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How to connect two networks with different class C subnet with another network

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  • How to connect two networks with different class C subnet with another network

    Hello all,

    i have this issue, i have an old data center with two class c sub network addresses like( 192.168.5.xxx and 192.168.6.xxx ), we wont to connect this network or we can name it the old data center with other network with class A network address like(10.0.0.5) or the new data center.

    Any ideas or help please , if any one can advise, ideas please share with us.

    Best Regards





  • #2
    Re: How to connect two networks with different class C subnet with another network

    You have a couple options. If your running cisco routers and they are directly connected you can just use static routes between the two to get reachabilty. If these are point-to-point circuits PPP encap will take care of the reachabiltiy issues on its own. PPP will create a peer neighbor route on each device which is just a /32 connected route to get connectivity. If thats not an option you can always use static NAT to translate the uncommon subnets to a common subnet. So there are a few options to get this to work. The better would be to run a common subnet over the wan and either use static routes or a dynamic routing protocol.
    CCNA, CCNA-Security, CCNP
    CCIE Security (In Progress)

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