In this lab, I’ll guide you through configuring OSPF on MikroTik RouterOS v7, covering everything from assigning IP addresses and creating bridge interfaces to setting up OSPF instances, adjusting hello intervals, and adding MD5 authentication. Here’s an outline of the steps we’ll cover:

1. Assign IP Addresses – Configure IP addresses on the Ethernet interfaces.
2. Create Bridge Interfaces – Set up bridge interfaces to simulate distinct LANs.
3. Test Basic Connectivity – Verify connectivity between routers.
4. Configure OSPF Instances and Areas – Set up OSPF instances and assign routers to Area 0.
5. Verify OSPF Neighborship – Check if the routers form an OSPF neighbor relationship.
6. Modify Hello Intervals – Change hello intervals to test neighborship behavior.
7. Restore Hello Intervals – Revert intervals to re-establish neighborship.
8. Enable MD5 Authentication – Secure OSPF communications with MD5 authentication.
9. Test End-to-End Connectivity – Confirm that OSPF routes traffic between LANs.
10. Change OSPF Areas – Observe how area mismatches impact OSPF neighborship.

 

Step 1: Assign IP Addresses

On Router 1:

On Router 2:

 

Step 2: Create Bridge Interfaces

On Router 1:

On Router 2:

 

Step 3: Test Basic Connectivity

On Router 1: