Cisco Support Community
Showing results for 
Search instead for 
Did you mean: 
New Member

destination NAT


I am having a problem getting my head around destination NAT..

Problem I have is that I need to NAT all requests from specific IP's going to destination IP to another IP in our VM environment on This is to assist in the migration of service from 1 server to another.

so was thinking I need an ACL to sort the traffic out, and a destination NAT to change the destination IP so that all requests go to the modified one. only problem being, that I cant do static NAT based on destination...

So, do I need to reverse the process as such so that my inside interface becomes the outside and vice versa?


IP nat outside source (outside int being the one with the new VM host in it)

access-list 100 permit IP host (where f,g,h,i are specific individual hosts)
access-list 100 permit ip host
access-list 100 permit IP host
access-list 100 permit ip host

int gi1/0/1 (where this int is the DG for the VM environment where the new host IP resides)
ip add$
ip nat outside

int gi1/0/6
ip add$
ip nat inside (where this is our old host, which we need to keep active until all hosts are migrated over)

route-map NAT permit 10
match ip address 100


New Member

Hi,If I had understand your


If I had understand your problem correctly, you need the following configuration:


interface gi1/0/6
 ip address$  // NOTE: I have changed this address to bbb net
ip nat inside

interface gi1/0/1
 ip address$
ip nat outside

ip nat outside source static  // Changed the order of addresses

ip route


Hosts on bbb network must access server  as

The static route is needed because is associated with gi1/0/6 interface.


I hope this could help your configuration.


Best regards,


Pedro Lereno

CreatePlease to create content