Lab 6.2.2 Configuring OSPF Authentication

Step 1: Connect the equipment
  1. Connect Router 1 Serial 0/0/0 interface to Router 2 Serial 0/0/0 interface using a serial cable.
  2. Connect Router 1 Fa0/0 interface to Switch 1 Fa0/1 port using a straight-through cable.
  3. Connect each PC with a console cable to perform configurations on the router and switches.
  4. Connect Host 1 to the Switch 1 Fa0/2 port using a straight-through cable.
  5. Connect a crossover cable between Host 2 and the Fa0/0 interface of Router 2.

Step 2: Perform basic configuration on the routers
  1. Connect a PC to the console port of the routers to perform configurations using a terminal emulation program.
  2. Configure Router 1 with a hostname, console, Telnet, and privileged passwords according to the table diagram.
  3. Configure Router 2 with a hostname, console, Telnet, and privileged passwords according to the table diagram.

Step 3: Configure and verify OSPF on the routers
  1. Configure single area OSPF on R1 and R2. All interfaces will belong to Area 0.
  2. Verify the OSPF configuration using the show ip route command on both routers.

Step 4: Configure and verify OSPF authentication
OSPF allows for both plain text authentication and encrypted authentication.

Step 5: Reflection
  1. Why would OSPF authentication be configured in a network? Jawaban : To prevent unauthorized access to routing information or to prevent unauthorized injection of routing information into the network. Routers in an OSPF area will only form adjacencies with other routers that have authentication set.
  2. Can one OSPF area have different OSPF configuration parameters than another area?Jawaban : Yes, configuration is on a per area basis.
Can a single OSPF router have multiple authentication passwords configured? Jawaban :Yes, different areas can be configured differently as well as different interfaces.

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