Enterprise Routing and Switching, Professional (JNCIP-ENT)

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The Enterprise Routing and Switching track enables you to demonstrate competence with networking technology in general and Juniper Networks enterprise routing and switching platforms. JNCIP-ENT, the professional-level certification in this track, is designed for experienced networking professionals with advanced knowledge of the Juniper Networks Junos OS. The written exam verifies your understanding of advanced routing technologies and related platform configuration and troubleshooting skills.

This track includes four certifications:

  • JNCIA-Junos: Junos, Associate. For details, see JNCIA-Junos.
  • JNCIS-ENT: Enterprise Routing and Switching, Specialist. For details, see JNCIS-ENT.
  • JNCIP-ENT: Enterprise Routing and Switching, Professional. For details, see the sections below.
  • JNCIE-ENT: Enterprise Routing and Switching, Expert. For details, see JNCIE-ENT.

Exam Preparation

We recommend the following resources to help you prepare for your exam. However, these resources aren't required, and using them doesn't guarantee you'll pass the exam.

Exam Objectives

Here’s a high-level view of the skillset required to successfully complete the JNCIP-ENT certification exam.

Exam Objective

Description

Interior Gateway Protocols (IGPs)

Describe the concepts, operation, or functionality of IGPs

  • IS-IS
  • OSPFv2 and OSPFv3
  • Routing Policy

Given a scenario, demonstrate knowledge of how to configure, troubleshoot, or monitor IGPs

BGP

Describe the concepts, operation, or functionality of BGP

  • BGP route selection process
  • Next hop resolution
  • BGP attributes: concept and operation
  • BGP communities
  • Regular expressions
  • Load balancing - multipath, multihop, forwarding table
  • NLRI families: inet and inet6
  • Advanced BGP options

Given a scenario, demonstrate knowledge of how to configure, troubleshoot, or monitor BGP

  • Implement BGP routing policy

IP Multicast

Describe the concepts, operation, or functionality of IP multicast

  • Components of IP multicast, including multicast addressing
  • IP multicast traffic flow
  • Any-Source Multicast (ASM) vs. Source-Specific Multicast (SSM)
  • RPF: concept and operation
  • IGMP and IGMP snooping
  • PIM dense-mode and sparse-mode
  • Rendezvous point (RP): concept, operation, discovery, and election
  • SSM: requirements, benefits, address ranges
  • Anycast RP
  • MSDP
  • Routing policy and scoping

Given a scenario, demonstrate knowledge of how to configure, troubleshoot, or monitor IP multicast

  • IGMP, PIM-DM, or PIM-SM (including SSM)
  • Implement IP multicast routing policy

Ethernet Switching and Spanning Tree

Describe the concepts, operation, or functionality of advanced Ethernet switching

  • Filter-based VLANs
  • Private VLANs
  • Dynamic VLAN registration using MVRP
  • Tunnel Layer 2 traffic through Ethernet networks
  • Junos Fusion Enterprise
  • Layer 2 tunneling using Q-in-Q and L2PT

Given a scenario, demonstrate knowledge of how to configure, troubleshoot, or monitor advanced Ethernet switching

  • Filter-based VLANs
  • Private VLANs
  • Dynamic VLAN registration using MVRP
  • Tunnel Layer 2 traffic through Ethernet networks
  • Junos Fusion Enterprise
  • Layer 2 tunneling using Q-in-Q and L2PT

Describe the concepts, operation, or functionality of advanced spanning tree protocols, including MSTP or VSTP

  • Given a scenario, demonstrate knowledge of how to configure, troubleshoot, or monitor MSTP or VSTP

Layer 2 Authentication and Access Control

Describe the operation of various Layer 2 authentication or access control features

  • Authentication process flow
  • 802.1x: concepts and functionality
  • MAC RADIUS
  • Captive portal
  • Server fail fallback
  • Guest VLAN
  • Considerations when using multiple authentication/access control methods

Given a scenario, demonstrate how to configure, troubleshoot, or monitor Layer 2 authentication or access control

IP Telephony Features

Describe the concepts, operation, or functionality of features that facilitate IP telephony deployments

  • Power over Ethernet (PoE)
  • LLDP and LLDP-MED
  • Voice VLAN

Given a scenario, demonstrate how to configure, troubleshoot, or monitor features used to support IP telephony deployments

Class of service (CoS)

Describe the concepts, operation, or functionality of Junos CoS for Layer 2 or 3 networks

  • CoS processing on Junos devices
  • CoS header fields
  • Forwarding classes
  • Classification
  • Packet loss priority
  • Policers
  • Schedulers
  • Drop profiles
  • Shaping
  • Rewrite rules

Given a scenario, demonstrate knowledge of how to configure, troubleshoot, or monitor CoS for Layer 2 or 3 networks

EVPN

Describe the concepts, operation, or functionality of Junos EVPN

  • VXLAN
  • Multi-homing (for example, active route types)

Given a scenario, demonstrate knowledge of how to configure, troubleshoot, or monitor EVPN

Exam Details

Exam questions are derived from the recommended training and the exam resources listed above. Pass/fail status is available immediately after taking the exam. The exam is only provided in English.

JN0-648

120 minutes

Written exam, plus 65 multiple-choice questions

Junos OS: 19.3

Recertification

Juniper certifications are valid for three years. For more information, see Recertification.