describe_instance_types not reporting base/peak network bandwidth

[tillsteinert]

Describe the bug

When running:
aws ec2 describe-instance-types --instance-types c8gn.medium
Some of the documented fields pertaining to network information seem to be missing. When I tested this a while ago (~1.5month) the API returned those fields as expected - so this seems to be a regression.
The issue also affects other instance types that I tested and expect to use network bandwidth burst.

Regression Issue

• Select this option if this issue appears to be a regression.

Expected Behavior

As per the API documentation, the 'NetworkCards' section of the result JSON should contain additional information on the network bandwidth capacities (e.g., BaselineBandwidthInGbps and PeakBandwidthInGbps) like the numbers reported in the instance specifications.

Current Behavior

Base/peak network bandwidth per network card is missing from the result:

"NetworkCards": [
                    {
                        "NetworkCardIndex": 0,
                        "NetworkPerformance": "Up to 25 Gigabit",
                        "MaximumNetworkInterfaces": 2
                        // Fields should show up here
                    }
]

Reproduction Steps

aws ec2 describe-instance-types --instance-types c8gn.medium

Possible Solution

No response

Additional Information/Context

No response

CLI version used

aws-cli/2.11.19 Python/3.11.3 Linux/6.8.0-79-generic exe/x86_64.ubuntu.24 prompt/off

Environment details (OS name and version, etc.)

Ubuntu 24.04.3 LTS

[tillsteinert]

My tested CLI version seems to slightly predate the addition of the fields. I'll close the issue.

[github-actions]

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