Latest:
  • My New SR-MPLS Course, and Krzysztof’s SRv6 Blogs
  • Add Timestamps To Your Junos CLI Output
  • IS-IS and Unnumbered Ethernet Interfaces in Junos
  • Your “Multihop” BGP Session Probably Isn’t Multi-Hop
  • A Beginners Guide to Junos Firewall Filters
NETWORK FUN-TIMES

NETWORK FUN-TIMES

Learn Juniper and Cisco networking – with jokes!

  • Home
  • Posts By Category
    • JUNOS
    • BGP
    • MPLS
    • OSPF
    • ISIS
    • JUNOS FOR IOS ENGINEERS
    • MULTICAST
    • SUBNETTING
  • ABOUT
  • BLUESKY
  • RSS
  • DONATE!

vpn

bgp juniper junos mpls routing vpn 

INTERPROVIDER OPTION C, ON JUNIPER JUNOS ROUTERS – PART 1: CONFIGURATION WITH LDP (INCLUDES FULL TOPOLOGY CONFIG!) (JNCIP-SP, JNCIE-SP)

July 10, 2019March 24, 2024 Chris 18526 Views 2 Comments

The first in a three-part series explaining Interprovider Option C on Juniper routers! In this post: what is it, and how is it configured? Click here to obtain that 420-69 IQ you’ve always dreamed of.

Read more
bgp juniper junos mpls routing vpn 

INTERPROVIDER OPTION B, ON JUNIPER JUNOS ROUTERS (INCLUDES FULL TOPOLOGY CONFIG!) (JNCIP-SP, JNCIE-SP)

May 19, 2019March 24, 2024 Chris 19558 Views 5 Comments

Let’s learn how to stretch an MPLS VPN between ISPs using a thing called “Option B”. It involves a little bit of trust between the ISPs – but as we’ll see, it greatly reduces the complexity in configuration!

Read more
bgp isis juniper junos mpls vpn 

INTERPROVIDER OPTION A, ON JUNIPER JUNOS ROUTERS (INCLUDES FULL TOPOLOGY CONFIG!) (JNCIP-SP, JNCIE-SP)

May 12, 2019March 24, 2024 Chris 18452 Views 6 Comments

Ever wondered whether it’s possible to stretch an MPLS VPN across two ISPs? Well, indeed it is! In fact, there’s three ways to do it, and in this post we learn all about the method officially known as “Option A”.

Read more
  • Next →

Hi there!

Welcome to my blog of networking and nonsense.

I’m Chris. By day I’m a London-based network engineer, instructor, and courseware developer for Juniper Networks. But in my spare time I come here to write some sweet sweet blog posts to help you with your networking studies, with just as much focus on fun as on the tech. I hope you like what you see!

In this corner of the information super-highway you’ll find tons of stuff about BGP, MPLS, OSPF and IS-IS. If that sounds fun then you’ve come to the right place. You’ll also find posts I made on my journey towards JNCIE-SP, which I hope will help you on your own journey.

There’s a big focus on Juniper and Junos in this blog, but tons of the theory is entirely vendor-neutral. No matter what networking platform you’re more comfortable with, you’re very welcome here.

Please note that it costs £750,000 to read my posts. This is enshrined in international law, and late payment will result in the fee being scrapped and replaced with a £25 fine. I did ask the United Nations to scrap this law entirely, but they insisted that it stayed. Sorry readers, it’s out of my control.

Donate!

Copyright © 2025 Chris Parker. All rights reserved.