NAT Gateway Specifications
The NAT gateway performance is determined by the maximum number of SNAT connections supported.
Public NAT Gateway
An SNAT connection consists of a source IP address, source port, destination IP address, destination port, and a transport layer protocol. The source IP address is the EIP, and the source port is the EIP port. An SNAT connection uniquely identifies a session.
Throughput is the total bandwidth of all EIPs in DNAT rules. For example, a public NAT gateway has two DNAT rules. The EIP bandwidth in the first DNAT rule is 10 Mbit/s, and that in the second DNAT rule is 5 Mbit/s. The throughput of the public NAT gateway will be 15 Mbit/s.
Private NAT Gateway
An SNAT connection consists of a source IP address, source port, destination IP address, destination port, and a transport layer protocol. The source IP address is the transit IP address, and the source port is the port of the transit IP address.
Select a private NAT gateway based on your service requirements. Table 2 lists the private NAT gateway specifications.
|
Specifications |
Maximum Number of SNAT Connections |
Bandwidth |
|---|---|---|
|
Small |
2,000 |
200 Mbit/s |
|
Medium |
5,000 |
500 Mbit/s |
|
Large |
20,000 |
2 Gbit/s |
|
Extra-large |
50,000 |
5 Gbit/s |
If the number of requests exceeds the maximum allowed connections of a private NAT gateway, services will be adversely affected. To avoid this situation, create alarm rules on the Cloud Eye console to monitor the number of SNAT connections.
Feedback
Was this page helpful?
Provide feedbackThank you very much for your feedback. We will continue working to improve the documentation.See the reply and handling status in My Cloud VOC.
For any further questions, feel free to contact us through the chatbot.
Chatbot
