This topic describes how to upgrade or downgrade a NAT gateway. You can change the size of a NAT gateway without affecting the workloads.
Background information
NAT gateways are available in multiple sizes, including small, middle, large, and
super large-1. The size of a NAT gateway determines the maximum number of Source Network Address
Translation (SNAT) connections and the number of new SNAT connections per second (CPS).
However, Destination Network Address Translation (DNAT) is not affected by the sizes
of NAT gateways. The following table lists the available sizes of NAT gateways.
| Type | Maximum number of SNAT connections | Number of new SNAT connections per second |
|---|---|---|
| Small | 10,000 | 1,000 |
| Middle | 50,000 | 5,000 |
| Large | 200,000 | 10,000 |
| Super Large-1 | 1,000,000 | 50,000 |
Procedure
- On the NAT Gateway page, find the NAT gateway that you want to manage, and choose
> Upgrade/Downgrade in the Actions column.
