10-19-2008 07:28 AM - edited 03-03-2019 11:59 PM
Hi,
I have a VPN lab setup between 2 routers into a vlan to act like a VPN:
Router 1 FE > Switch with Internet VLAN < Router 2 FE
The routers only have 1 FE port each, so these act as their external interface, each router has a loopback interface to act as their local LAN.
Now I want to assume that both LAN's (loopbacks) use the same IP range, I would like one of the routers to NAT so each LAN can communicate so one of the LAN's uses a completely different IP range. How can I do this? I assume I will need another device to provide the NATing?
10-19-2008 09:10 AM
It's not clear to me what exactly u want to do ??? is it that u want to configure a site to site vpn on both routers.
Also u will not need another device to do NAT
10-19-2008 09:28 AM
Hi,
As mention "I have a VPN lab setup between 2 routers" sorry if this wasn't clear.
Anyway I have a VPN lab setup and now want to assume that one of the sites IP ranges (on the loopback) is now the same range as the other site (also on the loopback), I want to NAT one site so they can ping each other.
I've created VPN's before between companies but have yet to have it where my LAN's IP clashes with a remote site/company but it will happen, so I need to practice this.
My 2 routers only have 1 FE each which go into the "internet" vlan on the switch, I have created a loopback on each for the LAN of each site.
10-19-2008 10:47 PM
Hello James,
This can be possible creating a ipsec vpn when both sites have their local lan ip address in the same subnet. Have a look at the link.
http://www.cisco.com/en/US/products/ps5855/products_configuration_example09186a0080a0ece4.shtml
Regards,
Ryel
10-19-2008 03:22 PM
i am not sure 100%
but as static nat processed first
make static nat for one of ur internal LANs
which translat the entire subnet
then make nat exmption for the nated address
and make the source of ur crypto ACL the nat address
good luck
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