How to use 951Ui-2HnD with external DHCP server?

RouterOS Beginner Basics
1

At this moment we have got the following situation:

  1. All computers on the 192.168.20.0/24 network can see each other - this is ok

  2. All computers on the 192.168.20.0/24 network can see the main server at 10.45.2.12 - this is ok

  3. All computers on the 192.168.20.0/24 network have access to the internet - this is ok

  4. The main server at 10.45.2.12 can not see any computers on the 192.168.20.0/24 network - this is wrong.

  5. 951Ui-2HnD serves as DHCP server for the 192.168.20.0/24 network - this is wrong.

We need:

  1. The main server at 10.45.2.12 to see every computer on the 192.168.20.0/24 network

  2. To disable 951Ui-2HnD DHCP function and use 10.45.2.64 as our DHCP server. The reason for this id that we want main server to have access to static DHCP reservation database.

2

I’d suggest to post slightly larger image. About the size where texts would be readable. Plus including what’s A, B, C, D and R1 in your description might help too.