back to basics...ip nat outside add-route

[Leo Gal]

Hi guys, 

sorry to disturb with this basic stuff, but Im short of time and need a bit of a push and

struggle to get it up.

situation:

R1 192.168.0.1----192.168.0.4 e0/1 R4 e0/0 30.0.0.4 ---- 30.0.0.5 R5

and want to run bidirectional NAT so that

30.0.0.5 is seen as 192.168.0.50 on segment between R1-R4 and

192.168.0.1 is seen as 30.0.0.50 on segment R4-R5.

I configured:

ip nat inside source static 192.168.0.1 30.0.0.50
ip nat outside source static 30.0.0.5 192.168.0.50 add-route

(which is just a variant of this  

ip route 192.168.0.50 255.255.255.255 Ethernet0/0 30.0.0.5)

to route the traffic going from 192.168.0.1 -> 192.168.0.50 to outside intf

so NAT catches it and does what it is supposed to, but due to

Local route neither of those works.

192.168.0.0/24 is variably subnetted, 3 subnets, 2 masks
C 192.168.0.0/24 is directly connected, Ethernet0/1
L 192.168.0.4/32 is directly connected, Ethernet0/1
L 192.168.0.50/32 is directly connected, Ethernet0/1

Im sure it is solved somewhere, but I was not able to find the link so far.

Please any hint, or show the direction, or paste the link where it is solved, appreciated in advance.

Thanks much.

LG

[paul driver · Accepted solution]

Hello

no ip nat inside source static 192.168.0.1 30.0.0.50
no ip nat outside source static 30.0.0.5 192.168.0.50 add-route

no ip route 192.168.0.50 255.255.255.255 Ethernet0/0 30.0.0.5

int x/x
description outside interface
no ip nat outside
ip nat enable

int x/x
description inside interface
no ip nat inside
ip nat enable

ip nat source static 192.168.0.1 30.0.0.50

ip nat  source static 30.0.0.5 192.168.0.50

res

Paul

[Leo Gal]

Hi Paul, 

Thank you for the solution.

How about the old syntax, on newer codes it already doesn't work?

Should I count on complete transition to nvi with my NATs whatsoever?

Thanks for opinion.

regards

Leo