300-420 ENSLD

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

1.6 Determine IPv6 migration strategies Choose an IPv6 Migration Path Exposure · 14 min Validate Dual-Stack and Tunnel Boundaries Validation · 24 min Lab Troubleshoot IPv6 Transition Breakpoints Troubleshooting · 24 min Lab

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

3.1 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

4.1 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

4.5 Design multicast services Design Multicast Service Placement Configuration · 24 min Lab Validate Multicast Service Reachability Validation · 24 min Lab Troubleshoot Multicast Design Gaps Troubleshooting · 24 min Lab

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