Latest:
  • MAXIMISE YOUR JUNOS NETWORK WITH MPLS, PART 2: AUTO-BANDWIDTH
  • MAXIMISE YOUR JUNOS NETWORK WITH MPLS, PART 1: RSVP BANDWIDTH & PRIORITIES
  • JUNOS: MPLS SELF-PING, ON JUNIPER ROUTERS
  • I HAD FUN ON JUNIPER’S SUBSCRIBER MANAGEMENT COURSE!
  • BFD ON JUNOS! BIDIRECTIONAL FORWARDING DETECTION – JUNIPER-CONFIG, MULTI-VENDOR EXPLANATION!
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juniper junos mpls 

MAXIMISE YOUR JUNOS NETWORK WITH MPLS, PART 2: AUTO-BANDWIDTH

January 10, 2021January 11, 2021 Chris 402 Views 0 Comments

Setting RSVP bandwidth reservations automatically is very prone to error. Luckily, there’s a better way: we can automate the whole thing using the Junos auto-bandwidth command. Let’s take a look at some cool new Juniper config!

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isis juniper junos mpls routing 

MAXIMISE YOUR JUNOS NETWORK WITH MPLS, PART 1: RSVP BANDWIDTH & PRIORITIES

December 14, 2020January 11, 2021 Chris 1139 Views 0 Comments

RSVP lets us create LSPs that reserve bandwidth in advance. And that’s exactly what this three-part blog post series is all about! In this first post we’re going to learn how we combine bandwidth and priorities to get the most out of the bandwidth in our network. Click here for good times!

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juniper junos 

I HAD FUN ON JUNIPER’S SUBSCRIBER MANAGEMENT COURSE!

October 20, 2020October 20, 2020 Chris 1013 Views 0 Comments

Subscriber Management is a real dark art. Not many folks know it. And yet, it’s essential for ISPs offering xDSL and fibre connectivity. This Juniper course taught me a lot about it. Click to find out more!

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bgp juniper junos mpls vpn 

JUNIPER JNCIP-SP: USING INDEPENDENT-DOMAIN TO TUNNEL CUSTOMER BGP VPN PREFIXES

August 22, 2020August 22, 2020 Chris 1746 Views 0 Comments

The independent-domain command is a little-known but big-useful command. Let’s see how we can use it in Junos to tunnel localpref info from one VPN customer site to another!

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jncis juniper junos 

MY JUNIPER JNCIS-SP WEBINAR: A SLIDESHOW FULL OF ADVICE TO HELP YOU STUDY

June 22, 2020June 22, 2020 Chris 3071 Views 2 Comments

I recently hosted a webcast for Juniper, to help folks studying for the JNCIS-SP exam. Give this a read to find out some cool study tips!

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bgp jncis juniper junos junos for ios engineers mpls routing vpn 

ROUTE DISTINGUISHERS vs ROUTE TARGETS: WHAT’S THE DIFFERENCE? (JUNOS FOR CISCO IOS ENGINEERS)

May 10, 2020May 11, 2020 Chris 18127 Views 14 Comments

In this post we use both Cisco IOS and Juniper Junos config to see the difference between route-distinguishers and route-targets in MPLS VPNs. Why do we need both of them? Click here to find out!

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jncia juniper junos junos for ios engineers ospf 

JUNOS FOR IOS ENGINEERS: HOW DO YOU CONFIGURE A JUNOS ROUTER?

May 4, 2020July 6, 2020 Chris 2237 Views 2 Comments

In Part 2 of this series we look at how you make configuration changes in Junos – and how you can very easily scrap your changes without doing any damage o your network. Very clean!

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juniper junos python 

USING PYTHON TO CREATE 12,000 LINES OF JUNIPER SRX CONFIG IN 0.01 SECONDS

April 5, 2020April 6, 2020 Chris 4401 Views 7 Comments

This post assumes ZERO Python knowledge on your part! You don’t even need Junos knowledge: I’ll do my best to make this useful for folks of ALL skill levels. If you’ve ever wanted to learn Python, but never knew where to start… read on!

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juniper junos multicast routing 

MULTICAST: IGMP VERISON 3 ON JUNIPER ROUTERS (FOR JNCIP & JNCIE STUDENTS)

March 7, 2020October 25, 2020 Chris 2641 Views 0 Comments

Today we’re looking at what advantages IGMPv3 brings to the table! Give this a read to see packet captures and full config for the whole topology.

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juniper junos 

JNCIP-ENT: THE ULTIMATE RESOURCE FOR JUNIPER’S PROFESSIONAL ENTERPRISE CERT

January 19, 2020October 27, 2020 Chris 5891 Views 8 Comments

If you’re thinking about taking Juniper’s excellent Professional Enterprise exam, give this post a read – I’ve hooked you up with a ton of useful links to help you to succeed!

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Hi!

I’m Chris, a network engineer, Juniper Ambassador and JNCIE-SP #2981. I’ve contributed towards a few books for Juniper in my time, and I have a few vendor certifications too, from Juniper, Cisco, Palo Alto and F5. But don’t mistake it for me actually knowing anything: I just do exams because I like a good pub quiz.

This is a blog of random knowledge I’ve acquired while studying for those sweet sweet network engineering certifications. There’s a big focus on Juniper in this blog, but sometimes I do other vendors too.

As I learn cool new stuff, I try to write it up with plenty of jokes, and a generous dollop of silliness, so that you’ll have as much fun learning about networking as I do.

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