Connect 2 sites with same VLANs and IP addressing

[b4nerj3e]

Hi, I need to interconnect 2 sites that currently that uses the same VLANs and same IP addressing.
The goal of this is to set up a DR environment.

Currently both sites are connected via an L2 uplink, but I have the problem that both sites use the same VLANs with the same IPs, and I need to keep in each site those VLANs and IP addresses, but at the same time they are isolated networks and are not within the same broadcast domain (basically I need to reconvert this L2 into an L3).
I would like to know how to configure this. I have read that I can use VXLAN for the VLANID issue, but I do not know if it would be useful or there is another way, and then I imagine that I could send the traffic through a NAT with a new IP range (within a /30 perhaps).

This is the actual scheme.

Thank you very much.

Regards,

[Georg Pauwen]

Hello,

VXLAN probably is the better option. Post the running configs of both routers, so we can fill in the bits and pieces.

[b4nerj3e]

Hi,

I do not have access to these routers right now, but it is still a very simple configuration.
A single VLAN and network on each side, but which is the same on both sites.

[MHM Cisco World]

https://www.cisco.com/c/en/us/support/docs/ip/network-address-translation-nat/13774-3.html

[b4nerj3e]

Thanks, this looks like it might help me with the network overlapping issue, but how could I solve the problem of having the same VLAN on both sites?

[MHM Cisco World]

Friend 
same VLAN in two L3 Device (router) is overlapping.
see my above comment if you want to extended L2 over L3. 

[MHM Cisco World]

if you want to extended L2 over L3 interface then simple way is using Xconnect 

https://www.cisco.com/c/en/us/support/docs/ip/layer-two-tunnel-protocol-l2tp/116266-configure-l2-00.html

[b4nerj3e]

In this case it is the other way around, I have a L2 and I want to convert it into L3 but keeping the same IPs and VLANs in the 2 sites.

[MHM Cisco World]

Yes 

I share with you link for overlap, using same subnet in both routers.

I share with you link for extended, 

Check which solution you prefer.