Junos: IS-IS Study Notes, Part 3 – Interfaces, Metrics, the DIS, and Pseudonodes

It’s the third part in our series on IS-IS! In this post you’re going to learn about interface types, broadcast interfaces, metrics, and the OSPF equivalent of the designated router – the “designated intermediate system”, or DIS. It’s way more efficient than how OSPF does it. I think you’re gonna enjoy this one!

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Junos: IS-IS Study Notes, Part 1 – For Juniper’s JNCIS-SP and JNCIS-ENT Exams

Here’s the first post in my five-part guide to IS-IS. Wow, what a Christmas treat! In this first post we compare IS-IS to OSPF; we’ll talk about Level 1 and Level 2; we’ll explain the unique addressing system; we’ll look at a basic config, and we’ll talk about why Googling for IS-IS is very different from Googling for ISIS.

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