add a vpn note

Author: halkazwini

articles/route-server/quickstart-configure-route-server-cli.md

@@ -167,6 +167,8 @@ RouteServerIps  : {10.5.10.4, 10.5.10.5}  "virtualRouterAsn": 65515,
 
 If you have an ExpressRoute and an Azure VPN gateway in the same virtual network and you want them to exchange routes, you can enable route exchange on the Azure Route Server.
 
+[!INCLUDE [VPN gateway note](../../includes/route-server-note-vpn-active-active.md)]
+
 > [!IMPORTANT]
 > For greenfield deployments make sure to create the Azure VPN gateway before creating Azure Route Server; otherwise the deployment of Azure VPN Gateway will fail.
 > 

articles/route-server/quickstart-configure-route-server-portal.md

@@ -92,6 +92,8 @@ You'll need the Azure Route Server's peer IPs and ASN to complete the configurat
 
 If you have an ExpressRoute gateway and/or VPN gateway and you want them to exchange routes with the Route Server, you can enable route exchange.
 
+[!INCLUDE [VPN gateway note](../../includes/route-server-note-vpn-active-active.md)]
+
 1. Go to [Route Server](./overview.md) in the Azure portal and select the Route Server you want to configure.
 
 1. Select **Configuration** under *Settings* in the left navigation panel.

articles/route-server/quickstart-configure-route-server-powershell.md

@@ -144,8 +144,7 @@ RouteServerIps : {10.5.10.4, 10.5.10.5}
 
 If you have an ExpressRoute and an Azure VPN gateway in the same virtual network and you want them to exchange routes, you can enable route exchange on the Azure Route Server.
 
-> [!IMPORTANT]
-> Azure VPN gateway must be configured in **active-active** mode and have the ASN set to 65515.
+[!INCLUDE [VPN gateway note](../../includes/route-server-note-vpn-active-active.md)]
 
 1. To enable route exchange between Azure Route Server and the gateway(s), use [Update-AzRouteServer](/powershell/module/az.network/update-azrouteserver) with the *-AllowBranchToBranchTraffic* flag:
 

includes/route-server-note-vpn-active-active.md

@@ -0,0 +1,9 @@
+---
+author: halkazwini
+ms.author: halkazwini
+ms.service: route-server
+ms.topic: include
+ms.date: 04/18/2023
+---
+> [!IMPORTANT]
+> Azure VPN gateway must be configured in **active-active** mode and have the ASN set to 65515.