# Add Additional IP to Switch

## Introduction 

Each Class 4 UI can support multiple dnl\_softswitch instance*.*  Each dnl\_softswitch can listen to one or more SIP IP:port.  

In the 

#### Step 1: Check the IP address in your server

You need to make sure the IP you want to use is available in the Linux environment where you are installing Class 4 dnl\_softswitch. You can use the following command to check all IP addresses:

```bash
ip addr
```

Once you confirm you have the IP address in your server's networking.  You can add the IP in UI:

#### Step 2: Go to VoIP Gateway setup page

You can click on "VoIP Gateway" on the top right menu.

![](/files/-MZ5FYrua2VtQYqK9PSy)

#### Step 3: Add one ore more SIP Gateway

Each instance of dnl\_softswitch is one SIP gateway.  Each dnl\_softswitch has a private interface for the UI to manipulate with it.

![](/files/-MZ4wTBVNHGwaMSAmE_z)

#### Step 4: Add one or more SIP Profile

You can expand on the SIP Profile within each SIP Gateway and add additional SIP IP to it. 


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://cookbook.denovolab.com/system-administration/add-additional-ip-to-switch.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.