Merge pull request #192808 from duongau/erfaq

ExpressRoute FAQ - add connectivity scope question

Author: hmacgregor1

articles/expressroute/expressroute-faqs.md

@@ -3,10 +3,9 @@ title: FAQ - Azure ExpressRoute | Microsoft Docs
 description: The ExpressRoute FAQ contains information about Supported Azure Services, Cost, Data and Connections, SLA, Providers and Locations, Bandwidth, and other Technical Details.
 services: expressroute
 author: duongau
-
 ms.service: expressroute
 ms.topic: conceptual
-ms.date: 03/29/2021
+ms.date: 03/24/2022
 ms.author: duau
 
 ---
@@ -294,16 +293,23 @@ You will also have to follow up with your connectivity provider to ensure that t
 
 ### How do I change the bandwidth of an ExpressRoute circuit?
 
-You can update the bandwidth of the ExpressRoute circuit using the Azure Portal, REST API, PowerShell, or Azure CLI.
+You can update the bandwidth of the ExpressRoute circuit using the Azure portal, REST API, PowerShell, or Azure CLI.
 
 ### I received a notification about maintenance on my ExpressRoute circuit. What is the technical impact of this maintenance?
 
 You should experience minimal to no impact during maintenance if you operate your circuit in [active-active mode](./designing-for-high-availability-with-expressroute.md#active-active-connections). We perform maintenance on the primary and secondary connections of your circuit separately. During maintenance you may see longer AS-path prepend over one of the connections. The reason is to gracefully shift traffic from one connection to another. You must not ignore longer AS path, as it can cause asymmetric routing, resulting in a service outage. It is advisable to configure [BFD](expressroute-bfd.md) for faster BGP failover between Primary and Secondary connection in the event a BGP failure is detected during maintenance. Scheduled maintenance will usually be performed outside of business hours in the time zone of the peering location, and you cannot select a maintenance time.
 
 ### I received a notification about a software upgrade or maintenance on my ExpressRoute gateway. What is the technical impact of this maintenance?
 
-You should experience minimal to no impact during a software upgrade or maintenance on your gateway. The ExpressRoute gateway is comprised of multiple instance and during upgrades, instances are taken offline one at a time. While this may cause your gateway to temporarily support lower network throughput to the virtual network, the gateway itself will not experience any downtime.
+You should experience minimal to no impact during a software upgrade or maintenance on your gateway. The ExpressRoute gateway is composed of multiple instances and during upgrades, instances are taken offline one at a time. While this may cause your gateway to temporarily support lower network throughput to the virtual network, the gateway itself will not experience any downtime.
+
+## ExpressRoute SKU scope access
+
+### What is the connectivity scope for different ExpressRoute circuit SKUs?
+
+The following diagram shows the connectivity scope of different ExpressRoute circuit SKUs. In this example, your on-premises network is connected to an ExpressRoute peering site in London. With a Local SKU ExpressRoute circuit you can connect to resources in Azure regions in the same metro as the peering site. In this case, your on-premises network can access UK South Azure resources over ExpressRoute. For more information, see [What is ExpressRoute Local?](#what-is-expressroute-local). When you configure a Standard SKU ExpressRoute circuit, connectivity to Azure resources will expand to all Azure regions in a geopolitical area. As explained in the diagram, your on-premises can connect to resources in West Europe and France Central. To allow your on-premises network to access resources globally across all Azure regions, you'll need to configure an ExpressRoute premium SKU circuit. For more information, see [What is ExpressRoute premium?](#what-is-expressroute-premium).
 
+:::image type="content" source="./media/expressroute-faqs/sku-scope.png" alt-text="Diagram of connectivity scope for different ExpressRoute circuit SKUs.":::
 
 ## ExpressRoute premium