Hello, I am having some trouble getting nat working on my setup. On most examples I've found online people simply have a /30 or larger on their dialer interface and can just use that as the nat outside and its just like any other typical cisco nat. The thing is that in my case the ISP does a /31 ptp on the dialer interface then static routes a larger assignment to me (in my case a /26). I'm 99% sure I wouldnt want a /31 as my nat outside which I don't would even think could work at all. If I use public routable IP's everything works and routes properly, but for some reason nat doesn't. What I tried to do is create a subinterface with the second /30 of my /26 assignment and use that as nat outside and then created a subinterface for the lan side of the nat.
My config attempt looks like this: dialer 1 ip address 172.16.1.2 255.255.255.254 ! interface fa0/0.10 description this is the first /30 in my /26 assignement ip address x.x.x.x netmask 255.255.255.252 ! interface fa0/0.20 description this is the second /30 in my /26 assignment which i would use for my nat outside for the first nat client ip address x.x.x.x netmask 255.255.255.252 ip nat outside interface fa0/0.30 description this is the lan side of the first nat ip address 192.168.1.1 255.255.255.0 ip nat inside ! ip route 0.0.0.0 0.0.0.0 dialer1 ip nat inside source list 150 interface FastEthernet0/0.20 overload access-list 150 permit ip 192.168.1.0 0.0.0.255 any I hope you get the idea of what it looks like and can maybe shed so light on where I might be going wrong. Thanks, chris _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
