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WAN Subnet Conflicts With LAN Subnet

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I’m trying to connect two routers a Cisco DPC3825 (r1) and DIR-655 (r2) and at the end getting the above error. i have disabled the SPI firewall on r1 and connected an ethernet cable lan to lan between the two. i don’t want to confuse with whatever the mess i have done previously, just plz tell me step by step what i should do to connect these two routers, i would really appreciate it. bunch of thanks in advance 🙂
PS: in addition, the gateway ip of r1 is 192.168.0.1 with subnet mask of 255.255.254.0 and the gateway ip of r2 is 192.168.0.2 with subnet mask of 255.255.255.0. r1 has a ip range of 192.168.0.10 to 192.168.0.128 while r2 has range of 192.168.0.100 to 192.168.0.199.

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1 Answer

  1. Given those ip address its clear you don’t understand NAT [network address translation].

    A simple rule you need to remember.
    Each wan and lan subnet has to be differnet for NAT to work

    So if of r1 WAN is 192.168.0.1 with subnet mask of 255.255.254.0
    than its LAN needs to be 192.168.1.1 subnet 255.255.255.0
    in turn this means
    r2 WAN is 192.168.1.2 and its LAN is 192.168.2.1

    Answers are only as good as the information you provide.
    How to properly post a question:
    Sorry no tech support via PM’s

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