Task 4.8


I am having problems configuring an IPIP tunnel between Sw1 and R5
on my personal equipment. I have built the tunnel with IPs advertised
into Area 0, and have ensured that the tunnel destinations are not
learned via OSPF

I am pretty sure that this is an issue with my equipment. When I
throw down the same configuration into Dynamips it works and switch 1
learns the Area 0 routes from R5.

Is there something Im missing in the configurations on the real equipment?


  • I watched both of your vids.   That's a pretty sweet error.  I'm running the following:


    Switch   Ports  Model              SW Version              SW Image           
    ------   -----  -----              ----------              ----------         
    *    1   52     WS-C3560-48PS      12.2(25)SEE4            C3560-ADVIPSERVICESK

    Configuration register is 0xF

    RSRack1SW1#show int tun 57
    Tunnel57 is up, line protocol is up
      Hardware is Tunnel
      Interface is unnumbered. Using address of Vlan7 (
      MTU 1514 bytes, BW 9 Kbit, DLY 500000 usec,
         reliability 255/255, txload 1/255, rxload 1/255
      Encapsulation TUNNEL, loopback not set
      Keepalive not set
      Tunnel source, destination, fastswitch TTL 255
      Tunnel protocol/transport IP/IP, key disabled, sequencing disabled


    RSRack1SW1#s ip os nei

    Neighbor ID     Pri   State           Dead Time   Address         Interface         0   FULL/  -        00:00:39      Tunnel57         1   FULL/DR         00:00:39      Vlan57

    RSRack1SW1#s ip ro os is subnetted, 1 subnets
    O E2 [110/20] via, 00:17:51, Tunnel57 is variably subnetted, 8 subnets, 3 masks
    O IA [110/11111] via, 00:17:51, Tunnel57
    O IA [110/11175] via, 00:17:51, Tunnel57
    O IA [110/11175] via, 00:17:51, Tunnel57
    O IA [110/11239] via, 00:17:51, Tunnel57
    O IA [110/11239] via, 00:17:51, Tunnel57
    O [110/11175] via, 00:17:51, Tunnel57
    O IA [110/11240] via, 00:17:51, Tunnel57 is variably subnetted, 5 subnets, 2 masks
    O [110/11112] via, 00:17:51, Tunnel57
    O [110/11176] via, 00:17:51, Tunnel57
    O [110/11240] via, 00:17:51, Tunnel57
    O [110/11176] via, 00:17:51, Tunnel57


    I'm not sure why you're using 12.25 SE, the Lab prep guide uses c3560-advipservicesk9-mz.122-25.SEE2.bin.  I decided on the later of the service releases in those series, but I think that would clear up your issue as well.

    I'm fairly sure you have access to this page since you built your lab, but I'll post the link again anywho.  BTW, I like the video's, it's interesting to watch from the perspective.





  • FYI, I checked out the software config guide and it still shows that tunnels are unsupported.... however, it does work :)




  • Thanks for taking a look.  I am at a loss.  I will be cycling out my set of switches in the coming weeks anyways.  Just frustrating because when I run into hardware issues, it hijacks all the time I had set aside for a practice lab.  I guess there is something to be said for rack rentals.

    Thanks again...


  • Hello, please can u tell me what tool do you user to capture the video and then post it at youtube.






    Santiago E

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