Merge pull request #290684 from siddomala/RSmaintenance

added maintenance note

Author: v-dirichards

articles/route-server/route-server-faq.md

@@ -24,6 +24,11 @@ No. Azure Route Server is a service designed with high availability. Your route
 
 Yes, to ensure that routes are successfully advertised to Route Server and to configure high availability, it is required to peer each NVA instance with both instances of Route Server. It is also recommended to peer at least 2 NVA instances with both instances of Route Server. 
 
+>[!NOTE]
+> During Route Server maintenance events, BGP peering may go down between your NVA and one of Route Server's instances. As a result, if you configure your NVA to peer with both instances of Route Server, then your connectivity will remain up and running during maintenance events. 
+> 
+
+
 ### Does Azure Route Server store customer data?
 
 No. Azure Route Server only exchanges BGP routes with your network virtual appliance (NVA) and then propagates them to your virtual network.