Lab 7.2.1 Passive-interface and static route

Objective:

Configure OSPF with a passive-interface, static route and a default route.

Scenario:

You are having some problems on you WAN. Several of the routers do not have enough memory to utilize OSPF. You must setup static and default routes to maintain connectivity.

From the "Router B" console

1. Enter show ip route

Which router is advertising the route to 206.202.33.0/24 ?

2. Enter show ip ospf neighbor and list below your findings:

3. Enter ping 206.202.33.1

Is the ping successful?

4. To configure the passive-interface issue the following commands:

  • router-b(config)#router ospf 1
  • router-b(config-router)#passive-interface serial 0/0
  • router-b(config-router)#Control Z

5. Enter clear ip route * and wait 30 seconds and then ping 206.202.33.1

Is the ping successful?

6. Enter show ip route

Is the route to 206.202.33.0/24 still listed in the routing table?

7. Enter show ip ospf neighbor

What happened to one of our OSPF neighbors?

From the "Router A" console

8. Enter show ip route

List below the routes that are available.

From the "Router B" console

9. Issue the following commands to setup a static route to the network:

  • router-b(config)#ip route 206.202.33.0 255.255.255.0 206.202.32.6
  • router-b(config)#Control Z

10. Enter show ip route

What is the administrative distance to 206.202.33.0/24? Why?

11. Enter ping 206.202.33.1

Is the ping successful?

From the "Router A" console

12. Enter show ip route

List below the routes that are available.

Is there a gateway of last resort?

13. Issue the following commands to setup a static default route to the network:

  • router-a(config)#ip route 0.0.0.0 0.0.0.0 206.202.32.5
  • router-a(config)#Control Z

14. Is there a gateway of last resort?

15. Enter ping 206.202.0.2

Is the ping successful?

From the "Router C&D" consoles

16. Enter show ip route

Is there a route for 206.202.33.0 on both routers? Why?

From the "Router B" console

  • router-b(config)#router ospf 1
  • router-b(config-router)#redistribute static
  • router-b(config)#Control Z

From the "Router C&D" consoles

17. Enter show ip route

Is there a route for 206.202.33.0 ?

What is E2?