# Create IP Transit

## Prerequisites

* The IP transit service is based on Zenlayer backbone network, so you must have Active port access to the backbone network to create this service. See [Create a Port](https://docs.console.zenlayer.com/welcome/cloud-networking/get-started/create-a-port) for more details.
* For BGP Routing Mode, please [Authorize ASN or AS-SET](https://docs.console.zenlayer.com/welcome/global-bgp/authorize-asn) required for BGP interconnect first.

## Procedures

{% stepper %}
{% step %}

#### **IP Transit Basic Configuration**

<figure><img src="https://3201622183-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F9X3FDdkCL2HzhbPpPMFt%2Fuploads%2FcHBLo13PU7MSlgdTQF2e%2Fimage.png?alt=media&#x26;token=c5111609-99b8-4d6f-ac01-8710f8959b54" alt=""><figcaption></figcaption></figure>

1. Select a data center port\
   Select a port located in the data center where you want to access the public internet.
2. Configure the VLAN ID\
   The VLAN ID is used for accessing the L2 private connect established between your port and the IP transit.
3. *(Optional)* Enable remote IP transit\
   If you prefer not to purchase a new port at the target public internet access location, you can enable remote IPT to access the internet in that region via our backbone network.

{% hint style="info" %} <mark style="color:blue;">**Note**</mark>

<mark style="color:blue;">In the remote IP transit scenario, backbone bandwidth charges will apply based on the configured bandwidth.</mark>
{% endhint %}
{% endstep %}

{% step %}

#### IP Address Configuration

Choose a desired delivery mode.

* [**Gateway Mode**](https://docs.console.zenlayer.com/welcome/ip-transit/create-ip-transit/gateway-mode-configuration)\
  You do not possess your own IP addresses and the gateway handles routing and network translation functions. Suitable for customers with **simpler network architectures** who do not require dynamic routing.
* [**Routing Mode - Static**](https://docs.console.zenlayer.com/welcome/ip-transit/create-ip-transit/static-routing-mode-configuration)\
  You do not possess your own IP addresses and operate relatively **simple or stable network architectures** without the need for dynamic route learning.
* [**Routing Mode - BGP**](https://docs.console.zenlayer.com/welcome/ip-transit/create-ip-transit/bgp-routing-mode-configuration)\
  You possess your own IP addresses and operate **complex and frequently changing network architectures** that requires support for dynamic routing.

{% hint style="info" %} <mark style="color:blue;">**Note**</mark>

* <mark style="color:blue;">Once IP Transit is created, the delivery mode cannot be changed. Please proceed with caution.</mark>
* <mark style="color:blue;">See</mark> [<mark style="color:purple;">Comparison of IPT Delivery Modes</mark>](https://docs.console.zenlayer.com/welcome/ip-transit/create-ip-transit/comparison-of-ip-transit-delivery-modes) <mark style="color:blue;">for detailed features of each mode.</mark>
  {% endhint %}
  {% endstep %}

{% step %}

#### Network Bandwidth Configuration

<figure><img src="https://3201622183-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F9X3FDdkCL2HzhbPpPMFt%2Fuploads%2F8OY6zY9neSV3MTBBxaAj%2Fimage.png?alt=media&#x26;token=9d2ba5ae-57cd-465d-803d-8a6d3568c453" alt=""><figcaption></figcaption></figure>

Configure the bandwidth of the IP transit.

* [Flat Rate](https://docs.console.zenlayer.com/welcome/pricing/network-billing/flat-rate) with fixed bandwidth
* [Burstable 95th](https://docs.console.zenlayer.com/welcome/pricing/network-billing/aggregated-burstable-95th) with commit rate and burst capacity

{% hint style="info" %} <mark style="color:blue;">**Note**</mark>

<mark style="color:blue;">In the remote IP transit scenario, the configured network billing model applies to both backbone bandwidth and IP transit bandwidth.</mark>
{% endhint %}
{% endstep %}

{% step %}

#### IP Transit Network Name and Resource Group

Label your IP transit and select a resource group for better resource management.
{% endstep %}
{% endstepper %}

## What to Do Next

After IP transit creation, you will view the customer and provider IPv4 addresses for interconnection on the IP transit list page. Please configure your client device accordingly based on this information.

<figure><img src="https://3201622183-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F9X3FDdkCL2HzhbPpPMFt%2Fuploads%2F5lQynoAb7dwf3f70dkKL%2Fimage.png?alt=media&#x26;token=44fdc84d-492b-4fe5-8776-f523b6331219" alt=""><figcaption></figcaption></figure>