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Azure Virtual WAN Route Maps and Reflected Routes

Microsoft have make controlling routing within a Virtual WAN much easier thanks to a combination of Routing Intent and Route Maps (in preview at time of writing). Route Maps work in the same manner (at least theoretically) to route map configuratons network administrators are used to in on-premises equipment.

In testing tehm out for a customer, I ran straight into a problem. I like to keep things tidy, and when I looked at the output of the outbound route map configuration for a site to site VPN with AWS, I didn’t like that it showed all my AWS routes being published back out to the VPN. So I configured a route map rule to drop reflected routes.

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