NAT gateway
Port allocation errors
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The alarm changes state if there is a port allocation error in the NAT gateway.
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The alarm returns to the
OKstate if the data is within the acceptable threshold for 5 minutes. -
This can mean that too many concurrent connections are open through the NAT gateway and it caused a port allocation error.
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Metric:
ErrorPortAllocation> 0
Packets dropped count
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The alarm changes state if a value greater than 0.01% is reached within a 1-minute period.
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This might indicate an ongoing transient issue with the NAT gateway.
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The alarm returns to the
OKstate if the data is within the acceptable threshold for 5 minutes. -
If this value exceeds 0.01 percent of the total traffic on the NAT gateway, check the AWS Service Health dashboard.
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Metric:
PacketsDropCount> 0.01%
