# Configuring License

When the APB boots UP, it prompts the user for a License key that can be requested by contacting [Aviz Support](https://support.aviznetworks.com/hc/en-us/requests/new). More information on Licensing can be found [here](https://aviznetworks.gitbook.io/apb/getting-started/licensing).

```sh
opb-nos login: admin
Password: 
Linux opb-nos 5.10.0-18-2-amd64 #1 SMP Debian 5.10.140-1 (2022-09-02) x86_64
You are on
  ___  ____  _____  _   _  ___   ____
 / _ \|  _ \|  _  \| \ | |/ _ \ / ___|
| | | | |_| |_|_|_/|  \| | | | |\___ \
| |_| |  __/| |_| \| |\  | |_| | ___) |
 \___/|_|   |_____/|_| \_|\___/ |____/
                      Powered by AVIZ Networks

-- Software for Open Networking in the Cloud --

Version: 20230714.2.5.0

Unauthorized access and/or use are prohibited.
All access and/or use are subject to monitoring.

Help:    www.aviznetworks.com

Device Serial Number : MT2040X05753
Enter the License Key: ffa08***************f6ec544
```

Verify the currently installed license:

```
pbnoscli# show license 
=================================================
License Key:  ffa08********************f6ec544
License Type: BASIC
=================================================
pbnoscli# 
```

Use the 'License' command to change the license(if required):

```
pbnoscli# configure terminal 
pbnoscli(config)# license 
 <licensekey>             
pbnoscli(config)# license db9b0********************b66f12
Current user: root
pbnoscli# 

//Verify the License Key
pbnoscli# show license 
=================================================
License Key:  db9b0********************b66f12
License Type: ADV-T
=================================================
pbnoscli# 
```

{% hint style="info" %}
The license can be upgraded without requiring a reinstallation or reset.
{% endhint %}
