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How Do I Configure Policy-Based Routes for an ECS with Multiple Network Interfaces? Background If a cloud server has multiple network interfaces, the primary network interface can communicate with external networks by default, but the extended network interfaces cannot. To enable
Why Are There Intermittent Interruptions When a Local Host Accesses a Website Built on an ECS? Symptom After you build a website on an ECS, some users occasionally are unable to access the website through the local network. Troubleshooting Check the local network of the user. If the
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
Why Is My ECS Unable to Communicate at a Layer 2 or Layer 3 Network? Symptom An ECS cannot ping the gateway of the subnet where the ECS resides. Troubleshooting Locate the fault based on the following procedure. Figure 1 Troubleshooting procedure Checking Whether the ECS Has Obtained
Manually Configuring IPv4 and IPv6 Policy-based Routes for a Windows ECS with Multiple Network Interfaces Scenarios This section describes how to configure policy-based routes for a Windows Server 2012 64-bit ECS with two network interfaces. IPv4: If IPv4 communication between multiple
Why Does My ECS Fail to Communicate with Other After It Has Firewall Installed? Symptom An ECS has a single network interface and failed to communicate with others after the ECS has a firewall installed. An example scenario is as follows: In a VPC, there are three ECSs. Services are
Manually Configuring IPv4 and IPv6 Policy-based Routes for a Linux ECS with Multiple Network Interfaces (Ubuntu) Scenarios This section describes how to configure policy-based routes for an Ubuntu 22.04 server 64-bit ECS with two network interfaces. IPv4: If IPv4 communication between
Manually Configuring IPv4 and IPv6 Policy-based Routes for a Linux ECS with Multiple Network Interfaces (CentOS) Scenarios This section describes how to configure policy-based routes for a CentOS 8.0 64-bit ECS with two network interfaces. IPv4: If IPv4 communication between multiple
Why Cannot I Access Public Websites Through Domain Names or Access Internal Domain Names on the Cloud When My ECS Has Multiple Network Interfaces? When an ECS has more than one network interface, if different DNS server addresses are configured for the subnets used by the network