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FAQs about elastic public IP

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More Posted time:Dec 7, 2016 10:26 AM
1) What is elastic public IP (EIP)?
    An EIP is a public IP address available for independent application. An EIP can only be bound to a VPC-type ECS instance in the same region, with dynamic binding and unbinding supported.

2) What is the difference between EIP and the public IP address of ECS?
    The public IP address information is available from the ECS network card. Currently, the public IP addresses can only apply to ECS instances in the classic network type. The EIP is a NatIP mapped to the private network card of ECS.

3) Why isn't the EIP information displayed from the network card?
    The EIP is configured on an internet gateway device and mapped to the private network card of ECS through NAT. Therefore, the EIP information is not available from the private network card.

4) How many EIPs can be configured at the same time?
    Each account can own a maximum of 20 EIPs. If you need to configure more EIPs, submit your application through tickets.

5) Which cloud products can the EIP be bound to currently?
    At present, EIPs can only be bound to VPC-type ECS instances.

6) Can EIPs be bound to ECS instances of the classic network type?
    No. It is not supported.

7) Can EIPs be bound to cloud product instances in different regions?
    EIPs can only be bound to cloud product instances of the VPC type in the same region.

8) How many cloud product instances can one EIP be bound to?
    Currently, one EIP can only be bound to one ECS instance.

9) How many public IP addresses can be bound to one ECS instance?
    Currently, only one public IP address can be bound to one ECS instance.
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