How to check whether BBR acceleration is successfully enabled on the VPS?

Previously, this site has introduced to you "Enabling BBR Congestion Control Algorithm for VPS with One Click to Accelerate Your VPS Network Speed", and also shared a script to enable BBR acceleration with one click. So how do you check whether your VPS has successfully enabled BBR acceleration? Woolen cloth? Today I will share with you how to check the BBR opening status.

1. BBR related tutorials

Regarding BBR, this site has shared many related tutorials. You can refer to:

• "Enable BBR congestion control algorithm for VPS with one click to accelerate your VPS network speed"
• "VPS Acceleration Script Sharing: One-click installation and activation of BBR, BBR Modified Version, BBRplus, and Rapid Acceleration"

I also shared reviews of different acceleration scripts and how to uninstall BBR:

• "Comparison of VPS acceleration effects: Which one is better, BBR, modified version of BBR, BBRPlus, or Ruisu?" 》
• "Linux VPS Offloading BBR Accelerated Congestion Control Algorithm Tutorial"

2. Check whether BBR is opened successfully

The following introduces two methods to check the BBR opening status.

1. Code inspection method

Execute the following code:

sysctl net.ipv4.tcp_available_congestion_control

If there is BBR in the returned result, it means that BBR is successfully opened, as follows (the order can be different):

net.ipv4.tcp_available_congestion_control = reno cubic bbr

2. Script checking method

We can also use the one-click script introduced above to check the opening status of BBR. The code is as follows:

wget -N --no-check-certificate "https://raw.githubusercontent.com/chiakge/Linux-NetSpeed/master/tcp.sh" chmod +x tcp.sh ./tcp.sh

As shown below, the management interface of the script will display the acceleration strategy currently used by the VPS. If it is BBR, it will display "BBR started successfully":

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