This list is intended to provide a general view of the skill sets required to successfully complete the JNCIE-ENT exam.

System Services and Security
Interfaces
Ethernet Switching
IGPs
BGP
Protocol Independent Routing
Multicast
Class of Service

• System Services
  • NTP
  • Syslog
  • sFlow
  • Authentication and authorization
  • Configuring archival
  • RPM
  • PoE
• Securing the Control Plane
  • Stateless firewall configuration

• Implementation of Interfaces
  • Aggregated Ethernet
  • VRRP
  • Ethernet OAM
  • GRE tunnels
  • BFD
  • Logical tunnel interfaces

• Spanning Tree Protocol
  • Multiple CIST
  • MSTP/VSTP/RSTP
  • xSTP interoperability
  • Multiple topologies
  • Optimization
• VLANs
  • VLAN switching and trunking
  • Q-in-Q
  • IP Telephony
  • Private VLANs
  • Voice VLANs
• Virtual Chassis
  • Master determination
  • Add/remove members
  • VCP and VCEP interfaces
  • Split detection
• Security features
  • Port security features
  • Dynamic ARP inspection with DHCP snooping
  • Layer 2 firewall filters
  • MAC table filtering

• OSPF
  • Multi-area OSPF topologies
  • Filter and summarize routes
  • Network and link types
  • Route selection process
  • BFD
  • Redistribution
  • IPv6

• Implementation and Troubleshooting
  • Routing policy
  • Route selection
  • 2-byte and 4-byte AS
  • Multi-homed stub-AS
  • BFD

• Load Balancing
  • Hash key
  • Per flow
• Filter-based Forwarding
  • Based on Layer 4
  • Based on IFL
• Configuring Routes
  • Aggregate
  • Static
  • Generated
  • Policies

• Implementation of Multicast
  • Shared tree and source tree
  • Designated router
  • RPF table manipulation
• SSM
  • Extend the group range
  • SSM mapping
• RP Redundancy
  • Anycast RP (PIM and MSDP)
  • BSR

• Implementation
  • Loss priority
  • Rewrite rules
  • Shaping and policing
  • Scheduling
  • BA and MF classification
  • Drop profiles