What I do know is that there is a router ISR G2 series 2900 and in it there are several subinterfaces (this same router is the gateway of VLAN's). As I have already informed the traffic flow is not the internet for LAN, but between local networks or different vlans.
In this specific case, the vlan subinterface 188.8.131.52/24 network is configured with ipnat inside and the other is configured as subinterface ip nat outside
My client's need, as I mentioned earlier, is that both the real ip 184.108.40.206 ip mapped 10.83.0.11 answer on ports TCP/80 and TCP/3389, however only the mapped ip 10.83.0.11 replies and while the real ip 220.127.116.11 stops responding. The real ip just back the answer when I remove the NAT configuration.
Is it possible to make it work that way?
Sorry for the delay. Yes I can ping both the 10.83.0.11 as the ip 18.104.22.168 ip. However ping works only for ip 22.214.171.124 before I configure NAT; After configuring the NAT ip 10.83.0.11 's answer and the 126.96.36.199 IP no longer responds
IOS static NAT is bidirectional and stateless so it cannot distinguish which side initiates the connection. That is why it cannot handle two entries with the same real IP 188.8.131.52. The router could not decide what to do with packets with srcIP=184.108.40.206 arriving from the server. Should the srcIP be translated or not?