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    altonv's Avatar
    altonv Posts: 4, Reputation: 1
    New Member
    		  
    #1

    Jun 18, 2007, 09:27 AM
    Subnetting for WAN
    In a WAN situation can I have

    all routers (3 different cities) using Class B IP adds 10.x.x.x

    all servers at the 3 locations using Class B 10.x.xx.xx

    and work stations using class B 172.31.x.x

    but putting everything under the same subnet mask

    Will this work?


    Is this Safe?
    Is there something what would be safer?

    Thanks.
    Alton

    where can I read more about this? Links / books.
    cajalat's Avatar
    cajalat Posts: 469, Reputation: 66
    Full Member
    		  
    #2

    Jun 18, 2007, 04:27 PM
    Quote Originally Posted by altonv
    In a WAN situation can i have

    all routers (3 different cities) using Class B IP adds 10.x.x.x

    all servers at the 3 locations using Class B 10.x.xx.xx

    and work stations using class B 172.31.x.x

    but putting everything under the same subnet mask

    Will this work?
    The answer is basically No. If you're dealing with routers then you must use a different subnet for each location.
    Quote Originally Posted by altonv
    Is this Safe?
    Is there something what would be safer?

    Thanks.
    Alton

    where can i read more about this? links / books.
    This is a good place to start:
    Cisco IP subnetting 101: Five things you should know
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