Concepts | If you assign an EIP and do not add it to a shared bandwidth, the EIP uses a dedicated bandwidth by default no matter how the EIP is billed. A dedicated bandwidth can only be used by one EIP. Each EIP can only be bound to one cloud resource, such as an ECS, a NAT gateway, or a load balancer. | A shared bandwidth can be used by multiple EIPs. - The shared bandwidth is dynamically allocated to the EIPs based on the actual usage conditions.
- Adding an EIP to or removing an EIP from a shared bandwidth does not affect your services.
|
Features | - Stable performance: The bandwidth is dedicated, so your use of the bandwidth is not affected by other resources. This type of bandwidth is ideal for applications requiring high-performance networks.
- Quality of service (QoS): Guaranteed stable bandwidths and low latency are suitable for real-time applications.
| - Cost-effectiveness: Multiple EIPs sharing the same bandwidth can effectively reduce the overall costs. This type of bandwidth is suitable for users with limited budgets.
- Flexibility: You can dynamically adjust the size of a shared bandwidth based on your requirements.
- Performance fluctuation: When the bandwidth is used by multiple EIPs at the same time, the bandwidth allocated to each EIP is limited.
|
Applicable scenarios | - Bandwidth preemption needs to be avoided to ensure Internet access for all EIPs at the same time.
- High-performance and stable bandwidth is required, such as video streaming, online gaming, and financial transactions.
| - Internet access needs to be scheduled at different times to optimize bandwidth usage.
- There are no demanding requirements on bandwidth or multiple EIPs need to be used at the same time, such as web servers and test environments.
|
Changes between dedicated and shared bandwidths | A dedicated bandwidth cannot be changed to a shared bandwidth and vice versa. However, you can purchase a shared bandwidth for EIPs.- Add an EIP to a shared bandwidth and then the EIP will use the shared bandwidth.
- Remove the EIP from the shared bandwidth and then the EIP will use the dedicated bandwidth.
|