Juniper Network Course

Junos MPLS Fundamentals



This 2-day course is designed to provide students with a solid foundation on Multiprotocol Label Switching (MPLS). After introducing concepts such as MPLS forwarding and the structure of the MPLS header, the course will delve into the configuration and operation of the two main label distribution protocols, RSVP and LDP. Special emphasis is given to the central topics of traffic engineering and MPLS traffic protection, including fast reroute, link/node protection, and LDP loop-free alternate. The concepts are put into practice with a series of in-depth hands-on labs, which will allow participants to gain experience in configuring and monitoring MPLS on Junos OS devices. These hands-on labs utilize Juniper Networks vMX Series devices using the Junos OS Release 16.1R3.10, but are also applicable to other MX Series devices.



Available Certifications

Students must pass exam to be certified.

TFS JMF Certification $150

Call 877.529.9114



After successfully completing this course, you should be able to:

  • Describe the history & rationale for MPLS & basic terminology.
  • Explain the MPLS label operations (push, pop, swap) and the concept of label-switched path (LSP).
  • Describe the configuration & verification of MPLS forwarding.
  • Describe the functionalities and operation of RSVP and LDP.
  • Configure and verify RSVP-signaled and LDP-signaled LSPs.
  • Select and configure the appropriate label distribution protocol for a given set of requirements.
  • Describe default Junos OS MPLS traffic engineering behavior.
  • Explain the Interior Gateway Protocol (IGP) extensions used to build the Traffic Engineering Database (TED).
  • Describe the Constrained Shortest Path First (CSPF) algorithm, its uses, and its path selection process.
  • Describe administrative groups and how they can be used to influence path selection.
  • Describe the default traffic protection behavior of RSVPsignaled LSPs.
  • Explain the use of primary and secondary LSPs.
  • Describe the operation and configuration of: fast reroute, link and node protection, LDP loop-free alternate.
  • Describe the LSP optimization options.
  • Explain LSP priority and preemption.
  • Describe the behavior of fate sharing.
  • Describe how SRLG changes the CSPF algorithm when computing the path of a secondary LSP.
  • Explain how extended admin groups can be used to influence path selection.
  • Explain the purpose of several miscellaneous MPLS features


  • Introduction to Junos MPLS Fundamentals
  • MPLS Foundation, Terminology, Configuration, Packet Forwarding
  • Label Distribution Protocols: Protocols, RSVP, LDP
  • Routing Table Integration: Mapping Next-Hops to LSPs, Route Resolution Example, Route Resolution Summary, IGP Passive Versus Next-Hop Self for BGP Destinations
  • Constrained Shortest Path First: RSVP Behavior Without CSPF, CSPF Algorithm, CSPF Tie Breaking, Administrative Groups, Inter-area Traffic Engineered LSPs
  • Fate Sharing: Junos OS Fate Sharing, SRLG, Extended Admin Groups
  • MPLS Features: Forwarding Adjacencies, Policy Control over LSP Selection, LSP Metrics, Automatic Bandwidth, Container LSPs, TTL Handling, Explicit Null Configuration, MPLS Pings


There are no labs associated with this course.

Prerequisites: None

Students should have intermediate-level networking knowledge and should be familiar with the Junos OS command-line interface (CLI). Students should also attend the Introduction to the Junos Operating System (IJOS), Junos Routing Essentials (JRE), and Junos Intermediate Routing (JIR) courses prior to attending this class.

Target Audience

This course benefits individuals responsible for configuring and monitoring EX Series switches running Junos ELS.



Call 877.529.9114 for scheduling information.


Remember, if you have 5 or more students, we can bring our class to you at your own facility – saving you time and money!

Customized Training

Any of our courses can be customized to focus on your needs – like using specific equipment, or working in a particular situation.

Cancellation Policy

We reserve the right to cancel any course. A full refund will be provided unless the student elects to transfer to another course or time.

No refunds will be granted for student cancellation, but substitutions are permitted.