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JMF - Junos MPLS Fundamentals

4.6 out of 5 rating

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2 Days

12 CPD hours

About this course

This course benefits individuals responsible for configuring and monitoring devices running the Junos OS.


Describe the history and rationale for MPLS, as well as its basic terminology.
Explain the MPLS label operations (push, pop, swap) and the concept of label-switched path (LSP).
Describe the configuration and 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 the 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 RSVP-signaled LSPs.
Explain the use of primary and secondary LSPs.
Describe the operation and configuration of fast reroute.
Describe the operation and configuration of link and node protection.
Describe the operation and configuration of 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.


This two-day course is designed to provide students with a solid foundation on Multiprotocol Label Switching (MPLS).

Course Outline
  • Course Introduction
MPLS Fundamentals
  • MPLS Foundation
  • Terminology
  • MPLS Configuration
  • MPLS Packet Forwarding
Label Distribution Protocols
  • Label Distribution 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
Traffic Protection and LSP Optimization
  • Default Traffic Protection Behavior
  • Primary and Secondary LSPs
  • Fast Reroute
  • RSVP Link Protection
  • LDP LFA and Link Protection
  • LSP Optimization
Fate Sharing
  • Junos OS Fate Sharing
  • SRLG
  • Extended Admin Groups
Miscellaneous MPLS Features
  • Forwarding Adjacencies
  • Policy Control over LSP Selection
  • LSP Metrics
  • Automatic Bandwidth
  • Container LSPs
  • TTL Handling
  • Explicit Null Configuration
  • MPLS Pings
Additional course details:

Nexus Humans JMF - Junos MPLS Fundamentals training program is a workshop that presents an invigorating mix of sessions, lessons, and masterclasses meticulously crafted to propel your learning expedition forward.

This immersive bootcamp-style experience boasts interactive lectures, hands-on labs, and collaborative hackathons, all strategically designed to fortify fundamental concepts.

Guided by seasoned coaches, each session offers priceless insights and practical skills crucial for honing your expertise. Whether you're stepping into the realm of professional skills or a seasoned professional, this comprehensive course ensures you're equipped with the knowledge and prowess necessary for success.

While we feel this is the best course for the JMF - Junos MPLS Fundamentals course and one of our Top 10 we encourage you to read the course outline to make sure it is the right content for you.

Additionally, private sessions, closed classes or dedicated events are available both live online and at our training centres in Dublin and London, as well as at your offices anywhere in the UK, Ireland or across EMEA.

Training Insurance Included!

When you organise training, we understand that there is a risk that some people may fall ill, become unavailable. To mitigate the risk we include training insurance for each delegate enrolled on our public schedule, they are welcome to sit on the same Public class within 6 months at no charge, if the case arises.

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