Lab 50:
Configuring OSPF on Non-Broadcast Networks
Lab Objective:
The objective of this lab exercise is for you to learn and understand how to enable OSPF on Non-Broadcast network types. These include Frame Relay and SMDS.
Lab Purpose:
Enabling OSPF on Non-Broadcast network types is a fundamental skill. OSPF is the most popular Interior Gateway Protocol (IGP) and it is imperative to understand how OSPF adjacencies are established on Non-Broadcast network types. OSPF uses the concept of Areas. In order for two OSPF-enabled routers to establish an adjacency, they must reside in the same OSPF Area. Unlike EIGRP which uses Autonomous System Numbers, OSPF is enabled using a locally significant Process ID. As a Cisco engineer, as well as in the Cisco CCNA exam, you will be expected to know how to enable OSPF on point-to-point network types.
Certification Level:
This lab is suitable for CCNA certification exam preparation
Lab Difficulty:
This lab has a difficulty rating of 8/10
Readiness Assessment:
When you are ready for your certification exam, you should complete this lab in no more than 15 minutes
Lab Topology:
Please use the following topology to complete this lab exercise:
Task 1:
This lab will only be concerned with configuration on R1, R2, and R3. To begin with, configure the hostnames on routers R1, R2 and R3 as illustrated in the topology.
Task 2:
Enable the Serial interfaces of R1, R2, and R3 for Frame Relay encapsulation and use static maps for each router to the other two routers. For example, create a static Frame Relay map on R1 to both R2 and R3.
Task 3:
Enable OSPF in Area 0 between R1, R2 and R3. You know that Frame Relay is a NBMA technology, therefore, the default OSPF Network Type would be Non-Broadcast, therefore use this as a hint to establish OSPF adjacencies. As another hint, R1 should have an adjacency to R2 and R3, and R2 and R3 should each have an adjacency to R1.
Task 4:
Verify the correct OSPF network type on any router Serial interface. Finally, verify that OSPF adjacencies have been established. You need to complete your OSPF configuration to establish adjacencies.