We appreciate your patience!
Welcome to the Microsoft Q&A Platform! Thank you for asking your question here.
I apologize for the inconvenience. As I misinterpreted your query earlier, I've corrected my response below.
You must properly establish your network settings. To make sure that traffic from your on-premises network is routed through your NVA and not dropped, use the following high-level approach:
- Verify that BGP (Border Gateway Protocol) is set up on your ExpressRoute circuit to permit dynamic routing.
- Make that the routes being advertised by your on-premises BGP peers are correct. I apologize for the inconvenience. As I misinterpreted your query earlier, I've corrected my response below.
Refer: https://learn.microsoft.com/en-us/azure/expressroute/expressroute-routing#dynamic-route-exchange
You may also check out the thread below to see how routing should operate in certain instances.
If you have any further concerns, please do not hesitate to contact us.
We are pleased to help you. I look forward to your response and appreciate your time on this.
Regards,
Ganesh