Virtual network peering enables you to connect virtual networks in the same region and across regions (also known as Global VNet Peering) through the Azure backbone network. Once peered, the virtual networks are still managed as separate resources.When a peering configuration is deleted on one virtual network, the other virtual network will report that peering is being disconnected.
1. Disconnected’ peering connection can only be deleted and configured again. To configure the peering connection Navigate to the Azure Portal:2. Click ‘Virtual Networks’, and select the virtual network you would like to delete and reconfigure3. Click ‘Peerings’4. Delete the peering with ‘Disconnected’ status5. Click ‘Add’6. Specify the ‘Name’ and ‘Virtual Network’ and click OK7. Verify that peering state is ‘Initiated’8. Repeat step 4-6 on the other Vnet and verify that the peering state is ‘Connected’