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Binding an EIP to an ECS Scenarios This section describes how to bind an EIP to an ECS by calling APIs. Prerequisites You have created an ECS. For details, see Purchasing an ECS. If you use a token for authentication, you must obtain the token and add X-Auth-Token to the request header
Binding a Premium BGP EIP to an ECS to Enable Internet Access Scenarios Premium BGP provides fast and high-quality public network lines between Chinese mainland and the rest of the world. BGP is used to interconnect with lines of multiple mainstream carriers. Public network connections
Can I Bind an EIP of an ECS to Another ECS? Yes. You can unbind the EIP from the original ECS. For details, see Unbinding an EIP from an Instance. Then, bind the EIP to the target ECS. For details, see Binding an EIP to an Instance. If you want to change an EIP for your ECS, refer
Unbinding an EIP from an ECS Scenarios This section describes how to unbind an EIP from an ECS by calling APIs. Prerequisites You have created an ECS. For details, see Purchasing an ECS. If you use a token for authentication, you must obtain the token and add X-Auth-Token to the request
What Are the Priorities of the Custom Route and EIP If Both Are Configured for an ECS to Enable the ECS to Access the Internet? The priority of an EIP is higher than that of a custom route in a VPC route table. For example: The VPC route table of an ECS has a custom route with 0.0.0.0
Why Does the Download Speed of My ECS Is Slow? If the download speed of an ECS is slow, check the following: Bandwidth limit exceeded: Your used bandwidth exceeds its limit and the limiting policy of the bandwidth takes effect, causing packet loss and slowing down the access. You
Why Am I Still Being Billed After My EIP Has Been Unbound or Released? Symptom After my EIP is unbound from an instance or is released, the EIP is still being billed. Yearly/monthly EIPs are prepaid and you have already paid for the EIPs during the validity period. Unbinding an EIP
Binding an EIP to the Extended Network Interface of an ECS to Enable Internet Access Scenarios As shown in Figure 1, the ECS has two network interfaces, one primary network interface and one extended network interface. You can bind an EIP to the extended network interface of the ECS
How Do I Know If My EIP Bandwidth Has Been Exceeded? Symptom The bandwidth size configured when you buy a dedicated or shared bandwidth defines the maximum amount of outbound bandwidth supported. If an ECS running your web applications cannot be accessed smoothly from the Internet
Can Multiple EIPs Be Bound to an ECS? Scenarios Multiple EIPs can be bound to an ECS, but this operation is not recommended. If an ECS has multiple network interfaces attached and you want to bind multiple EIPs to this ECS, you need to configure policy-based routes for these network
Why Can't My ECS Access the Internet Even After an EIP Is Bound? Symptom An ECS with an EIP bound cannot access the Internet. Troubleshooting Checking Whether EIPs Are Blocked or Frozen Check whether the EIP is blocked. For details, see How Do I Unblock an EIP? Check whether the EIP
How Do I Access an ECS with an EIP Bound from the Internet? Each ECS is automatically added to a security group after being created to ensure its security. The security group denies access traffic from the Internet by default (except TCP traffic from port 22 through SSH to a Linux