The Unofficial JNCIE-ENT Prep Guide
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The Unofficial JNCIE-ENT Prep Guide

A guide to help you prepare for your JNCIE-ENT Lab exam

About the Book

This is a workbook with the focus on studying for and taking your JNCIE lab exam.  I used the JNCIE-ENT syllabus as a guide while writing this workbook.  I took each exam topic and explained it, configured it, and showed the options for that item.  This workbook is over 500 pages of information to help you study for your JNCIE-ENT lab exam.

About the Author

Jeffrey Fry
Jeffrey Fry

Jeffrey Fry is Cisco CCIE 22061 as well as Juniper JNCIP-ENT, JNCIS-SP, JCNIS-SEC, JNCIS-QF, Juniper Ingenious Champion, F5-CA, and some other certifications.   He has been in the industry for over 20 years and has worked on networks from small mom-and-pop locations, large multinational networks, as well as ISP networks.  He is also a technical editor for the Cisco Press NX-OS 2nd Edition from Cisco Press.

You can find his blogs and existing NX-OS, IOS-XR, and JUNOS free workbooks at

Table of Contents

  • About this guide
    • Recognition
    • Errata
    • Future
  • Updates and Changes
  • Juniper Certification Overview
  • Lab Location (US), Scheduling, and Information
  • Lab setup for this guide
  • System Services and Security
    • System Services
    • NTP
    • Syslog
    • Authentication and Authorization
    • Configuring Archival
    • RPM
    • Securing the Control Plane
    • Stateless firewall configuration
  • Interfaces
    • Implementation
    • Aggregated Ethernet
    • VRRP
    • Ethernet OAM
    • GRE Tunnels
    • BFD
    • Logical Tunnel Interfaces
  • Ethernet Switching
    • Spanning Tree Protocol
    • STP
    • VSTP
    • RSTP
    • MSTP and CIST
    • xSTP interoperability and Multiple Topologies
    • Optimization
    • VLANs
    • VLAN switching and trunking
    • Q-in-Q
    • LAYER 2 Protocol Tunneling
    • VLAN Swap
    • IP Telephony
    • Private VLANs
    • Virtual Chassis
    • Master determination
    • Add/remove members
    • Swapping Members
    • VCP and VCEP interfaces
    • Split detection
    • Breaking up a Virtual Cluster
    • Security Features
    • Port security features
    • Dynamic ARP inspection and DHCP snooping
    • Layer 2 firewall filters and other features
    • MAC table filtering
    • Captive Portal
    • Other Layer 2 Security
    • Mirroring
    • sFLOW
  • IGPs
    • OSPF
    • DR/BDR Routers
    • Single Area OSPF
    • Network and link types
    • Adjacency Optimization
    • Multi-area OSPF topologies
    • Filter and summarize routes
    • OSPF LSA
    • Other OSPF
    • Metrics
    • Reference Bandwidth
    • Dynamically Adjusting OSPF Interface Metrics Based On Bandwidth
    • OSPF Preference Values
    • OSPF BFD
    • RIPv2
    • OSPFv3
    • RIPng
    • Redistribution
  • BGP
    • Implementation and Troubleshooting
    • EBGP
    • Route selection
    • BFD
    • More BGP / Routing policy
    • AS Path Filtering
    • Implicit Null
    • IPv6 Peering over IPv4
    • Communities for Route Manipulation
  • Protocol Independent Routing
    • Load Balancing
    • Filter-Based Forwarding
    • Configuring Routes
  • Multicast
    • Implementation of Multicast
    • PIM Dense Mode
    • PIM Sparse Mode
    • Anycast RP
    • Anycast RP with MSDP
    • Source Specific Multicast - SSM
    • Multicast Listener Discovery - MLD
    • Interdomain MSDP
    • EX and IGMP
  • Class of Service
    • Loss priority
    • Packet Classification
    • Multifield Classifiers and Behavior Aggregate Classification
    • Rewrite rules
    • Drop Profiles
    • Shaping and policing
    • Scheduling
    • Putting it all together - Scheduling Configuration
  • Troubleshooting, Tips, and Time Saving Features
    • Traceoptions
    • OSPF Mismatched Area ID
    • Wrong BGP ASN
    • Monitoring an Interface
    • Groups
    • Apply Path
    • Rename
    • Replace
    • Annotate
    • Commenting commits
    • Commit Detail
    • Finding A Config Section
    • Finding the source and destination of a flow when you know the protocol.
  • Appendix A -Important Notes
    • Common Ports
    • Default Route Tables
    • Regular Expressions
    • Firewall Filters Review
    • Routing Protocol Preferences Values
  • Appendix B - IPv6 Primer
    • IPv6 Refresher
  • Appendix C - Multicast Information
    • VLC Multicast Server Setup
    • Windows Server 2003 IPv6
    • Ubuntu Client Screen Shot
    • SSM
  • Bibliography

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