目前CCNP为笔试，一个必考核心科目和一个多选一选考科目。

核心科目为 350-401 ENCOR: Implementing Cisco Enterprise Network Core Technologies 同时也是CCIE的笔试内容。
选考科目有：

1. 300-410 ENARSI (Implementing Cisco Enterprise Advanced Routing and Services)：这门考试主要聚焦于企业级高级路由技术和服务的实现，涉及路由协议、策略、网络服务等。
2. 300-415 ENSDWI (Implementing Cisco SD-WAN Solutions)：专注于Cisco SD-WAN解决方案的实现，包括部署、配置、管理和监控。
3. 300-420 ENSLD (Designing Cisco Enterprise Networks)：涉及Cisco企业网络的设计，包括高级地址分配、路由策略和网络服务设计。
4. 300-425 ENWLSD (Designing Cisco Enterprise Wireless Networks)：专门针对企业无线网络设计，包括无线网络架构、设计策略和实现。
5. 300-430 ENWLSI (Implementing Cisco Enterprise Wireless Networks)：关注于企业无线网络的实现，涵盖配置、监控和故障排除。
6. 300-435 ENAUTO (Automating Cisco Enterprise Solutions)：这门课程专注于使用自动化技术和编程语言来管理和配置Cisco企业解决方案。
7. 300-440 ENCC (Designing and Implementing Cloud Connectivity)：涉及云连接的设计与实现，包括云服务的集成和网络优化。
8. 300-445 ENNA (Designing and Implementing Enterprise Network Assurance)：专注于企业网络保障的设计和实施，包括网络监控、分析和优化，是新科目，2024年5月20日上线。

后面将介绍下ENCOR 350-401: Implementing Cisco Enterprise Network Core Technologies 和 ENARSI 300-410: Implementing Cisco Enterprise Advanced Routing and Services

ENCOR 350-401: Implementing Cisco Enterprise Network Core Technologies

Architecture（15%）

1. Explain the different design principles used in an enterprise network
   • High-level enterprise network design such as 2-tier, 3-tier, fabric, and cloud
   • High availability techniques such as redundancy, FHRP, and SSO
2. Describe wireless network design principles
   • Wireless deployment models (centralized, distributed, controller-less, controller-based, cloud, remote branch)
   • Location services in a WLAN design
   • Client density
3. Explain the working principles of the Cisco SD-WAN solution
   • SD-WAN control and data planes elements
   • Benefits and limitations of SD-WAN solutions
4. Explain the working principles of the Cisco SD-Access solution
   • SD-Access control and data planes elements
   • Traditional campus interoperating with SD-Access
5. Interpret wired and wireless QoS configurations
   • QoS components
   • QoS policy
6. Describe hardware and software switching mechanisms such as CEF, CAM, TCAM, FIB, RIB, and adjacency tables

Virtualization（10%）

1. Describe device virtualization technologies
   • Hypervisor type 1 and 2
   • Virtual machine
   • Virtual switching
2. Configure and verify data path virtualization technologies
   • VRF
   • GRE and IPsec tunneling
3. Describe network virtualization concepts
   • LISP
   • VXLAN

Infrastructure（30%）

1. Layer 2
   • Troubleshoot static and dynamic 802.1q trunking protocols
   • Troubleshoot static and dynamic EtherChannels
   • Configure and verify common Spanning Tree Protocols (RSTP, MST) and Spanning Tree enhancements such as root guard and BPDU guard
2. Layer 3
   • Compare routing concepts of EIGRP and OSPF (advanced distance vector vs. link state, load balancing, path selection, path operations, metrics, and area types)
   • Configure simple OSPFv2/v3 environments, including multiple normal areas, summarization, and filtering (neighbor adjacency, point-to-point, and broadcast network types, and passive-interface)
   • Configure and verify eBGP between directly connected neighbors (best path selection algorithm and neighbor relationships)
   • Describe policy-based routing
3. Wireless
   • Describe Layer 1 concepts, such as RF power, RSSI, SNR, interference, noise, bands, channels, and wireless client devices capabilities
   • Describe AP modes and antenna types
   • Describe access point discovery and join process (discovery algorithms, WLC selection process)
   • Describe the main principles and use cases for Layer 2 and Layer 3 roaming
   • Troubleshoot WLAN configuration and wireless client connectivity issues using GUI only
   • Describe wireless segmentation with groups, profiles, and tags
4. IP Services
   • Interpret network time protocol configurations such as NTP and PTP
   • Configure NAT/PAT
   • Configure first hop redundancy protocols, such as HSRP, VRRP
   • Describe multicast protocols, such as RPF check, PIM and IGMP v2/v3

Network Assurance（10%）

1. Diagnose network problems using tools such as debugs, conditional debugs, traceroute, ping, SNMP, and syslog
2. Configure and verify Flexible NetFlow
3. Configure SPAN/RSPAN/ERSPAN
4. Configure and verify IPSLA
5. Describe Cisco DNA Center workflows to apply network configuration, monitoring, and management
6. Configure and verify NETCONF and RESTCONF

Security（20%）

1. Configure and verify device access control
   • Lines and local user authentication
   • Authentication and authorization using AAA
2. Configure and verify infrastructure security features
   • ACLs
   • CoPP
3. Describe REST API security
4. Configure and verify wireless security features
   • 802.1X
   • WebAuth
   • PSK
   • EAPOL (4-way handshake)
5. Describe the components of network security design
   • Threat defense
   • Endpoint security
   • Next-generation firewall
   • TrustSec and MACsec
   • Network access control with 802.1X, MAB, and WebAuth

Automation（15%）

1. Interpret basic Python components and scripts
2. Construct valid JSON-encoded files
3. Describe the high-level principles and benefits of a data modeling language, such as YANG
4. Describe APIs for Cisco DNA Center and vManage
5. Interpret REST API response codes and results in payload using Cisco DNA Center and RESTCONF
6. Construct an EEM applet to automate configuration, troubleshooting, or data collection
7. Compare agent vs. agentless orchestration tools, such as Chef, Puppet, Ansible, and SaltStack

ENARSI 300-410: Implementing Cisco Enterprise Advanced Routing and Services

Layer 3 Technologies (35%)

1. Troubleshoot administrative distance (all routing protocols)
2. Troubleshoot route map for any routing protocol (attributes, tagging, filtering)
3. Troubleshoot loop prevention mechanisms (filtering, tagging, split horizon, route poisoning)
4. Troubleshoot redistribution between any routing protocols or routing sources
5. Troubleshoot manual and auto-summarization with any routing protocol
6. Configure and verify policy-based routing
7. Configure and verify VRF-Lite
8. Describe Bidirectional Forwarding Detection
9. Troubleshoot EIGRP (classic and named mode; VRF and global)
   • Address families (IPv4, IPv6)
   • Neighbor relationship and authentication
   • Loop-free path selections (RD, FD, FC, successor, feasible successor, stuck in active)
   • Stubs
   • Load balancing (equal and unequal cost)
   • Metrics
10. Troubleshoot OSPF (v2/v3)
    

    Address families (IPv4, IPv6)

    Neighbor relationship and authentication

    Network types, area types, and router types

    • Point-to-point, multipoint, broadcast, nonbroadcast
    • Area type: backbone, normal, transit, stub, NSSA, totally stub
    • Internal router, backbone router, ABR, ASBR
    • Virtual link
      

      Path preference

11. Troubleshoot BGP (Internal and External, unicast, and VRF-Lite)
    • Address families (IPv4, IPv6)
    • Neighbor relationship and authentication (next-hop, mulithop, 4-byte AS, private AS, route refresh, synchronization, operation, peer group, states and timers)
    • Path preference (attributes and best-path)
    • Route reflector (excluding multiple route reflectors, confederations, dynamic peer)
    • Policies (inbound/outbound filtering, path manipulation)

VPN Technologies (20%)

1. Describe MPLS operations (LSR, LDP, label switching, LSP)
2. Describe MPLS Layer 3 VPN
3. Configure and verify DMVPN (single hub)
   • GRE/mGRE
   • NHRP
   • IPsec
   • Dynamic neighbor
   • Spoke-to-spoke

Infrastructure Security (20%)

1. Troubleshoot device security using IOS AAA (TACACS+, RADIUS, local database)
2. Troubleshoot router security features
   • IPv4 access control lists (standard, extended, time-based)
   • IPv6 traffic filter
   • Unicast reverse path forwarding (uRPF)
3. Troubleshoot control plane policing (CoPP) (Telnet, SSH, HTTP(S), SNMP, EIGRP, OSPF, BGP)
4. Describe IPv6 First Hop security features (RA guard, DHCP guard, binding table, ND inspection/snooping, source guard)

Infrastructure Services (25%)

1. Troubleshoot device management
   • Console and VTY
   • Telnet, HTTP, HTTPS, SSH, SCP
   • (T)FTP
2. Troubleshoot SNMP (v2c, v3)
3. Troubleshoot network problems using logging (local, syslog, debugs, conditional debugs, timestamps)
4. Troubleshoot IPv4 and IPv6 DHCP (DHCP client, IOS DHCP server, DHCP relay, DHCP options)
5. Troubleshoot network performance issues using IP SLA (jitter, tracking objects, delay, connectivity)
6. Troubleshoot NetFlow (v5, v9, flexible NetFlow)
7. Troubleshoot network problems using Cisco DNA Center assurance (connectivity, monitoring, device health, network health)

参考资料：
https://learningnetwork.cisco.com/s/ccnp-enterprise
https://learningnetwork.cisco.com/s/enarsi-exam-topics
https://learningnetwork.cisco.com/s/encor-exam-topics