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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NETWORK FUN-TIMES

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Author: Chris

juniper junos mpls 

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

January 10, 2021January 11, 2021 Chris 398 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 1137 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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junos mpls 

JUNOS: MPLS SELF-PING, ON JUNIPER ROUTERS

December 6, 2020December 12, 2020 Chris 928 Views 5 Comments

If you’re an ISP running Juniper, it’s essential that you allow MPLS Self-Ping. If you don’t… weird things happen. Click to find out more!

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juniper junos 

I HAD FUN ON JUNIPER’S SUBSCRIBER MANAGEMENT COURSE!

October 20, 2020October 20, 2020 Chris 1012 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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Uncategorized 

BFD ON JUNOS! BIDIRECTIONAL FORWARDING DETECTION – JUNIPER-CONFIG, MULTI-VENDOR EXPLANATION!

September 12, 2020October 10, 2020 Chris 1798 Views 2 Comments

BFD is a protocol that gives all your other protocols sub-second failure detection times. Very useful! This blog post uses Junos config, but the explanation is multi-vendor. Give it a read!

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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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isis junos 

REDISTRIBUTING YOUR ENTIRE IS-IS NETWORK BY MISTAKE: BEWARE THIS DEFAULT BEHAVIOUR!

July 21, 2020July 28, 2020 Chris 2585 Views 2 Comments

If you leave IS-IS to its default config, you could cause something big to impact your network! And chances are, even if you think you know what that impact is, you might not have worked out the whole story. Click here to read the lesson I learned in my lab!

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junos for ios engineers 

JUNOS FOR CISCO IOS ENGINEERS: SAVING YOUR CONFIG – WITH POWER!

July 6, 2020July 12, 2020 Chris 1639 Views 5 Comments

In Part 3 of this, we see how Junos takes saving configurations to the next level, and gives us HUGE power. Checking our work, rolling back to older configs, automatically rolling back to fix problem – we can do so much with Junos. Let’s find out how!

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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 3068 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 18124 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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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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