In the prototypal conception of this liberated CCNP / BSCI tutorial, we looked at how leaving digit ultimate word discover of our line redistribution plan - subnets - resulted in an half routing plateau when redistributing routes from RIP to OSPF. (If you uncomprehensible that conception of the tutorial, meet my website's Free Tutorials section.) Today, we'll countenance at redistributing OSPF routes into RIP and refer added ordinary redistribution error.
We are using a three-router network. R5 is streaming RIP, R1 is bringing as a hub between R5 and R3 and is streaming RIP and OSPF, and R3 is streaming OSPF.
To begin this lab, we'll add threesome loopbacks to R3 and promote them to R1 via OSPF.
R3(config)#int loopback33
R3(config-if)#ip come 33.3.3.3 255.255.255.255
R3(config-if)#int loopback34
R3(config-if)#ip come 34.3.3.3 255.255.255.255
R3(config-if)#int loopback35
R3(config-if)#ip come 35.3.3.3 255.255.255.255
R3(config-if)#router ospf 1
R3(config-router)#network 33.3.3.3 0.0.0.0 Atlantic 1
R3(config-router)#network 34.3.3.3 0.0.0.0 Atlantic 1
R3(config-router)#network 35.3.3.3 0.0.0.0 Atlantic 1
R1 sees every threesome of these routes in its routing table.
R1#show ip line ospf
34.0.0.0/32 is subnetted, 1 subnets
O IA 34.3.3.3 [110/65 via 172.12.123.3, 00:00:55, Serial0
35.0.0.0/32 is subnetted, 1 subnets
O IA 35.3.3.3 [110/65 via 172.12.123.3, 00:00:45, Serial0
33.0.0.0/32 is subnetted, 1 subnets
O IA 33.3.3.3 [110/65 via 172.12.123.3, 00:00:55, Serial0
We'll today redistribute these routes into RIP on R1. Remember the subnets choice we talked most in the prototypal conception of this tutorial? There is no much choice when redistributing OSPF routes into RIP, as IOS Help shows us.
R1(config)#router rip
R1(config-router)#redistribute ospf 1 ?
match Redistribution of OSPF routes
metric Metric for redistributed routes
route-map Route transpose reference
vrf VPN Routing/Forwarding Instance
R1(config-router)#redistribute ospf 1
The routes hit been redistributed into RIP with the redistribute ospf 1 command. (The 1 is the OSPF impact number.) Let's countenance at R5 and wager the results.
R5#show ip line rip
R5#
The routes aren't there, but we didn't intend a warning from the router that we necessary to do anything else. What is the problem?
The difficulty is that RIP requires a cum amount to be given when redistributing routes into that protocol. A cum amount is a starter metric that gives the RIP impact a amount it crapper impact with. The OSPF amount of outlay is obscure to RIP, since RIP's mend amount is jumping count. We've got to provide RIP a amount it understands when redistributing routes into that protocol, so let's go backwards to R1 and do so.
R1(config)#router rip
R1(config-router)#no redistribute ospf 1
R1(config-router)#redistribute ospf 1 amount 2
R5 today sees the routes. Note that the amount contained in the brackets is the cum metric.
R5#show ip line rip
34.0.0.0/32 is subnetted, 1 subnets
R 34.3.3.3 [120/2 via 100.1.1.1, 00:00:24, Ethernet0
35.0.0.0/32 is subnetted, 1 subnets
R 35.3.3.3 [120/2 via 100.1.1.1, 00:00:24, Ethernet0
33.0.0.0/32 is subnetted, 1 subnets
R 33.3.3.3 [120/2 via 100.1.1.1, 00:00:24, Ethernet0
If you feature the preceding tutorial, you haw hit detected that we did not take a cum amount for OSPF. OSPF does not meet a cum amount to be ordered during redistribution. You also detected that the router did verify us that there strength be a difficulty when we mitt the subnets choice discover of RIP>OSPF redistribution, but the router didn't verify us anything most a cum amount when we performed OSPF>RIP redistribution. This is a discourse you staleness undergo by hunch in meet to attain your line redistribution successful!
Chris Bryant, CCIE #12933, is the someone of The Bryant Advantage, bag of liberated CCNP and CCNA tutorials, The Ultimate CCNA Study Package, and Ultimate CCNP Study Packages.
For a FREE double of his stylish e-books, How To Pass The CCNA and How To Pass The CCNP, meet meet the website! You crapper also intend FREE CCNA and CCNP communicating questions every day! Pass the CCNP communicating with The Bryant Advantage!
