here is a part of our router configuration
description WAN Interface
ip address 71.5.x.x 255.255.255.252
description LAN Interface
ip address 124.247.x.x 255.255.255.128
ip address 172.16.x.x 255.255.0.0 secondary
no ip route-cache
no ndsp enable
no mpls route-cache
tunnel mode gre ip
tunnel source 71.5.x.x
tunnel destination 71.5.x.x
ip address 10.240.x.x 255.255.255.252
ip tcp adjust-mss 1420
ip route 0.0.0.0 0.0.0.0 tunnelx
ip route 188.8.131.52 255.0.0.0 71.5.x.x
Now i have two questing
1. Why do we have two routes.
2. I want to configure PAT.
While configuring PAT if i make int f0(WAN) as NAT outside interface nothing works and if i make tunnelxx as NAT outside interface translation does takes place(sh ip nat trans) but internet does not work. here is what i do to configure NAT.
ip nat inside
ON FE0 OR TUNNXX
ip nat ouside
access-list 1 permit 172.16.x.x 255.255.0.0
ip nat inside source list 1 interface f0 or tunnxx overload
where am i going wrong..?
thanks in advance