NAT gateway metrics and dimensions
The following metrics are available for your NAT gateways. The description column includes a description of each metrics as well as the units and statistics.
Metric | Description |
---|---|
ActiveConnectionCount |
The total number of concurrent active TCP connections through the NAT gateway. A value of zero indicates that there are no active connections through the NAT gateway. Units: Count Statistics: The most useful statistic is |
BytesInFromDestination |
The number of bytes received by the NAT gateway from the destination. If the value for Units: Bytes Statistics: The most useful statistic is |
BytesInFromSource |
The number of bytes received by the NAT gateway from clients in your VPC. If the value for Units: Bytes Statistics: The most useful statistic is |
BytesOutToDestination |
The number of bytes sent out through the NAT gateway to the destination. A value greater than zero indicates that there is traffic
going to the internet from clients that are behind the NAT gateway.
If the value for Unit: Bytes Statistics: The most useful statistic is |
BytesOutToSource |
The number of bytes sent through the NAT gateway to the clients in your VPC. A value greater than zero indicates that there is traffic
coming from the internet to clients that are behind the NAT gateway.
If the value for Units: Bytes Statistics: The most useful statistic is |
ConnectionAttemptCount |
The number of connection attempts made through the NAT gateway. If the value for Unit: Count Statistics: The most useful statistic is |
ConnectionEstablishedCount |
The number of connections established through the NAT gateway. If the value for Unit: Count Statistics: The most useful statistic is |
ErrorPortAllocation |
The number of times the NAT gateway could not allocate a source port. A value greater than zero indicates that too many concurrent connections are open through the NAT gateway. Units: Count Statistics: The most useful statistic is |
IdleTimeoutCount |
The number of connections that transitioned from the active state to the idle state. An active connection transitions to idle if it was not closed gracefully and there was no activity for the last 350 seconds. A value greater than zero indicates that there are connections
that have been moved to an idle state. If the value for
Unit: Count Statistics: The most useful statistic is |
PacketsDropCount |
The number of packets dropped by the NAT gateway.
To calculate the number of dropped packets as a percentage of the overall packet traffic, use this formula: Units: Count Statistics: The most useful statistic is |
PacketsInFromDestination |
The number of packets received by the NAT gateway from the destination. If the value for Unit: Count Statistics: The most useful statistic is |
PacketsInFromSource |
The number of packets received by the NAT gateway from clients in your VPC. If the value for Unit: Count Statistics: The most useful statistic is |
PacketsOutToDestination |
The number of packets sent out through the NAT gateway to the destination. A value greater than zero indicates that there is traffic
going to the internet from clients that are behind the NAT gateway.
If the value for Unit: Count Statistics: The most useful statistic is |
PacketsOutToSource |
The number of packets sent through the NAT gateway to the clients in your VPC. A value greater than zero indicates that there is traffic
coming from the internet to clients that are behind the NAT gateway.
If the value for Unit: Count Statistics: The most useful statistic is |
PeakBytesPerSecond |
This metric reports the highest 10-second bytes per second average in a given minute. Units: Count Statistics: The most useful statistic is |
PeakPacketsPerSecond |
This metric calculates the average packet rate (packets processed per second) every 10 seconds for 60 seconds and then reports the maximum of the six rates (the highest average packet rate). Units: Count Statistics: The most useful statistic is |
To filter the metric data, use the following dimension.
Dimension | Description |
---|---|
NatGatewayId |
Filter the metric data by the NAT gateway ID. |