Uploaded October 2014 | Updated September 2026, 6 hours ago
A step by step guide on completing the GNS3Vault Lab for CCNA OSPF.
Source for the lab files:
gns3vault.com/ccna-rs/ospf-for-ccna-1
Currently a CCENT getting ready for my CCNA testing. I figured why not record myself working on some of these labs so that I can help not only myself but others as well. Please let me know how you like the video and if you would like to see more videos like this.
-ViciousXUSMC
Goal:
All IPv4 addresses have been preconfigured for you.
Each router has a loopback0 interface.
Configure OSPF area 0 on router Durden, Paulson and Chesler. Advertise the loopback0 interfaces and make sure you have connectivity.
Configure OSPF area 1 on router Singer, Bird and Dent. Advertise the loopback0 interfaces.
You should now have full connectivity for your OSPF network. Make sure you can ping all interfaces including the loopback0 interfaces.
Change the router ID of router Singer to 44.44.44.44. Make sure you can see the change by using the appropiate show command.
Question: which router is the DR (Designated Router)and BDR (Backup Designated Router) that is connected to SW2? Can you explain why?
Change the network so router Chesler will be the DR. Test this by resetting OSPF and using the appropiate show command.
Enable MD5 authentication on the serial link between router Bird and Dent.
Enable plaintext authentication on the fastethernet link between router Bird and Dent.
Make sure all routers in area 0 send a hello packet every 4 seconds. If they don’t hear anything from their neighbor after 17 seconds they should drop the neighbor adjacency.
Advertise a default route on router Durden in OSPF. Test this by checking reachability of its loopback1 interfaces from other routers. Do not advertise the loopback1 interface in OSPF.
Configure router Dent so it will load-balance over the serial and fastethernet link for all networks.
A step by step guide on completing the GNS3Vault Lab for CCNA OSPF.
Source for the lab files:
gns3vault.com/ccna-rs/ospf-for-ccna-1
Currently a CCENT getting ready for my CCNA testing. I figured why not record myself working on some of these labs so that I can help not only myself but others as well. Please let me know how you like the video and if you would like to see more videos like this.
-ViciousXUSMC
Goal:
All IPv4 addresses have been preconfigured for you.
Each router has a loopback0 interface.
Configure OSPF area 0 on router Durden, Paulson and Chesler. Advertise the loopback0 interfaces and make sure you have connectivity.
Configure OSPF area 1 on router Singer, Bird and Dent. Advertise the loopback0 interfaces.
You should now have full connectivity for your OSPF network. Make sure you can ping all interfaces including the loopback0 interfaces.
Change the router ID of router Singer to 44.44.44.44. Make sure you can see the change by using the appropiate show command.
Question: which router is the DR (Designated Router)and BDR (Backup Designated Router) that is connected to SW2? Can you explain why?
Change the network so router Chesler will be the DR. Test this by resetting OSPF and using the appropiate show command.
Enable MD5 authentication on the serial link between router Bird and Dent.
Enable plaintext authentication on the fastethernet link between router Bird and Dent.
Make sure all routers in area 0 send a hello packet every 4 seconds. If they don’t hear anything from their neighbor after 17 seconds they should drop the neighbor adjacency.
Advertise a default route on router Durden in OSPF. Test this by checking reachability of its loopback1 interfaces from other routers. Do not advertise the loopback1 interface in OSPF.
Configure router Dent so it will load-balance over the serial and fastethernet link for all networks.
