Hi all,
I've been finding the Cisco Networking Academy lab manual for ROUTE very helpful. but I felt it lacked a more in depth redistribution lab. I though the "Comprehensive Example of Controlling Routing Updates" from page 398 of the FLG would be a good lab, so I created it in GNS3 and added a fourth router to make it slightly more complicated.
It's given me a solid three days of practice with various different combos of route-maps and prefix lists, changing AD on various routers etc. I thought some of you might find it useful too. I've attached the diagram, feel free to pm me if you want the GNS3 files.
When you create the initial lab with just R1, R2 and R3 you'll have a routing loop. Then after you fix that you'll still have a sub-optimal routing path for a few routes. Following that, add in R4 which flips things upside-down again.
Make sure you remove any feedback (redistributed routes being re-advertised into their native protocol)
I saw a few TE posts that said that route tags were locally significant, however I proved this to be incorrect. Once you have R4 configured if you do a #sh ip route 192.168.254.0 you will see "Route tag 1000" at the bottom of the output. R4 is only redistributing one connected route from the loopback and I didn't configure any route-maps on it.
TCL script to verify:
foreach address {
10.3.7.1
10.2.7.1
192.168.2.1
172.16.31.2
172.20.20.1
10.3.7.2
10.2.7.2
192.168.1.1
172.16.31.1
192.168.2.2
192.168.1.2
192.168.254.1
192.168.253.1
} {
ping $address
}
