VPN Plus & DNS Server: cannot reach final network

[JOINSO]

Hi!

I have two networks that are isolated geographicly: more than 60 km.

One is my office (OFFICE) and another one is one of my customers.

In my office I have this config:

• ROUTER RT6600ax with VPN Plus & DNS Server.: 192.168.1.210
• DS913+: 192.168.1.200

In my customer, I have this config:

• ROUTER RT2600ac with VPN Plus & DNS Server.: 192.168.1.210
• DS215+: 192.168.1.200

If I try to connect using VPN Plus to the customer, it says that there is an error.
The reason is the two routers have the same IP.

If i change the remote ip's, it works, but this is not a good solution, because imagine that I have 50 customers.

I tried "Enable split tunneling", but this make that i can only see the router (over a 172.xxxx ip range), but not the DS device.

Note:

In the DNS of each network, it was defined all of the local devices, like:

Local network:
ds923plus.mydomain.com: 192.168.1.200
Remote network:
ds215plus.mydomain.com 192.168.1.200

Any idea?

 

[Rusty]

If I try to connect using VPN Plus to the customer

how exactly are you trying to connect using vpn plus?

Having two ips inside the same subnet is ok but having identical ips is considered a conflict. Also if you are trying to make a site to site connection then the subnet on one side will have to be completely changed in order to make the connection.

NAT will allow for both networks to resolve local ip address no problem but in order to make the connection, LAN subnets have to be different.

So again, how did you try to connect from one location to the other exactly?

 

[fredbert]

So you have two sites with identical local IP subnets and even IP assignments?

If trying to connect from within your office to the customer VPN Plus then I think the client device’s routing table will try to have routes added for the same subnet but having different gateways.

Why not have the same subnetting for customer sites and different for you office?