EC2 baseline Bandwidth

Hello hhphong,

Based on the AWS documentation, the network bandwidth for instances like m5n.xlarge depends on several factors, including the number of vCPUs and the usage of network I/O credits. Instances with 16 vCPUs or fewer, such as yours, have a baseline bandwidth and can temporarily burst above this baseline using credits. However, once the credits are depleted, the instance will revert to its baseline bandwidth. Bandwidth availability can also vary depending on traffic destination (e.g., within a region or through an internet gateway).

If your m5n.xlarge instance is not meeting the expected baseline bandwidth, consider the following:

1. Baseline vs. Burst: The m5n.xlarge has a baseline bandwidth, and it can burst above this baseline when network I/O credits are available. If the burst is not being sustained, your instance may have exhausted its network I/O credits and reverted to baseline performance.

2. Traffic Destination: The full bandwidth may only be utilized for certain types of traffic. For example, traffic within the same AWS region can utilize the full available bandwidth, while traffic routed through an internet gateway may only use a portion of it.

3. Network Constraints: Ensure that your instance isn’t exceeding other network allowances such as packets per second or the number of tracked connections, which can also limit effective bandwidth.

For more details, you can refer to the AWS documentation on instance network bandwidth.

I hope this has been helpful, and if you have any further questions, I'm here to help.

Thank you for your explaination.

If I would like to have "The full bandwidth may only be utilized for certain types of traffic" , how can i get it from AWS ?