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New Member

Site-to-site VPN between 3 sites

Here is the situation.

- Site-to-Site VPN is setup from company A to company B

- Company A needs to setup Site-to-Site VPN to Company C as well.

- Company B & C will not have access to each other.

- Equipment used, Cisco 1710 (2 interfaces).

Internal interface on Cisco is 192.168.2.***, however company C, wants us to change our internal IP to 10.1.1.***, company B wants us to stay with our current 192.168.2.***.

is there anyway possibe to make this work with purchasing another router?


Cisco Employee

Re: Site-to-site VPN between 3 sites


For the part where you want to know about LAN to LAN tunnel between the Hub and Spokes (with A being the Hub and B&C the spokes).

The following link will give you details on how to do that:

Additionally the part where one of the sites wants you to change the IP network from 192.168.2.x to 10.1.1.x, you can do the following:

ip nat inside source static route-map static_nat no-alias

route-map static_nat permit 10

match ip address 123

access-list 123 permit ip

Int e0 (inside interface)

ip Nat inside

ip policy route-map static_nat

Hope this helps,


Aamir Waheed,

Cisco Systems, Inc.



New Member

Re: Site-to-site VPN between 3 sites

thank you, i will give it a try and let you know.

New Member

Re: Site-to-site VPN between 3 sites

Removed - answered my own question :-)