show ip nat translations* HSRP (Hot Standby Router Protocol)
Coming soon!* NAT traffic from the Office to the Internet (source NAT)
interface GigabitEthernet0/0 description Connection to Internet ip address 172.20.99.1 255.255.255.0 ip nat outside duplex auto speed auto interface GigabitEthernet0/1 description Connection to Office ip address 192.168.80.1 255.255.255.0 ip nat inside duplex auto speed auto ip nat pool office 172.20.99.30 172.20.99.30 netmask 255.255.255.0 ip nat inside source list 20 pool office overload access-list 20 permit 192.168.80.0 0.0.0.255* NAT traffic from the New York office to various applications hosted at the Austin Data Center (source and destination NAT)
This is a useful configuration to use when you have duplicate subnets at different locations. In this example, the very popular 192.168.1.0/24 subnet was used in both the New York office (a recent acquisition) and the Austin data center. While the best long-term solution is to migrate one of the subnets to something different, this is a quick way to permit the folks in New York to access a few resources on the 192.168.1.0/24 network at the Austin data center. Of course, this probably means that the New York office will need to get a different DNS zone, which can add complexity. So, to reiterate, this is a tolerable temporary solution. Also, in case it isn't obvious, don't ever use 192.168.1.0/24. In fact, don't ever use 192.168.x.0/24, where x is a single digit.
interface GigabitEthernet0/0 description Connection to New York Office ip address 172.20.115.1 255.255.255.0 ip nat outside duplex auto speed auto interface GigabitEthernet0/1 description Connection to Austin Data Center ip address 192.168.70.1 255.255.255.0 ip nat inside duplex auto speed auto ip nat pool newyorkoffice 172.20.115.30 172.20.115.30 netmask 255.255.255.0 ip nat outside source list 20 pool newyorkoffice overload access-list 20 permit 172.20.115.0 0.0.0.255 access-list 20 permit 172.20.111.0 0.0.0.255 ip nat inside source static 192.168.1.13 192.168.88.101 ip nat inside source static 192.168.1.21 192.168.88.102 ip nat inside source static 192.168.1.22 192.168.88.103 ip nat inside source static 192.168.1.23 192.168.88.104 ip nat inside source static 192.168.1.165 192.168.88.105Related pages: