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Roger Perkin

Network Automation Architect

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Juniper Tutorials

JNCIA DevOps

JNCIA DevOps Certification The JNCIA-DevOps (Juniper Networks Certified Internet Associate – Automation and DevOps) is an associate-level certification in Juniper Networks’ Certification …

Juniper Cheat Sheet

Configuration and Show Commands for Juniper Basic Junos Router Show Commands & Configurations Here are 10 essential Junos commands and configurations to help you get started with your Junos …

What is Juniper Apstra?

Juniper Apstra Juniper Apstra is a software only intent-based, closed-loop, multi-vendor networking product that provides a complete fabric management solution, and more! …

How to Shutdown Port Juniper EX4200

This may seem like a simple post but I needed this info today quickly and had to google “How to Shutdown Port Juniper EX4200” The answer is very simple but not having much experience on …

Warning: This device has booted from the backup junos image

Whilst configuring a Juniper EX4200 switch I came across the issue where the primary boot partition had got corrupted, you get the infamous warning: This device has booted from the backup junos image …

How to Find Port from IP Address Juniper Switch

You have been given an IP address and want to find the port which the machine that owns that ip address is plugged into. First you need to find the mac address of the device show arp | match 10.1.5.34 …

Juniper EX4200 USB Software Upgrade

I had to add a Juniper EX4200 switch to a stack today which already had 8 switches in it. There are a few criteria which Juniper specify for adding a new switch to a stack. You can have up to 10 …

Junos as a Second Language

If you are familiar with Cisco IOS and have been asked to look at some Juniper hardware you will be aware of the differences between Junos and IOS. Junos have provided this pretty good CBT course …

JNCIA Junos Juniper Certification

For a work requirement I have been asked to certify myself on Juniper.This is going to be a slight detour from the CCIE studies but should not be a slog! Being mainly a Cisco Engineer, this is all …

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