NAT Problem

[smavashev]

Layer 3 SVI (192.168.20.1 255.255.255.0)

Default Router 192.168.20.1

Subnet 10.1.1.0 255.255.255.252 connecting 2801 router to 3550 with ip helper address under SVI

Eigrp is implemented sh ip route. shows routes connecting from SVI to outside public subnet.

NAT

access-list 100 ip permit 192.168.20.0 255.255.255

ip nat inside source list 100 interface fa0/1 overload

The dhcp shows pc host bindings, however router interface are not natting between the SVI and outside. (public IP) at all. What am I forgetting !

Sent from Cisco Technical Support iPhone App

[Ton V Engelen]

Hi,

did you have ip nat inside and ip nat enable configured on the SVI, and also ip nat outside and ip nat enable on the outside interface? 

Just asking, because there is little config in your post.

here s n example:

! INSIDE INTERFACE

interface Vlan1

ip adress a.b.c.1 255.255.255.0

ip nat inside

ip nat enable

! OUTSIDE INTERFACE

interface Vlan3
ip address x.y.z.1 255.255.255.0

ip nat outside
ip nat enable

ip nat pool POOL x.y.z.2 x.y.z.2 netmask 255.255.255.0

ip nat inside source list 10 pool POOL overload

access-list 10 permit a.b.c.0 0.0.0.255