Wildcard or summary route

poker911poker911 Member Posts: 4 ■■□□□□□□□□
Hi

I'm self learning on CCNA, I've coma across a question that's  confused me.

Eigrp has been enabled on R3, routing for networks 10.0.0.0/24

But R3 interfaces are 10.1.1.2 and 10.1.0.1....interfaces do not fall in the range of 10.0.0.0/24.

So you change it .....(config) no network 10.0.0.0 0.0.0.255

I'm confused as how you got 0.0.0.255?? 

Shouldn't that be 0.0.255.255? As a wild card mask? 

Please can someone explain

Kind regards 

Answers

  • volfkhatvolfkhat Member Posts: 1,072 ■■■■■■■■□□
    Fun FACT:

    Most people don't run EIGRP.

    That's something you won't read in your Cisco Press books.

    Focus on OSPF (and BGP later down the line)
  • poker911poker911 Member Posts: 4 ■■□□□□□□□□
    I'm taking the CCNA it's in the exam 
  • volfkhatvolfkhat Member Posts: 1,072 ■■■■■■■■□□
    it Sounds like the wildcard maks should really be:  0.255.255.255

    which translates into a Subnet mask of:  255.0.0.0

    So i suppose better possible answers to that question:

    no network 10.0.0.0  0.255.255.255

    or

    no network 10.1.0.0  0.0.255.255

    QED

  • DCDDCD Member Posts: 475 ■■■■□□□□□□
    We use EIGRP and the subnet you are using is 10.0.0.1 - 10.0.0.254 which is not in the range of 10.1.1.2 and 10.1.0.1. You could use a wildcard mask 0.1.255.255 or a subnet mask 255.254.0
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