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Copy file name to clipboardExpand all lines: articles/virtual-wan/how-to-virtual-hub-routing.md
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ms.service: virtual-wan
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ms.topic: how-to
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ms.date: 04/27/2021
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ms.date: 10/18/2022
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ms.author: cherylmc
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---
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# How to configure virtual hub routing
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A virtual hub can contain multiple gateways such as a Site-to-site VPN gateway, ExpressRoute gateway, Point-to-site gateway, and Azure Firewall. The routing capabilities in the virtual hub are provided by a router that manages all routing, including transit routing, between the gateways using Border Gateway Protocol (BGP). This router also provides transit connectivity between virtual networks that connect to a virtual hub and can support up to an aggregate throughput of 50 Gbps. These routing capabilities apply to Standard Virtual WAN customers.
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A virtual hub can contain multiple gateways such as a site-to-site VPN gateway, ExpressRoute gateway, point-to-site gateway, and Azure Firewall. The routing capabilities in the virtual hub are provided by a router that manages all routing, including transit routing, between the gateways using Border Gateway Protocol (BGP). This router also provides transit connectivity between virtual networks that connect to a virtual hub and can support up to an aggregate throughput of 50 Gbps. These routing capabilities apply to customers using **Standard** Virtual WANs. For more information, see [About virtual hub routing](about-virtual-hub-routing.md).
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For more information, see [About virtual hub routing](about-virtual-hub-routing.md).
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## Create a route table
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## <aname="create-table"></a>Create a route table
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1. In the Azure portal, navigate to the **virtual hub**.
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1. On the **Virtual HUB** page, in the left pane, select **Route Tables**. The **Route Tables** page will populate the current route tables for this hub.
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1. Select **+ Create route table** to open the **Create Route Table** page.
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1. On the **Basics** page, complete the following fields, then click **Labels** to move to the Labels page.
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1. In the Azure portal, navigate to the virtual hub.
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2. Under **Connectivity**, select **Routing**. On the Routing page, you see the **Default** and **None** route tables.
***Destination prefix**: You can aggregate prefixes. For example: VNet 1: 10.1.0.0/24 and VNet 2: 10.1.1.0/24 can be aggregated as 10.1.0.0/16. **Branch** routes apply to all connected VPN sites, ExpressRoute circuits, and User VPN connections.
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***Next hop**: A list of virtual network connections, or Azure Firewall.
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***Next Hop IP**: If you select a virtual network connection for Next hop, you'll see **Configure static routes** when you click **Configure**. This is an optional configuration setting. For more information, see [Configuring static routes](about-virtual-hub-routing.md#static).
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If you select a virtual network connection, you will see **Configure static routes**. This is an optional configuration setting. For more information, see [Configuring static routes](about-virtual-hub-routing.md#static).
6. Select the **Associations** tab to associate connections to the route table.
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You will see **Branches**, **Virtual Networks**, and the **Current settings** of the connections.
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:::image type="content" source="./media/how-to-virtual-hub-routing/associations.png" alt-text="Association connections to the route table":::
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1. On the **Labels** page, configure label names. Labels provide a mechanism to logically group route tables. Configure any required labels, then move to the Associations page.
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7. Select the **Propagations**tab to propagate routes from connectionsto the route table.
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1. On the **Associations**page, associate connections to the route table. You'll see **Branches**, **Virtual Networks**, and the **Current settings** of the connections. After configuring settings, move to the Propagations page.
:::image type="content" source="./media/how-to-virtual-hub-routing/associations-settings.png" alt-text="Screenshot shows Associations page with connections to the route table." lightbox="./media/how-to-virtual-hub-routing/associations-settings.png":::
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8. Select **Create** to create the route table.
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1. On the **Propagations**page, select the settings to propagate routes from connections to the route table.
In the Azure portal, locate the route table of your virtual hub. Select the route table to edit any information.
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1. Select **Create** to create the route table.
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## <aname="delete-table"></a>To delete a route table
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## Edit a route table
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In the Azure portal, locate the route table of your virtual hub. You cannot delete a Default or None route table. However, you can delete all custom route tables. Click**"…"**, and then select **Delete**.
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In the Azure portal, go to your **Virtual HUB -> Route Tables** page. To open the **Edit route table page**, click the name of the route table you want to edit. Edit the values you want to change, then click**Review + create** or **Create** (depending on the page that you are on) to save your settings.
In the Azure portal, locate the route table of your virtual hub. Click **"…"** and select **Effective Routes** to view routes learned by the selected route table. Propagated routes from the connection to the route table are automatically populated in **Effective Routes** of the route table. For more information, see [About effective routes](effective-routes-virtual-hub.md).
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In the Azure portal, go to your **Virtual HUB -> Route Tables** page. Select the checkbox for route table that you want to delete. Click **"…"**, and then select **Delete**. You can't delete a Default or None route table. However, you can delete all custom route tables.
## <aname="routing-configuration"></a>To set up routing configuration for a virtual network connection
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1. In the Azure portal, go to your **Virtual HUB -> Effective Routes** page.
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1. From the dropdowns, select the route table to view routes learned by the selected route table. Propagated routes from the connection to the route table are automatically populated in **Effective Routes** of the route table. For more information, see [About effective routes](effective-routes-virtual-hub.md).
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1. To download this information to a csv file, click **Download** at the top of the page.
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1. In the Azure portal, navigate to your virtual WAN and, under **Connectivity**, select **Virtual Network Connections**.
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1. Select **+Add connection**.
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1. Select the virtual network from the dropdown.
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1. Set up the routing configuration to associate to a route table. For **Associate Route Table**, select the route table from the dropdown.
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1. Set up the routing configuration to propagate to one or many route tables. For **Propagate to Route Table**, select from the dropdown.
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1. For **Static routes**, configure static routes for Network Virtual Appliance (if applicable). Virtual WAN supports a single next hop IP for static route in a virtual network connection. For example, if you have a separate virtual appliance for ingress and egress traffic flows, it would be best to have the virtual appliances in separate VNETs and attach the VNETs to the virtual hub.
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:::image type="content" source="./media/how-to-virtual-hub-routing/effective-routes.png" alt-text="Screenshot of Effective Routes page." lightbox="./media/how-to-virtual-hub-routing/effective-routes.png":::
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## <aname="routing-configuration"></a>Set up routing configuration for a virtual network connection
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:::image type="content" source="./media/how-to-virtual-hub-routing/routing-configuration.png" alt-text="Set up routing configuration" lightbox="./media/how-to-virtual-hub-routing/routing-configuration-expand.png":::
#This include is used in multiple articles. Before modifying, verify that any changes apply to all articles that use this include.
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1. Go to your **Virtual WAN**.
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1. In the left pane, under Connectivity, select **Virtual network connections**.
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1. In the Azure portal, go to your **Virtual WAN -> Virtual network connections** page.
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1. On the **Add connection** page, configure the connection settings. For information about routing settings, see [About routing](../articles/virtual-wan/about-virtual-hub-routing.md).
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1. On the **Virtual network connections** page, click **+Add connection**.
1. On the **Add connection** page, configure the required settings. For more information about routing settings, see [About routing](../articles/virtual-wan/about-virtual-hub-routing.md).
:::image type="content" source="./media/virtual-wan-connect-vnet-hub/add.png" alt-text="Screenshot of the Add connection page." lightbox="./media/virtual-wan-connect-vnet-hub/add.png":::
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***Connection name**: Name your connection.
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***Hubs**: Select the hub you want to associate with this connection.
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***Subscription**: Verify the subscription.
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***Resource group**: The resource group that contains the VNet.
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***Resource group**: Select the resource group that contains the virtual network to which you want to connect.
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***Virtual network**: Select the virtual network you want to connect to this hub. The virtual network you select can't have an already existing virtual network gateway.
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***Propagate to none**: This is set to **No** by default. Changing the switch to **Yes** makes the configuration options for **Propagate to Route Tables** and **Propagate to labels** unavailable for configuration.
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***Associate Route Table**: You can select the route table that you want to associate.
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***Static routes**: You can use this setting to specify next hop.
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1. Once you've completed the settings you want to configure, select **Create** to create the connection.
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***Associate Route Table**: From the dropdown, you can select a route table that you want to associate.
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***Propagate to labels**: Labels are a logical group of route tables. For this setting, select from the dropdown.
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***Static routes**: Configure static routes, if necessary. Configure static routes for Network Virtual Appliances (if applicable). Virtual WAN supports a single next hop IP for static route in a virtual network connection. For example, if you have a separate virtual appliance for ingress and egress traffic flows, it would be best to have the virtual appliances in separate VNets and attach the VNets to the virtual hub.
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***Bypass Next Hop IP for workloads within this VNet**: This setting lets you deploy NVAs and other workloads into the same VNet without forcing all the traffic through the NVA. This setting can only be configured when you're configuring a new connection. If you want to use this setting for a connection you've already created, delete the connection, then add a new connection.
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1. Once you've completed the settings you want to configure, click **Create** to create the connection.
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