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!

EIGRP: Convergence refresher: Hello’s, Query’s, Active and SIA Route states, and limiting the scope of Query’s! FUN STUFF!

No diagram for this one, just wanted to post some refresher notes on EIGRP, as its been awhile since I've looked at some fundamentals, and I felt it'd be good to post some refresher on EIGRP network convergence and other things to think about for exam day that aren't technical configurations but just protocol behaviors. … Continue reading EIGRP: Convergence refresher: Hello’s, Query’s, Active and SIA Route states, and limiting the scope of Query’s! FUN STUFF!

OSPF: DEEP Dives into Summarization methods, Authentication, Default-Information Originate (Always)!

Since I already have the lab configured with different OSPF Area's, and we had a riveting exploration into the world of LSA's and the LS DB of each router, I wanted to hit some other topics again thoroughly before I switch up protocols for more DEEP Dives into all things CCNP ROUTE related! Without further … Continue reading OSPF: DEEP Dives into Summarization methods, Authentication, Default-Information Originate (Always)!

BGP Route Aggregation / Summarization explained, configured, and some important details for exam day!

I'd like to start off with a quick example of the output from when I was adjusting routers from the previous lab for this lab, by doing "no router bgp 123" on it and creating AS 15 on it, with a neigbor statement point at 172.12.15.5 and went to R5 to do the same: *Apr … Continue reading BGP Route Aggregation / Summarization explained, configured, and some important details for exam day!

Part 2: Deep Dive into EIGRP / OSPF / RIP Authentication, Route Summarization, OSPF troubleshooting to end lab!

Tonight I had a whole agenda of tasks to configure as much as I could on this network, however I was only able to demonstrate authentication configuration for all 3 protocols thoroughly, create a Summary Route for R5, and troubleshoot an OSPF issue that was a bit tricky to catch but finally got it (which … Continue reading Part 2: Deep Dive into EIGRP / OSPF / RIP Authentication, Route Summarization, OSPF troubleshooting to end lab!

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