# VIF and VIF groups
<a name="vif-vif-groups"></a>

Local gateway virtual interfaces (VIFs) is a logical interface component of Outposts racks that sets up VLAN, IP, and BGP connectivity between your Outposts networking devices and an on-premise networking device for local gateway connectivity. VIFs are created within VIF groups. VIF groups are logical groupings of VIFs and VIFs are created within VIF groups. You must create four local gateway VIFs within each VIF group.

**Topics**

**To create a local gateway VIF group and VIFs**

1. Open the AWS Outposts console at [https://console.aws.amazon.com/outposts/](https://console.aws.amazon.com/outposts/home).

1. To change the AWS Region, use the Region selector in the upper-right corner of the page.

1. From the navigation pane, choose **LGW virtual interface (VIF) groups**.

1. Choose **Create VIF group**.

1. In the **LGW VIF group settings** section:
   + Enter a name for the VIF group.
   + Choose the local gateway.
   + Add your BGP ASN.

1. In the **LGW virtual interface** section:
   + Enter a name for the VIF.
   + Choose the link aggregation group (LAG).
   + Add a virtual local area network (VLAN).
   + Add local IP address.
   + Add a peer IP address.
   + Add the peer BGP ASN.
**Note**  
 You must create four local gateway virtual interfaces (LGW VIFs). Each VIF must be associated to a link aggregation group (LAG) within the VIF group. This ensures complete connectivity between your Outpost and on-premise network devices. Incomplete VIF groups can not be associated with local gateway route tables to create a routing domain.
To ensure proper point-to-point connectivity between your Outpost and on-premises router, it's essential to match each LAG with its corresponding local gateway VIF. You can review these configurations in the **Link Aggregation Groups (LAGs)** section of the AWS Outposts console, where you'll find details about your LAGs and their associated service link VIFs networking configurations. This information helps you verify the correct mapping of your network connections between your Outpost and on-premises infrastructure.
The local gateway IP addresses can’t overlap with the service link IP addresses that are associated with the same LAG. You can review your service link IP information in the **Link Aggregation Groups (LAGs)** section of the AWS Outposts console.
A local gateway VIF is ready to transfer local gateway traffic when its state is available.

1. Choose **Create a LGW VIF Group**.

**To delete a local gateway VIF**

Before deleting a virtual interfaces (VIF) from a VIF group, ensure that the local gateway VIF group is not associated with a local gateway routing domain and is disconnected from local gateway route tables. Deleting a local gateway routing domain can impact your local gateway local network connectivity.

1. Open the AWS Outposts console at [https://console.aws.amazon.com/outposts/](https://console.aws.amazon.com/outposts/home).

1. To change the AWS Region, use the Region selector in the upper-right corner of the page.

1. From the navigation pane, choose **LGW virtual interface (VIF) groups**.

1. Choose the VIF group that contains the VIF you want to delete.

1. Choose **Manage LGW VIFs**.

1. Select the VIF to be deleted.

1. Choose **Delete**.

**To add a local gateway VIF**

1. Open the AWS Outposts console at [https://console.aws.amazon.com/outposts/](https://console.aws.amazon.com/outposts/home).

1. To change the AWS Region, use the Region selector in the upper-right corner of the page.

1. From the navigation pane, choose **LGW virtual interface (VIF) groups**.

1. Choose the VIF group that you want to add the VIF to.

1. Choose **Manage LGW VIFs**.

1. Choose **Add VIF**.

1. Provide the following information:
   + Enter a name for the VIF.
   + Choose the link aggregation group (LAG).
   + Add a virtual local area network (VLAN).
   + Add local IP address.
   + Add a peer IP address.
   + Add the peer BGP ASN.
**Note**  
You must create four local gateway virtual interfaces (LGW VIFs). Each VIF must be associated to a link aggregation group (LAG) within the VIF group. This ensures complete connectivity between your Outpost and on-premise network devices. Incomplete VIF groups can not be associated with local gateway route tables to create a routing domain.
To ensure proper point-to-point connectivity between your Outpost and on-premises router, it's essential to match each LAG with its corresponding local gateway VIF. You can review these configurations in the **Link Aggregation Groups (LAGs)** section of the AWS Outposts console, where you'll find details about your LAGs and their associated service link VIFs networking configurations. This information helps you verify the correct mapping of your network connections between your Outpost and on-premises infrastructure.
The local gateway IP addresses can’t overlap with the service link IP addresses that are associated with the same LAG. You can review your service link IP information in the **Link Aggregation Groups (LAGs)** section of the AWS Outposts console.
A local gateway VIF is ready to transfer local gateway traffic when its state is available.

1. Choose **Save changes**.

**To delete a VIF group**

You can delete a VIF group if it is not associated with a local gateway routing table.

1. Open the AWS Outposts console at [https://console.aws.amazon.com/outposts/](https://console.aws.amazon.com/outposts/home).

1. To change the AWS Region, use the Region selector in the upper-right corner of the page.

1. From the navigation pane, choose **Networking** and **LGW virtual interface (VIF) groups**.

1. Choose the VIF group that you want to delete.

1. On the VIF group page, choose **Disassociate LGW routing domain**.
**Note**  
Deleting a local gateway routing domain can impact your local gateway local network connectivity.

1. On the **Delete LGW routing domain** window that appears, choose **Delete LGW routing domain**.

1. On the VIF group page, choose **Delete**.

1. On the **Delete LGW VIF group** window that appears, choose **Delete LGW VIF group**.
**Note**  
Deleting a VIF group will delete all the VIFs in the group. You cannot undo this action.