Here is the initial expanded blueprint for ENARSI! If there are changes to this document, they will be listed in the Change Log below the list. Enjoy your studies!

• 1.0 Layer 3 Technologies
  • Troubleshoot administrative distance (all routing protocols)
  • Troubleshoot route maps for any routing protocol (attributes, tagging, filtering)
  • Troubleshoot loop prevention mechanisms
    • Filtering
    • Tagging
    • Split horizon
    • Route poisoning
  • Troubleshoot redistribution between any routing protocols or routing sources
  • Troubleshoot manual and auto-summarization with any routing protocol
  • Configure and verify policy-based routing
  • Configure and verify VRF-Lite
  • Describe Bidirectional Forwarding Detection
  • Troubleshoot EIGRP (classic and named mode)
    • 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
  • 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
  • Troubleshoot BGP (Internal and External)
    • 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
    • Route reflector
    • Policies
      • Inbound/outbound filtering
      • Path manipulation
• 2.0 VPN Technologies
  • Describe MPLS operations
    • LSR
    • LDP
    • Label switching
    • LSP
  • Describe MPLS Layer 3 VPN
  • Configure and verify DMVPN (single hub)
    • GRE/mGRE
    • NHRP
    • IPsec
    • Dynamic neighbor
    • Spoke-to-spoke
• 3.0 Infrastructure Security
  • Troubleshoot device security using IOS AAA
    • TACACS+
    • RADIUS
    • Local database
  • Troubleshoot router security features
    • IPv4 access control lists (standard, extended, time-based)
    • IPv6 traffic filter
    • Unicast reverse path forwarding (uRPF)
  • Troubleshoot control plane policing (CoPP)
    • Telnet
    • SSH
    • HTTP(S)
    • SNMP
    • EIGRP
    • OSPF
    • BGP
  • Describe IPv6 First Hop security features
    • RA guard
    • DHCP guard
    • binding table
    • ND inspection/snooping
    • source guard
• 4.0 Infrastructure Services
  • Troubleshoot device management
    • Console and VTY
    • Telnet, HTTP, HTTPS, SSH, SCP
    • (T)FTP
  • Troubleshoot SNMP
    • Version 2c
    • Version 3
  • Troubleshoot network problems using logging
    • local
    • syslog
    • debugs
    • conditional debugs
    • timestamps
  • Troubleshoot IPv4 and IPv6 DHCP
    • DHCP client
    • IOS DHCP server
    • DHCP relay
    • DHCP options)
  • Troubleshoot network performance issues using IP SLA
    • jitter
    • tracking objects
    • delay
    • connectivity
  • Troubleshoot NetFlow
    • v5
    • v9
    • flexible NetFlow
  • Troubleshoot network problems using Cisco DNA Center assurance
    • Connectivity
    • Monitoring
    • Device health
    • Network health