Why Study with PlanetCert?
The Latest Questions
Practice questions and exam topics aligned with the current exam objectives.
Detailed Explanations
Go beyond the answer. Master the material with comprehensive learning and professional explanations for every concept.
AI-Powered Insights
Personalized preparation guidance that adapts to your performance and identifies weak spots automatically.
Exam Information
Official specifications published by Cisco
Exam Format
90 min
55-65
825 out of 1000
Professional
Registration
$300 USD
Pearson VUE or online proctoring
English, Japanese
Validity
3 years
Pass any Expert-level exam; Pass any two Professional concentration exams; Pass the core exam (350-401 ENCOR) and one concentration exam
300-420 Exam Topics and Domains
300-420 is organized into 5 weighted domains. Expect to work with BGP, Cisco SD-WAN, DNA Center, EIGRP, and more.
1
Advanced Addressing and Routing Solutions
25%
Create structured addressing plans for IPv4 and IPv6
- VLSM
- CIDR
- IPv6 addressing
- Subnetting
- Summarization
- Address planning best practices
- Subnet calculations
- IPv6 address types
- IPv4
- IPv6
- Design hierarchical IP addressing schemes
- Implement VLSM and CIDR effectively
- Plan IPv6 addressing strategies
- Create addressing plans that support summarization
Create stable, secure, and scalable routing designs for IS-IS
- IS-IS levels
- NET addressing
- IS-IS metrics
- Route leaking
- IS-IS design principles
- Level 1/Level 2 hierarchy
- IS-IS authentication
IS-IS
- Design IS-IS routing for enterprise networks
- Implement IS-IS security features
- Scale IS-IS deployments
Create stable, secure, and scalable routing designs for EIGRP
- EIGRP metrics
- Stub routing
- Route summarization
- EIGRP authentication
- EIGRP design best practices
- Stub router configuration
- EIGRP load balancing
- EIGRP
- Named EIGRP
- Design EIGRP networks for stability
- Implement EIGRP security
- Scale EIGRP deployments
Create stable, secure, and scalable routing designs for OSPF
- OSPF areas
- LSA types
- OSPF authentication
- Stub areas
- Area design
- LSA propagation
- OSPF optimization techniques
- OSPFv2
- OSPFv3
- Design multi-area OSPF networks
- Implement OSPF security features
- Optimize OSPF convergence
Create stable, secure, and scalable routing designs for BGP
Address familiesBasic route filteringAttributes for path preferenceRoute reflectorsLoad sharing
- Design BGP networks for internet connectivity
- Implement BGP policies and filtering
- Scale BGP using route reflectors
Determine IPv6 migration strategies
Overlay (tunneling)Native (dual-stacking)Boundaries (IPv4/IPv6 translations)
- Plan IPv6 migration strategies
- Implement transition mechanisms
- Design coexistence solutions
2
Advanced Enterprise Campus Networks
25%
Design campus networks for high availability
First Hop Redundancy ProtocolsPlatform abstraction techniquesGraceful restartBFD
- Design redundant campus architectures
- Implement fast convergence mechanisms
- Plan for non-stop operations
Design campus Layer 2 infrastructures
STP scalabilityFast convergenceLoop-free technologiesPoE and WoL
- Design scalable Layer 2 networks
- Implement loop prevention mechanisms
- Plan PoE deployments
Design multicampus Layer 3 infrastructures
ConvergenceLoad sharingRoute summarizationRoute filteringVRFsOptimal topologiesRedistribution
- Design multi-site Layer 3 networks
- Implement routing policies
- Optimize routing convergence
Describe SD-Access Architecture
- Underlay
- Overlay
- LISP
- VXLAN
- Control plane
- Data plane
- SD-Access architecture
- Fabric components
- Automation
- SD-Access
- DNA Center
- Understand SD-Access components
- Describe underlay and overlay networks
- Explain control and data plane separation
Describe SD-Access fabric design considerations
- Fabric design
- Border design
- Segmentation
- Virtual networks
- Multicast in fabric
- Fabric sizing
- Border placement
- Wireless integration
- SD-Access
- DNA Center
- Design SD-Access fabrics
- Plan for wired and wireless integration
- Implement segmentation and virtual networks
3
WAN for Enterprise Networks
20%
Compare WAN connectivity options
Layer 2 VPNMPLS Layer 3 VPNMetro EthernetDWDM4G/5GSD-WAN customer edge
- Compare WAN technologies
- Select appropriate WAN solutions
- Design hybrid WAN architectures
Design site-to-site VPN
Dynamic Multipoint VPN (DMVPN)Layer 2 VPNMPLS Layer 3 VPNIPsecGeneric Routing Encapsulation (GRE)Group Encrypted Transport VPN (GET VPN)
- Design secure site-to-site connectivity
- Select appropriate VPN technologies
- Implement VPN redundancy
Design high availability for enterprise WAN
Single-homedMultihomedBackup connectivityFailover
- Design resilient WAN architectures
- Implement WAN redundancy
- Plan for failover scenarios
Describe Cisco SD-WAN Architecture
- vManage
- vSmart
- vBond
- vEdge
- Orchestration
- Control plane
- Data plane
- SD-WAN components
- Controller roles
- Onboarding process
Cisco SD-WAN
- Understand SD-WAN components
- Describe orchestration and management planes
- Explain SD-WAN security architecture
Describe Cisco SD-WAN design considerations
- Control plane design
- Overlay design
- High availability
- Scalability
- QoS over SD-WAN
- SD-WAN sizing
- Controller placement
- Policy design
Cisco SD-WAN
- Design SD-WAN overlays
- Plan SD-WAN control plane
- Implement SD-WAN QoS and security
4
Network Services
20%
Select appropriate QoS strategies
- DiffServ
- IntServ
- RSVP
- Per-hop behavior
- QoS model selection
- DiffServ vs IntServ
QoS
- Compare DiffServ and IntServ models
- Select QoS strategy based on requirements
- Design QoS for different traffic types
Design end-to-end QoS policies
Classification and markingShapingPolicingQueuing
- Design comprehensive QoS policies
- Implement traffic management
- Configure queuing strategies
Design network management techniques
In-band vs. out-of-bandSegmented management networksPrioritizing network management traffic
- Design secure management architectures
- Implement management plane protection
- Plan management redundancy
Describe multicast routing concepts
- Source trees
- Shared trees
- RPF
- Rendezvous points
- IGMP
- PIM
- Multicast trees
- RPF checks
- RP selection
IP Multicast
- Understand multicast fundamentals
- Explain source and shared trees
- Describe RPF and rendezvous points
Design multicast services
- SSM
- PIM bidirectional
- MSDP
- Anycast RP
- SSM vs ASM
- MSDP peering
- Bidirectional PIM
Multicast services
- Design SSM deployments
- Implement PIM bidirectional
- Configure MSDP for inter-domain multicast
5
Automation
10%
Choose the correct YANG data model set
- YANG
- Data models
- Schema definition
- Model selection
- YANG structure
YANG models
- Select appropriate YANG models
- Understand model capabilities
- Match models to requirements
Differentiate between YANG models
- IETF YANG
- OpenConfig
- Cisco native YANG
- Model differences
- Vendor vs standard models
YANG models
- Compare IETF models
- Understand OpenConfig models
- Identify Cisco native models
Differentiate between NETCONF and RESTCONF
- NETCONF
- RESTCONF
- XML
- JSON
- SSH
- HTTPS
- Protocol selection
- Transport differences
- NETCONF
- RESTCONF
- Compare NETCONF and RESTCONF
- Understand protocol differences
- Select appropriate protocol
Describe model-driven telemetry impact
Periodic publicationOn-change publication
- Understand telemetry benefits
- Compare telemetry modes
- Design telemetry deployments
Compare telemetry approaches
- Dial-in
- Dial-out
- Subscriptions
- gRPC
- gNMI
- Dial-in vs dial-out
- Subscription management
Model-driven telemetry
- Differentiate dial-in and dial-out
- Understand subscription models
- Select telemetry approach
How do I earn this certification?
Passing 300-420 earns the CCNP Enterprise certification. It sits in the Enterprise track.
Current Level Exams
- 350-401 - ENCOR - Implementing and Operating Cisco Enterprise Network Core Technologies
- 300-410 - ENARSI - Implementing Cisco Enterprise Advanced Routing and Services
- 300-415 - ENSDWI - Implementing Cisco SD-WAN Solutions
- 300-425 - ENWLSD - Designing Cisco Enterprise Wireless Networks
- 300-430 - ENWLSI - Implementing Cisco Enterprise Wireless Networks
- 300-435 - ENAUTO - Automating Cisco Enterprise Solutions
Next Level Options
- CCIE Lab - CCIE Enterprise Infrastructure Lab
- CCIE Lab - CCIE Enterprise Wireless Lab
Alternative Paths
- 350-501 - SPCORService provider design skills
- 350-601 - DCCORData center design expertise
- 300-715 - SISESecurity integration with enterprise design
- 350-901 - DEVCORNetwork programmability and automation
Practice with Precision
The PlanetCert Simulator mirrors the real exam environment with authentic questions and timed pressure.
How to study for this exam?
Use the official PlanetCert Practice Test alongside the study plan below to prepare efficiently for 300-420.
Who should take this exam?
This exam is typically taken by Network Design Engineers and Network Architects.
- CCNA certification or equivalent knowledge
- 3-5 years of experience with enterprise network design
- Pass the ENCOR (350-401) exam for CCNP Enterprise