We understood in our earlier articles that there is no communication between Virtual Networks in the same region or different regions/locations. What if there is a requirement to enable communication between Virtual Networks?
Azure provides us with two solutions.
- Virtual Network Peering
- VPN Gateway.
Virtual Network peering will enable communication between Virtual Networks which is blocked by default. If we establish communication is between the Virtual Network in the same region is called Vnet Peering, if it is between the Virtual Network in different regions/locations called Global Virtual Network Peering.
Peering can be done between Virtual Networks in different Subscriptions, active directory tenents, regions, or with in the same regions.
Traffic between the peered Virtual Network will pass through the Microsoft backend network, which means reliable, high-speed connectivity and low latency network.
Let us look into a scenario of enabling Global Vnet peering between two Virtual Networks Vnet-1 (10.0.0.0/16) in Central US and Vnet-2 (10.1.0.0/16) in South India