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Forum Replies

  1. Hello Ryan

    I notice that in your show IP route command, no EIRGP routes show up. This tells me that for some reason, no EIGRP neighbours have been created. You should at least see the and subnets separately show up. Check the neighbour table to see that they have successfully created an adjacancy. Before you configure any EIGRP summarization, try to get EIGRP alone to function correctly. Then you can add the summarization commands.

    I hope this has been helpful.


  2. andrew says:

    To check the AD of the route, issue:
    #show ip route

  3. Hi ,
    Great explanation . but have one doubt can you explain below subnetting

    R1(config)#interface fastEthernet 2/0
    R1(config-if)#ip summary-address eigrp 1

    we used /24 on loopback so how did you get this mask /23 by subnetting. can you please explain

  4. In the last page of this lesson you explain why R1 has an entry that points to null0. I understand the explanation but have always had trouble with this. Would you provide an example illustrating when the null0 interface would get used and how it protects against routing loops? Just having trouble “seeing” this. Thank you.

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