Implementing Cisco IP Routing (642-902 ROUTE) Tutorials
Route Redistribution / Lab 2 - Route Maps pt. 1
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Subtitles of the Movie (Implementing Cisco IP Routing (642-902 ROUTE) / Route Redistribution / Lab 2 - Route Maps pt. 1)
So we're going to jump off into the wonderful world of Route Maps. Route Maps are really cool things, they're, they're perhaps one of my favorite parts of Route Redistribution and that's because you can do so many things with them. You can manipulate Route Updates, you can Tag Routes, you can change the next hop, you can change the Metric type, you can do all kinds of interesting things. Now we're just going to set up a basic Route Map and, and hope that you have enough of a spark to want to learn how it works, to go in and just break this entire topology yourself if you want to and build your own and break it. That's, that's pretty much what I've done. So we're going to use Route Map to accomplish objectives two and three. Configure Redistribution from EIGRP into OSPF. Networks 10.10.1.0 and 10.10.2.0 should have a cost of 100 and a Tag of ten. Network 10.10.3.0 should have a cost of 200 and a Tag of twenty. Network 10.10.5.0 should have a cost of 500 and a Tag of 55. All other networks should have a cost of 250 and a Tag of 25. Do not Redistribute the 10.10.6.0 network into OSPF. So the basis of Route Maps are Access Control Lists and you probably remember Access Control Lists or ACLs from your CCNA studies. And basically we're going to use standard Access Control Lists to tell the router, if you see traffic coming from these source networks or if you see route updates in our, our case, coming form these source networks, then apply these rules to it. And again this ties into the Route Maps. Route Maps is kind of like a programming language, kind of like Basic, if you dealt with Basic way back in the day, you know, last Tuesday. You had line ten, I want you to do this, line twenty I want you to do this, line 30 I want you to do this, line 40 exit and that's pretty much what we're going to do in Route Maps and if you've not ever dealt with Basic, if you're not that old, then never fear, Route Maps are pretty simple in the way that their set up, once you've seen it done or once you've done it yourself. So the first thing we're going to do is go to Router 1 and we're going to set up our Access Control Lists to match the networks that we want to manipulate. So we'll do Config T, we'll do Access List 1 since it is going to be used as Standard Access Control List and if you need a reminder, 1 through 99 of the Standard Access List and they can only filter on source IPs and so that's all we're filtering on, so that's all we care about. So Access List 1 Permit 10.10.1.0 0 I can't type tonight for some reason and 10.10.2.0. So that is our first set of networks that we're going to manipulate. So we'll need to set up an Access Control List for 10.10.3, 10.10.5 and 10.10.6. Even though those networks are just single networks we still have to have an Access Control List that references those networks individually because the Route Map function doesn't give you a way to say, match this network. You always have to match an Access Control List or a Prefix List or you have to match another part of the configuration. So you have to ACLs set up for all of this. In this case, we'll do Access List 2 Permit 10.10.3.0 and we'll do Access List 3 Permit 10.10.5.0 and we're going to set up an Access List 4, that Permits 10.10.6.0. I may hear you asking in your head, well Greg, we're denying that, why we would set up the Access List to be Permit? Well there's two ways to handle denying routes in Route Maps and like with most things in Cisco, it's up to you how you do it, so long as the end result is the same and it, it matches Cisco's best practices. The Access List can be set to match whatever network you're going to deny and then when you set up the Route Map, you can say Route Map whatever deny 50. And deny that network in the Route Map. You are denying the network that was permitted in the Access List Statement. Alternatively you can tell the Access List, I want you to deny this network and then you tell the Route Map, I want you to Permit anything that's not denied in this Access Control List. Again, I prefer to do it as Access List for Permit so that I know I am specifically singling out this one network and everything else is going to be allowed through this Deny Statement that I'm putting in my Route Map. It's six of one, half a dozen of the other. Either one works so it's just really up to you however you want to wrap your head around the logic. So now we've got our Access Lists set up, we're going to do Show Run, we're going to look at the Access List section and I'm going to copy this off and put in a Notepad Window over here, just so we can copy it over to Router 2 once we're done. So now that I've got that copied off, we're actually going take these ACLs and we're going to build a Route Map against these Access Control Lists. We'll do that in the next video so we have plenty of time to look at all the different options for Route Maps.
Tutorial Information
| Course: | Implementing Cisco IP Routing (642-902 ROUTE) |
| Author: | Greg Dickinson |
| SKU: | 34291 |
| ISBN: | 978-1-61866-028-2 |
| Release Date: | 2011-12-28 |
| Duration: | 10 hrs / 105 lessons |
| Work Files: |
Yes |
| Captions: | No |
| Compatibility: |
Vista/XP/2000, OS X, Linux QuickTime 7, Flash 8 |
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