05-13-2017 06:19 PM - edited 03-08-2019 10:34 AM
My network looks like this: http://imgur.com/yr3VUvl. I have tried the normal way of configuring nat, that is to set the ip nat outside on the serial towards ISP and ip nat inside on the serial towards R2. I have also permitted both the serial network and LAN network connected to R2. I have also added a default route towards the ISP and a static route from the ISP towards the HQ. But I am still unable to ping the ISP from the host.
05-13-2017 07:24 PM
2901 (r2) needs a default route towards 2901 (HQ) and 2901 (HQ) needs a default route towards the ISP. Also 2901 (HQ) needs a static route for PC and server subnet pointing to 2901 (r2).
HTH
05-14-2017 07:02 PM
Hi
You should have something like that on your 2901 HQ router
interface serial0/0
description TO-ISP
ip address 10.0.0.3 255.255.255.0
ip nat outside
interface serial 0/1
description TO-R2
ip address 192.168.1.1 255.255.255.0
ip nat inside
ip nat inside source list PRIVATE-NETS interface Serial 0/0 overload
ip route 0.0.0.0 0.0.0.0 10.0.0.1 name INTERNET
ip route <internal networks> <subnet mask> <IP of R2's next hop>
ip access-list standard PRIVATE-NETS
permit any
*To test you could create just a loopback on ISP router and nothing else, example:
interface lo 100
ip add 8.8.8.8 255.255.255.255
* Remember to use routing betwen HQ and R2 in order to advertise a default route and know how to reach the internal networks.
Hope it is useful
:-)
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