Connecting two remote LANs through a VPN connection

Question

1)   
I am trying to interconnect
two LANs as you see below.
2)   
The scenario is to interconnecting two LANs with a
single domain “domain.local” in order to have
two domain controllers backing up each other. We already have a Domain Controller “SRVDC1.domain.local” in our local network “LAN1” and another Server which is going to be as both our
secondary domain controller and VPN Server “SRVDC3.domain.local” in our remote network “LAN2” where is the
Netelligent Network. I am trying to make these two servers (our two LANs)
visible to each other by a MikroTik Cloud Router Switch solution.
3)   
I am using a
MikroTik Router as a PPTP Client to VPN to our
Remote Server SRVDC3 (87.75.45.66/29).
4)   
All the computers in
LAN1, including Server SRVDC1, have a gateway set on “192.168.10.1” which is a
Asus WiFi Router as a core switch which is connected to our Fiber Optic Translator. <o:p></o:p>
5)   
To prevent and minimize any down-time risk during the configuration, I have isolated one computer “table2pc5.domain.local” as sample of the
whole network; by changing its gateway set to 192.168.10.6 (the
Ether3-Slave-Lacal-interface on the MikroTikRouter).
I am going to replace the “Asus WiFi Router” shown in the map, by the
MikroTik Router later, after making sure that everything would work properly, so, everything is going to be naturalized after.
6)   
My
solution simply can be explained as below:
a.   
Providing
another interface in addition to “Netelligent Network” adapter.
b.   
To
assign a LAN-based IP (in network range 192.168.10.0/24) to the added adapter (Microsoft Virtual Adapter)
c.   
Configuring
SRVDC3 in Netelligent network “LAN2” as
a Remote Access Server (VPN Server).
d.   
To provide a
MikroTik Router/Firewall on the Edge of the
LAN1 as VPN Client.
e.   
Configure
MikroTik Router VPN PPTP connection to
SRVDC3 via the Internet.
f.     
To have
two LANs connected through a permanent VPN connection.
7)   
IP Addresses for the three EDGE-Devices (SRVDC1
ßàMikroTik
Router ßàSRVDC3)
are as below:
a.   
SRVDC1:
Interface:          
Local Area Connection
IP Address:          
192.168.10.2/24
Gateway:          
192.168.10.1/24         
(Asus WiFi Router)
DHCP Server Pool:          
192.168.10.1 – 192.168.10.254 (exclusions 10.1-10.50 , 10.50-10.99 , 10.200-10.254)
b.   
MikroTikRouter:
Interface:          
Local IP          
IP Address:     192.168.88.1/24
Interface:          
Ether1-gateway-master         
IP Address:     192.168.0.1/24
Interface:          
Ether2-master-local               
IP Address:     192.168.88.1/24
Interface:          
ether3-slave-local                  
IP Address:     192.168.10.6/24
DHCP Server Pool:          
192.168.10.1 – 192.168.102.254
c.   
SRVDC3:
Interface:          
Netelligent Network                
IP Address:     87.75.45.66/29
Gateway: 87.75.45.65/29
Interface:          
Microsoft Network Adapter     
IP Address:     192.168.10.50/24
Gateway: 192.168.11.1
Interface:          
PPP Adapter RAS                  
IP Address:     192.168.11.1/24                      
gateway:
8)   
The node “table7pc2.domain.local” is not able to see<o:p></o:p>
Now, I would ask you to help me to realise this solution by helping me to find the Bad-Routing problem, and letting me know how to fix it.
What NAT / Rout Paths or any configuration do I need to make this two LANs visible and recognizable to each other?
I would introduce you critical nodes which play important roles in this configuration. I have tried to colour-mark them in order to have a better recognition once you take a look at the “Ping Result” table.
The “Ping Result” table would give you an idea which nodes are able to see which others and where does problem hide itself?

Answer 1

I got my own answer :D
1) I have to right-click on my "Routing and Remote Access" Server.
2) on IPv4 tab, I should define a static IP Pool. I had it done before; but since that I had chosen a wide range as 192.168.11.0/24, every time the router was taking a different IP address; so I should define a very small pool with two 2
nodes as 192.168.11.1 and 192.168.11.2. In this way, I'll have the local address (router) as 192.168.11.2 and the remote address (my remote server) as 192.168.11.1
3) After establishment of the PPTP connection successfully, I should add an static route to the "Netelligent Network" adapter. I had it done but in the RRAS routes, so that's why it didn't work. so:
C:\SRVDC3>_ route -p add 192.168.10.0 mask 255.255.255.0 192.168.11.2
[Enter]
Now, I would be able to ping all of the computers whose their gateways are set on 192.168.10 (router)
and If I wand to see all of the computers  at the first LAN, I have to put my router at the edge of the network, instead of the ASUS WiFi Router, then change it's IP address to 192.168.10.1 or alternatively set all of the computers gateways on 192.168.10.6.