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Thread: Cidr

  1. #1
    Join Date
    Feb 2012
    Posts
    12

    Default Cidr

    This whole chapter is written based around RFC1519. Which has been superseded by RFC4632.

    So for example according to RFC1519 and Chapter 4
    192.168.0.0/16 is an illegal network.

    But this is no longer the case RFC4632 deprecated the whole class A/B/C system.

    gw(config-if)#ip add 195.168.0.1 255.0.0.0
    gw(config-if)#

    the router does not complain, you can do the same on OSX, and I presume windows.

    So I guess the real question is do the CCNA test writers follow RFC1519 or RFC4632 ?

  2. #2
    Join Date
    Mar 2008
    Posts
    2,888

    Default

    A tricky one - i do not think the exam goes at deep as this (it did not when i took it). You will find subjects that say this cannot be done, when it can be done.
    Maddox Thomas-Clark 14/10/2008
    Bean Thomas-Clark 18/09/2007
    Big Evils Cisco World
    Linkedin

  3. #3
    Join Date
    Dec 2010
    Location
    Left Coast, California
    Posts
    306

    Default

    I think whether you can actually do that would depend on the version of IOS you are using, no?
    Kevin NET+SEC+A+CCNA
    'All that is not eternal is eternally out of date' ~ C.S. Lewis

  4. #4
    Join Date
    Mar 2008
    Posts
    2,888

    Default

    Maddox Thomas-Clark 14/10/2008
    Bean Thomas-Clark 18/09/2007
    Big Evils Cisco World
    Linkedin

  5. #5
    Join Date
    Dec 2010
    Location
    Left Coast, California
    Posts
    306

    Default

    cool lllllllllllllll lllllllllllllll lllllllllllllll lllll
    Kevin NET+SEC+A+CCNA
    'All that is not eternal is eternally out of date' ~ C.S. Lewis

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