OSPF Lab 001 Challenge Can you fix it

Previous Next

Download Lab: GNS3

 Cisco IOSv        (vios-adventerprisek9-m.vmdk.SPA.156-2.T)

This topology configured for both EIGRP and OSPF routing protocols, EIGRP runs in the global routing table whereas OSPF runs on top the EIGRP in the separate vrf instance called OSPF. Subnets of each router in vrf OSPF configured under the interface Loopback 100. R1 and R2 are in the area 0, all routers connected to R1 via GRE tunnel interfaces. GRE tunnels use routers’ loopback 0 interfaces’ addresses for tunnel sources and destinations parameters. R1 is hub router for OSPF domain acts as ABR and also as ASBR since it propagates default route unconditionally.



Challenge 1:
It appears that satellite routers R2 through R8 of R1 are fully adjacent and neighbor relationships are established but despite the fact that these routers having all subnets in their OSPF databases when you issue the command show ip route vrf OSPF ospf only the default route is present in the routing tables. Investigate the reason for this mysterious behavior and come up with the right solution to fix this problem.

Challenge 2:

When you are done with task 1, you have to decrease the size of the OSPF databases in the domain, implement a solution to improve the way routers lookup the routing tables. Subnets of each router have to be represented with single /22 prefix.

Challenge 3:
Implement one security technique in the way that if you change the password both routing protocols and the GRE tunnels will be affected.


Popular Posts