# How to enable BBR in VOXL2?

Source: https://forum.modalai.com/topic/2753/how-to-enable-bbr-in-voxl2
Category: General Questions (https://forum.modalai.com/category/2/general-questions)
Posted: 2023-10-17 16:49:54 UTC by kay.han
Replies: 2 · Views: 542

## kay.han · 2023-10-17 16:49:54 UTC

Hello, 

I would like to improve the network performance in VOXL2 and I found out about the BBR.
- https://blog.apnic.net/2020/01/10/when-to-use-and-not-use-bbr/
- https://www.linuxbabe.com/ubuntu/enable-google-tcp-bbr-ubuntu

I thought I could use the BBR because VOXL2's OS was ubuntu 18.04 and its kernel version was above 4.9. However, I encountered the error message below.

Is there a way to apply the BBR to VOXL2?

![fdd9ee46-b803-465e-bc25-d97f037bb53a-image.png](https://forum.modalai.com/assets/uploads/files/1697561004121-fdd9ee46-b803-465e-bc25-d97f037bb53a-image.png)

## Reply by Moderator (ModalAI staff) · 2023-10-18 18:38:43 UTC

@kay-han Hi Kay, you could look at how to build the kernel here: https://docs.modalai.com/voxl2-kernel-build-guide/ If it is not currently included, you might need to add it

## Reply by kay.han · 2023-10-19 15:07:00 UTC (in reply to Moderator)

@Moderator Oh, thank you so much for sharing it. I'll check it!