I will be recycling the last labs Topology for this and one final OSPFv3 headache, and then IPv6 is done for now (though I am sure I will recover the topics at some point). So as can be seen kind of above, it's a weird sort of RIP boundary to not block the IPv6 addresses … Continue reading RIP for IPv6 (RIPng) configurations, explanations, and plenty of examples!
Not /fin with this Topology of course, after this lab of fine tuning some sub-optimal routing I am taking copies of all "sh run" to be able to spin this lab up again if it ever gets the "wr er", however it will be /fin for review and onto the subject of VPN's. So, Part … Continue reading Part 6: Troubleshooting of sub-optimal routing via route-maps / redist/ policy routing, and an old friend OSPF distance comes to save the day! (GREAT review!)
I took a quick moment to post before this, advising not to study or lab tired, cause as can be seen towards the end of my Part 4 of this lab I am just tired and swinging at air. Anyway, we now have R1 and R3 both acting as ASBR's, with R1 doing 2-way route-tagged … Continue reading Part 5: Turning “IP Routing” on for Layer 3 SW1, Policy / Local Policy Routing, found sub-optimal routing due to AD! (Will be 6th lab to troubleshoot)
(Added interface #'s to the Topology as we increase working with both IP's and interfaces) I wanted to touch this quick before moving on to policy routing, whether Distribute-Lists can block certain networks from a Summary Route, or if it's possibly at all. So I'll run through it quick here to move on: Distribute-List … Continue reading Part 4: The right ACL for the right job (Distribute-List vs Route-Map), Configuring 3-way Route Redistribution with a lot of failures but final success!!!
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!
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!
Boy do I feel stupid. After spending hours of scratching my head at why this is not working yet, as OSPF seems to be gettings tags but RIP is not, that is when I really put my work under a microscope and found that I was applying OSPF2RIP in OSPF router config and the other … Continue reading Part 3: Finally got Route-Maps for Redistribution working correctly, important notes within on how!
So to begin this, right off the bat I am having trouble seeing some routes on R1 from R4, as I just did a "wr er" and reloaded / reconfigured it to be directly connected. However, on R4, things couldn't possible be going better, I created lo5 and lo15 to simulate those networks from the … Continue reading Part 2: A struggle getting RIP on R1 to get any Redistributed OSPF, may need router reconfigs
Above is a "Single-Point 2-way Redistribution" in our network, which is honestly not going to (probably ever) present a loop from sharing or "leaking"routes back into their own domains, however route-tagging usefulness goes beyond just Redistribution as we will see it I assume in the next topic up PBR (Policy Based Routing / Policy Routing) … Continue reading Part 1: Route-Map tagging for 2-way Redistribution, a prevention mechanism for routing loops!
So where Part 1 of this lab left off, we learned that without that "catch all" clause at the end permitting traffic, then it is dropped like an ACL would. Going through the 2-way Redistribution video, I also learned that sequence #'s do also work exactly like ACL's, so you will want to plan your … Continue reading Part 2: Understanding Route-Map Sequence significance, Clauses, and lots of details to finish this Route-Map lab!
Being that the two way redistribution training gets into route tagging and other fun concepts, I want to just get an easy lab configuration under my belt to get myself started, and will just be working with R3 and R4 as no other routers can see the OSPF routes except R3 after I do this: … Continue reading Part 1: RIP into OSPF 1-way Redistribution, Route-Map lab
I have to say that going from Distribute-Lists where you are just applying standard ACL's to Redistribution is like little league softball compared to Route-Map configuration for them. I planned to study them more before throwing a post up with some lab work getting done, but this is a really exciting topic to me, as … Continue reading An Introduction into the wonderful world of Route-Maps, setting the lab
As the Topology shows, with all the Branch Offices and Departments, IT just got real! Concepts will be learned on pieces of this network, will continue to be built out and troubleshot using different methods, and will eventually be using this similar Topology to create scenarios and try to avoid dry lab manuals if possible … Continue reading Distribute-List’s, ACL’s, and a shiny new Topology for practice scenarios for both Distribute-List’s and Route-Map’s
It is late so I am going to crunch in a quick lab to get everything reconfigured so it is pinging and happy, so I can get into EIGRP, and forget troubleshooting the NBMA was such a painfully simple answer. Thinking doing these labs in the middle of the night / morning is probably not … Continue reading Part 4: Fixed OSPF Redistribution and NBMA, EIGRP Redistribution with a side of static routing (to begin with)
So to quickly summarize where I left off, I've decided that the Area 0 loopback on R4 with a virtual-link to it was not going to work due to the ABR being R4. SO, to rectify this I am first going to attempt to add Area 0 on R3, create a virtual-link to some random … Continue reading Part 2: Troubleshooting OSPF neighbor formation, NBMA routing issues found