For new deployments, this connectivity is blocked by default. To allow this connectivity, you can enable these [ExpressRoute gateway toggles](virtual-wan-expressroute-portal.md#enable-or-disable-vnet-to-virtual-wan-traffic-over-expressroute) in the "Edit virtual hub" blade and "Virtual network gateway" blade in Portal. However, it is recommended to keep these toggles disabled and instead [create a Virtual Network connection](howto-connect-vnet-hub.md) to directly connect standalone VNets to a Virtual WAN hub. Afterwards, VNet to VNet traffic will traverse through the Virtual WAN hub router, which offers better performance than the ExpressRoute path. The ExpressRoute path includes the ExpressRoute gateway, which has lower bandwidth limits than the hub router, as well as the Microsoft Enterprise Edge routers/MSEE, which is an extra hop in the datapath.
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