OSPF: Important details regarding Summarization and Default Routes for exam day, it’s a long but worthwhile read!

OSPF Summarization is done only on ABR and ASBR routers in your OSPF domain, and use two completely different commands, but what if a router is an ABR and an ASBR? For example, did you know that using the command "default-information originate ..." you are telling the router to create a Type 5 LSA to … Continue reading OSPF: Important details regarding Summarization and Default Routes for exam day, it’s a long but worthwhile read!

IPv6 Redistribution, Stub and Total Stub configuration, and some gotchas to watch for on exam day!

I was going to bring R1 in on this with a Point-to-Point Serial cable, to make the Topology look a little less pathetic than the usual all out routers everywhere model, however for these topics I only need these 3 - Though I may need to for further IPv6 studies. So far I've confirmed the … Continue reading IPv6 Redistribution, Stub and Total Stub configuration, and some gotchas to watch for on exam day!

Part 1: Setting up the new, bigger, and better lab to configure everything we’ve learned up to this point!

  As previously mentioned I believe, this will be a multi-part lab in which I will configure "Multi-Point" 2-way Redistribution / Policy-Routing / Distribute-Lists / Route-Maps / and troubleshooting all along the way. Here are a few things I know I want to achieve over the several parts of this lab: Authentication deep dive for … Continue reading Part 1: Setting up the new, bigger, and better lab to configure everything we’ve learned up to this point!

OSPF Metric Types (E1, E2) config, OSPF Route Summary

I will be using the same lab where I left off before, at least the same logical topology with possibly some loopbacks thrown in there to perform different types of Summarization: The first thing to address with the above topology, is that the External (O E2) routes brought into the OSPF network via Redistribution on … Continue reading OSPF Metric Types (E1, E2) config, OSPF Route Summary