Added details

charwen · web-flow · commit f15fed869bf2 · 2019-05-20T12:52:09.000-07:00
diff --git a/articles/expressroute/expressroute-about-virtual-network-gateways.md b/articles/expressroute/expressroute-about-virtual-network-gateways.md
@@ -12,7 +12,7 @@ ms.custom: seodec18
 
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 # About ExpressRoute virtual network gateway and FastPath
-To connect your Azure virtual network and your on-premises network via ExpressRoute, you must create a virtual network gateway first. A virtual network gateway serves two purposes: exchange IP routes between the networks and route network traffic. This article explains gateway types, gateway SKUs and estimated performance by SKU. This article also explains ExpressRoute FastPath, a feature that enables the network traffic from your on-premises network to bypass the virtual network gateway to improve performance.
+To connect your Azure virtual network and your on-premises network via ExpressRoute, you must create a virtual network gateway first. A virtual network gateway serves two purposes: exchange IP routes between the networks and route network traffic. This article explains gateway types, gateway SKUs and estimated performance by SKU. This article also explains ExpressRoute [FastPath](#fastpath), a feature that enables the network traffic from your on-premises network to bypass the virtual network gateway to improve performance.
 
 [!INCLUDE [updated-for-az](../../includes/updated-for-az.md)]
 
@@ -55,7 +55,7 @@ Zone-redundant gateways use specific new gateway SKUs for ExpressRoute gateway.
 
 The new gateway SKUs also support other deployment options to best match your needs. When creating a virtual network gateway using the new gateway SKUs, you also have the option to deploy the gateway in a specific zone. This is referred to as a zonal gateway. When you deploy a zonal gateway, all the instances of the gateway are deployed in the same Availability Zone.
 
-## FastPath
+## <a name="fastpath"></a>FastPath
 ExpressRoute virtual network gateway is designed to exchange network routes and route network traffic. FastPath is designed to improve the data path performance between your on-premises network and your virtual network. When enabled, FastPath sends network traffic directly to virtual machines in the virtual network, bypassing the gateway. 
 
 FastPath is available on [ExpressRoute Direct](expressroute-erdirect-about.md) only. In other words, you can enable this feature only if you [connect your virtual network gateway](expressroute-howto-linkvnet-arm.md) to an ExpressRoute circuit created on an ExpressRoute Direct port. In addition, your virtual network gateway must be either Ultra Performance or ErGw3AZ.
