This topic describes how to upgrade and downgrade the sizes of NAT gateways.
Background information
NAT gateways are available in multiple sizes, including small, middle, large, and
super large-1 sizes. The sizes of NAT gateways determine 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.
| Size | Maximum number of SNAT connections | Number of new SNAT connections per second |
|---|---|---|
| Small | 10,000 | 1,000 |
| Medium | 50,000 | 5,000 |
| Large | 200,000 | 10,000 |
| Super large-1 | 1,000,000 | 50,000 |
Procedure
- On the NAT Gateways page, find the NAT gateway that you want to manage, and choose
> Upgrade/Downgrade in the Actions column.