Using GRE tunnel between two routers. I have CPE on the
Serial Interface of each router. Routers are connected
to the public Internet by FastEthernet0. Serial and FE0
both have public IP addresses. Using the config below,
the tunnels work perfectly.
However, now I am faced with a problem of doing this
config again, except on one router all I am going to
receive is ONE public IP address.
Question: Is there any way to accomplish the tunneling
between the routers, when one end only has 1 public IP?
Working Config
--------------
==Router 1:==
interface Tunnel0
ip address 10.0.0.2 255.255.255.0
tunnel source Serial0/0
tunnel destination 216.xxx.161.225
!
interface FastEthernet0/0
ip address 216.xxx.140.29 255.255.255.192
ip directed-broadcast
speed auto
half-duplex
!
interface Serial0/0
ip address 209.xxx.xxx.238 255.255.255.252
encapsulation frame-relay IETF
no fair-queue
frame-relay lmi-type q933a
frame-relay intf-type dce
frame-relay route 900 interface Tunnel0 900
!
ip route 216.xxx.161.225 255.255.255.255 216.xxx.140.15
==Router2:==
interface Tunnel0
ip address 10.0.0.1 255.255.255.0
tunnel source Serial1/0
tunnel destination 209.xxx.xxx.238
!
interface FastEthernet0/0
description Local ethernet
ip address 216.xxx.140.15 255.255.255.192
no ip route-cache
no ip mroute-cache
no keepalive
duplex half
!
interface Serial1/0
ip address 216.xxx.161.225 255.255.255.252
encapsulation frame-relay IETF
serial restart_delay 0
frame-relay lmi-type q933a
frame-relay intf-type dce
frame-relay route 900 interface Tunnel0 900
!
ip route 209.xxx.153.238 255.255.255.255 216.xxx.140.29
