Which route to add in following peering scenario for traffic forwarding ?

[Shivam Sharma]

Hi, 

I am trying a scenario as per the diagram where ABC Azure network are peered in a chain & VM-A is trying to communicate with VM-C. "Allow forwarded traffic" is enabled for all peering's. A is not directly peered with C. Will a traffic transit work over B with custom route here or is A-C direct peering the way to go. 

 

[#2]

Hi Shivam,

Not sure if you'll still need an answer to this one, but traffic between subnet A and C will not be able to be routed via B to reach each other. See also: https://docs.microsoft.com/en-us/azure/virtual-network/virtual-network-manage-peering#requirements-a...

A peering is established between two virtual networks. Peerings are not transitive. If you create peerings between:

• VirtualNetwork1 & VirtualNetwork2
• VirtualNetwork2 & VirtualNetwork3

There is no peering between VirtualNetwork1 and VirtualNetwork3 through VirtualNetwork2. If you want to create a virtual network peering between VirtualNetwork1 and VirtualNetwork3, you have to create a peering between VirtualNetwork1 and VirtualNetwork3.