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Forum Replies

  1. Hi Rene,
    So we call DMVPN is Dynamic mGRE alternatively , rignt ??

    One more confusion regarding the output …

    Spoke1#show ip route rip 
    
          1.0.0.0/32 is subnetted, 1 subnets
    R        1.1.1.1 [120/1] via 172.16.123.1, 00:00:10, Tunnel0
          3.0.0.0/32 is subnetted, 1 subnets
    R        3.3.3.3 [120/2] via 172.16.123.3, 00:00:10, Tunnel0
    

    when Spoke1 want to reach Spoke2(3.3.3.3) , what will be next hop in DMVPN Phase 1 ?? . Its showing 172.16.123.3 but all traffic will go through HUB, right ?Thanks

    br//
    zaman

  2. Hi,

    In one of last capture images, the lesson says : “Above you can see the NBMA addresses”. That is said about loopback adresses 2.2.2.2 and 3.3.3.3 that are attached to Spoke-1 and Spoke-2 routers.

    In the context of NHRP, could we say that NBMA does mean the same thing as the whole underlay network (including all “public” networks learned by the Spoke) ?

  3. Hello Maodo

    The NBMA in this particular example refers to the nature of the actual physical network, and the addressing of the physical interfaces connected to the medium. That is, the 192.168.123.X subnet. So if this is what you mean by the whole underlay network, then yes you are correct.

    I hope this has been helpful!

    Laz

  4. Hello Tariq

    It seems that others are having similar issues with the ip summary address command when using the RIP protocol. Even so, the solution is not the default-information originate command.

    These two commands do different things.

    Default-information originate will advertise default route, while ip summary-address rip 0.0.0.0 0.0.0.0 will advertise only default route and will hide topology details. Remember that the ip summary-address command can use a more specific route, such as ip summary-address rip 10.2.0.0 255.255.0.0, it does not have to be 0.0.0

    ... Continue reading in our forum

  5. Hello Laz,

    Thank you for the feedback, however I decided to simulate again with a vIOS and I received the summary-address as expected, so I guess the issue might be a bug on the initial IOS I was using which was the IOS 15.2 on a 7200.

    regards,

    Tariq

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