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!!!
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!
As seen in the previous look at policy routing using a standard ACL, it led to sub-optimal routing due to only routing on the source, and not both source and destination addresses - for this we will use an Extended ACL to correct. So I took the old commands off, nothing fancy: R1(config)#no access-list 5 … Continue reading Using Extended ACL’s for Policy Routing to overcome sub-optimal routing
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!
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!
Being that this lab is already set (see previous post), my EIGRP routes are all showing on R2's ABR R3 as shown below, I am going to write a couple of of Distribution lists. A main point again about Distribute-Lists: You can have more than one, but the more specific dist-list always takes precedence So … Continue reading Finishing look at Distribute-List’s, back to Myself Inc Topology with my new knowledge!
So I must preface this by saying it is the most beautiful day MN has seen in weeks, the sun is out and it's probably mid-high 20's, so it is the perfect day to open the shadows to let the sun in and sit in front of the command line! Ran out and got some … Continue reading Setting up EIGRP to OSPF Redistribution lab, excellent review of concept for exam day
So I am really reeling it back in here, as I think I got over ambitious without learning the basics, so I am just going to do a simple configuration here. For R2, I want to make a Summary route based on the following network numbers: interface Loopback1 ip address 188.8.131.52 255.255.255.255 interface Loopback101 ip … Continue reading Configuration of “Distribute-List”s and 1-way redistribution, with success!!
So after spinning my tires thinking of how to make it work on my very awesome looking Topology from the previous post, I just need to know this works in general for my own sanity. As can be seen, the above Topology is as easy as it gets, I am humbly stepping back, and admitting … Continue reading Physical cabling issues, Distribute-List issues, what is it Monday again??
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