We will be creating a loopback in the ISN, this loopback will be use as a BGP peer and Route Server later on the lab.

Step 1 - Create ISN Loopback

1. Click Connectivity in the top navigation bar
2. Click Actions
3. Click Create Interface

Step 2 - Enter loopback information

Set the role of the external device, Core-Rtr, correctly:

1. Type Loopback
2. Select a Device Core-Rtr
3. Loopback ID 0
4. Loopback IP 44.4.0.1
5. Click Save
6. Click X

Continue to the next section for the initial Recalculate and Deploy from Nexus Dashboard to your ISN fabric.