Free CCNA Lab Troubleshooting OSPF

In this free CCNA lab, you will troubleshoot an OSPF configuration.  The routers and PCs have already been loaded running configuration. These configurations contain errors that will prevent end-to-end communication across the network. You will need to troubleshoot each router to determine the configuration errors, and then use the appropriate commands to correct the configurations. When you have corrected all of the configuration errors, all of the hosts on the network should be able to communicate with each other.

The network should also have the following requirements met:

  • OSPF routing is configured on the BR1 router.
  • OSPF routing is configured on the BR2 router.
  • OSPF routing is configured on the HQ router.
  • OSPF updates must be disabled on the LAN and Loopback interfaces.
  • The HQ router must redistribute the default route to the Loopback interface in the routing updates.
  • All OSPF routers must use a process ID of 1.
  • All OSPF routers must be in area 0.


Learning Objectives:

Upon completion of this lab, you will be able to:

  • Discover where communication is not possible.
  • Gather information about the misconfigured portion of the network along with any other errors.
  • Analyze information to determine why communication is not possible.
  • Propose solutions to network errors.
  • Implement solutions to network errors.
  • Document the corrected network.

Search for Additional OSPF Labs: [adsense_id=”4″]

  Troubleshooting-OSPF (74.8 KiB, 8,332 hits)

  Packet Tracer 5-3-3 By Cisco (48.3 MiB, 1,934 hits)
You do not have permission to download this file.

You can leave a response, or trackback from your own site.

3 Responses to “Free CCNA Lab Troubleshooting OSPF”

  1. sbentim says:

    Does anyone have the solution for this lab?

  2. Connor says:

    This is the Solution

    Do no shut down on Serial 0/0/1 on router router 3

    On router 3, Do add a network area 0. This adds the PC3 to the OSPF routing table

    On router 2 change the fa0/0 Ip address to

    Change the default gateway on PC3 to

    Thats it I think

  3. mehdidooche says:

    HQ#sh ip int brief
    Interface IP-Address OK? Method Status Protocol

    FastEthernet0/0 YES manual up up

    FastEthernet0/1 unassigned YES unset administratively down down

    Serial0/0/0 YES manual up up

    Serial0/0/1 YES manual down down

    Loopback1 YES manual up up

    Vlan1 unassigned YES unset administratively down down

    HQ(config)#interface fastEthernet 0/0
    HQ(config-if)#ip add
    HQ(config-if)#ip address
    HQ(config-if)#no shutdown

    Branch2(config)#interface s0/0/1
    Branch2(config-if)#ip add
    Branch2(config-if)#ip address

    HQ(config)#router ospf 1
    HQ(config-router)#default-information originate

Leave a Reply

What is 8 + 6 ?
Please leave these two fields as-is:
IMPORTANT! To be able to proceed, you need to solve the following simple math (so we know that you are a human) :-)


Powered by WordPress | Designed by: backlinks | Thanks to internet marketing, etiketten drucken and index backlink