Azure Hub to Hub Vnet Peering
Dear Microsoft Q&A,
I have a Hub & Spoke topology which includes 2 Hub & Spokes. When I attach route table to Express Route gateway /subnet, the injected routes are not being propagated to On-Prem network.
Details: The objective is communicate via VNet peering, while having in one "hub" Azure Firewall and in other Express Route gateway.
As seen on attached sketch:
Hub1 knows network of Hub2 due to network peering. Hub2 knows network of Hub1 due to network peering.
In order to enable access of devices "on-prem" to Spoke1 network via ExpressRoute and Hub1 Firewall, I have attached route table to ExpressRouteGateway subnet with configuration:
10.0.1.0/24 (spoke1) Virtual Network Appliance 10.0.2.4 (Hub1 FW instance) with assumption this will be propagated to on-prem.
However, my UDR is not propagated by the ExpressRoute gateway. BGP settings is enabled on ExpressRouteGateway as well as on Route Table.
Would you have any advise on such topology/configuration?