Junos build from a Cisco spec
Take a working Cisco configuration and reproduce its intent on Junos, then prove equivalence.
Juniper JNCIA
Junos from the ground up: the CLI and configuration model, routing policy, firewall filters and how Junos differs from IOS in practice.
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- Section
- Routing & Switching
- Trained
- 3,000+
Course overview
Juniper JNCIA is a intermediate-level course from Tungabadra Networks. It covers 7 modules, is delivered classroom, online (live), corporate (on-site), and includes 3 applied projects. It prepares for Juniper JNCIA-Junos.
Juniper JNCIA covers the Junos operating system: its configuration model, the candidate-and-commit workflow, routing fundamentals, routing policy and firewall filters.
For engineers coming from Cisco, the course spends real time on where the two platforms diverge. The commit model, the policy framework and the way Junos treats interfaces catch people out, and those are the areas most worth drilling.
It follows the topic areas Juniper publishes for the JNCIA-Junos credential.
Who this course is for
- Engineers working in multi-vendor environments
- Cisco-trained engineers adding Juniper
- Engineers targeting service provider roles where Junos is common
- Anyone preparing for JNCIA-Junos
What you will be able to do
By the end of Juniper JNCIA, you will be able to:
- Navigate the Junos CLI and the candidate configuration model confidently
- Configure interfaces, routing instances and static and dynamic routing
- Write and apply routing policy
- Build firewall filters and apply them correctly
- Use commit confirmed and rollback as a safety practice
- Translate a Cisco configuration intent into Junos
Skills covered
- Junos CLI
- Candidate config & commit
- Routing policy
- Firewall filters
- OSPF on Junos
- BGP basics
- Routing instances
- Rollback and commit confirmed
- Multi-vendor translation
- Junos troubleshooting
Curriculum
7 modules of instruction and lab work.
Networking Fundamentals
5 topics
- Collision and broadcast domains
- Routers vs switches
- Layer 2 and Layer 3 addressing
- IPv4 and IPv6, subnetting, supernetting and binary
- Longest match, CoS, connection-oriented vs connectionless
Junos OS Fundamentals
4 topics
- Software architecture
- Control and forwarding planes
- Routing Engine and Packet Forwarding Engine
- Transit vs exception traffic
User Interfaces
3 topics
- CLI modes, navigation, help and filtering
- Active vs candidate configuration
- Rollback, save and load
Configuration Basics
4 topics
- Factory default
- Users, login classes and authentication
- Interfaces and configuration groups
- NTP, SNMP, syslog, archival and rescue configuration
Operational Monitoring & Maintenance
4 topics
- show and monitor commands
- Interface statistics
- ping, traceroute, telnet and SSH
- Junos install and upgrade, power, root password recovery
Routing Fundamentals
4 topics
- Forwarding behaviour
- Routing vs forwarding tables
- Route preference and routing instances
- Static and dynamic routing
Routing Policy & Firewall Filters
4 topics
- Import and export policies
- Match criteria and actions
- Filter structure and terms
- Unicast RPF
Projects you will complete
Routing policy exercise
Implement a route filtering requirement using the Junos policy framework and verify each term.
Safe change drill
Apply a change with commit confirmed, observe a failure, and roll back cleanly.
Prerequisites
- Working knowledge of routing and switching
- CCNA Advanced Training or equivalent
- No prior Junos experience required
Certification
Course completion certificate
Issued on completion. The certificate lists the modules completed and the skills applied. Tungabadra Networks is not an authorized training partner of this vendor and does not administer or issue the exam. Exams are booked and paid for directly with the vendor.
This course also covers the topic areas assessed by the following third-party exams:
- Juniper JNCIA-Junos
Career opportunities
Roles this course is designed to prepare you for in the US job market:
Network Engineer (multi-vendor)
Supports mixed Cisco and Juniper estates.
Service Provider Engineer
Works on Junos-based provider infrastructure.
NOC Engineer
Triages faults across multi-vendor networks.
Implementation Engineer
Deploys and migrates Juniper platforms.
Frequently asked questions
Is this useful if my company runs Cisco?
Yes, in two ways: multi-vendor estates are common, and understanding a second configuration model makes you better at the first. The course explicitly contrasts the two.
Do I need Juniper experience?
No. The course starts from the CLI and the configuration model.
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Questions about Juniper JNCIA?
Tell us your background and we will confirm whether this course is the right level, or point you to a better starting point.