumptions
Troubleshooting · 24 min
Lab
4.0 Network Services 20%
4.1 Select QoS strategies
Choose QoS Strategy by Application
Exposure · 14 min
Preview
Validate QoS Trust Boundaries
Validation · 24 min
Lab
4.2 Design end-to-end QoS policies
Design Classification and Marking
Configuration · 24 min
Lab
Design Shaping and Policing
Configuration · 24 min
Lab
Design Queuing for Congestion
Configuration · 24 min
Lab
Validate End-to-End QoS Policy
Validation · 24 min
Lab
Troubleshoot QoS Policy Mismatches
Troubleshooting · 24 min
Lab
4.3 Design network management techniques
Choose In-Band or Out-of-Band Management
Exposure · 14 min
Design Segmented Management Access
Configuration · 24 min
Lab
Validate Management Plane Reachability
Validation · 24 min
Lab
4.4 Describe multicast routing concepts
Explain Multicast Forwarding Logic
Exposure · 14 min
Choose Rendezvous Point Models
Exposure · 14 min
Validate Multicast Control State
Validation · 24 min
Lab
5.0 Automation and Artificial Intelligence 10%
5.1 Differentiate IETF, OpenConfig, and Cisco YANG models
Compare Common YANG Model Families
Exposure · 14 min
Preview
Choose the Right YANG Model
Validation · 24 min
Lab
5.2 Differentiate NETCONF and RESTCONF
Compare NETCONF and RESTCONF Workflows
Exposure · 14 min
Validate Model-Driven Management Access
Validation · 24 min
Lab
5.3 Describe model-driven telemetry, GRPC, and GNMI
Explain Periodic and On-Change Telemetry
Exposure · 14 min
Validate Telemetry Subscription Choices
Validation · 24 min
Lab
Explain gRPC and gNMI Transport Roles
Exposure · 14 min
5.4 Describe cloud connectivity options and cloud-based services models
Choose Cloud Connectivity Patterns
Exposure · 14 min
Validate Cloud Edge Design Choices
Validation · 24 min
Lab
Compare Cloud Service Models
Exposure · 14 min