I've got an old 6500 switch with an MSF card doing the routing for the switch. On one of the vlans I'd like to setup NAT, but I'm little uncertain about it. What I have is an internal network being routed to this switch via the wan, what I want is for any traffic destined for ip 10.10.10.0 255.255.255.0 to be natted to 10.45.12.128 255.255.255.192. What do I need to place on the vlan configuration and in the main configuration?
Nat doesn't really "know" as such. You can have multiple "ip nat inside" statements and only one "ip nat outside" or any combination really.
By adding another "ip nat inside" you will not effect the existing one. The key is that all you are doing is saying any traffic coming in this interface is natted or any traffic leaving this interface is natted etc. You specify IP addresses/tcp|udp ports in the access-list.