# Create a hosted private virtual interface in Amazon Direct Connect
<a name="create-hosted-private-vif"></a>

Before you begin, ensure that you have read the information in [Prerequisites for virtual interfaces](WorkingWithVirtualInterfaces.md#vif-prerequisites).

**To create a hosted private virtual interface**

1. Open the **Amazon Direct Connect** console at [https://console.amazonaws.cn/directconnect/v2/home](https://console.amazonaws.cn/directconnect/v2/home).

1. In the navigation pane, choose **Virtual Interfaces**.

1. Choose **Create virtual interface**.

1. Under **Virtual interface type**, for **Type**, choose **Private**.

1. Under **Private virtual interface settings**, do the following:

   1. For **Virtual interface name**, enter a name for the virtual interface.

   1. For **Connection**, choose the Direct Connect connection that you want to use for this interface.

   1. For **Virtual interface owner**, choose **Another Amazon account**, and then for **Virtual interface owner**, enter the ID of the account to own this virtual interface.

   1. For **VLAN**, enter the ID number for your virtual local area network (VLAN). 

   1. For **BGP ASN**, enter the Border Gateway Protocol Autonomous System Number of your on-premises peer router for the new virtual interface.

      The valid values are 1 to 4294967294. This includes support for both ASNs (1-2147483647) and long ASNs (1-4294967294). For more information about ASNs and long ASNs see [Long ASN support in Amazon Direct Connect](long-asn-support.md). 

1. Under **Additional Settings**, do the following:

   1. To configure an IPv4 BGP or an IPv6 peer, do the following:

      [IPv4] To configure an IPv4 BGP peer, choose **IPv4** and do one of the following:
      + To specify these IP addresses yourself, for **Your router peer ip**, enter the destination IPv4 CIDR address to which Amazon should send traffic. 
      + For **Amazon router peer ip**, enter the IPv4 CIDR address to use to send traffic to Amazon.
**Important**  
When configuring Amazon Direct Connect virtual interfaces, you can specify your own IP addresses using RFC 1918, use other addressing schemes, or opt for Amazon assigned IPv4 /29 CIDR addresses allocated from the RFC 3927 169.254.0.0/16 IPv4 Link-Local range for point-to-point connectivity. These point-to-point connections should be used exclusively for eBGP peering between your customer gateway router and the Direct Connect endpoint. For VPC traffic or tunnelling purposes, such as Amazon Site-to-Site Private IP VPN, or Transit Gateway Connect, Amazon recommends using a loopback or LAN interface on your customer gateway router as the source or destination address instead of the point-to-point connections.  
For more information about RFC 1918, see [Address Allocation for Private Internets](https://datatracker.ietf.org/doc/html/rfc1918).
For more information about RFC 3927, see [Dynamic Configuration of IPv4 Link-Local Addresses](https://datatracker.ietf.org/doc/html/rfc3927).

      [IPv6] To configure an IPv6 BGP peer, choose **IPv6**. The peer IPv6 addresses are automatically assigned from Amazon's pool of IPv6 addresses. You cannot specify custom IPv6 addresses.

   1. To change the maximum transmission unit (MTU) from 1500 (default) to 8500 (jumbo frames), select **Jumbo MTU (MTU size 8500)**.

   1. (Optional) Add or remove a tag.

      [Add a tag] Choose **Add tag** and do the following:
      + For **Key**, enter the key name.
      + For **Value**, enter the key value.

      [Remove a tag] Next to the tag, choose **Remove tag**.

1. After the hosted virtual interface is accepted by the owner of the other Amazon account, you can download the configuration file. For more information, see [Download the router configuration file](vif-router-config.md).

**To create a hosted private virtual interface using the command line or API**
+ [allocate-private-virtual-interface](https://docs.amazonaws.cn/cli/latest/reference/directconnect/allocate-private-virtual-interface.html) (Amazon CLI)
+ [AllocatePrivateVirtualInterface](https://docs.amazonaws.cn/directconnect/latest/APIReference/API_AllocatePrivateVirtualInterface.html) (Amazon Direct Connect API)