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When type is nat, the value a NAT gateway ID. When type is peering, the value is a VPC peering connection ID. When type is vpn, the value is a VPN ID. When type is dc, the value is a Direct Connect connection ID. When type is cc, the value is a Cloud Connect connection ID.
So, the four ECSs (ECS-A01, ECS-A02, ECS-B01, and ECS-B02) can communicate with each other, but they cannot receive traffic from the NAT gateway.
Constraints Subnet: No IP address in the subnet is being used by other resources, such as virtual IP addresses, elastic network interfaces, supplementary network interfaces, ECSs, SNAT rules of NAT gateways, VPC endpoints, VPC endpoint services, and load balancers.
If the local host communicates with the ECS using NAT, this problem may occur. Run the following command to check whether tcp_tw_recycle is enabled on the ECS: sysctl -a|grep tcp_tw_recycle If the value of tcp_tw_recycle is 1, the function is enabled.
Can Be Replicated to the Default Route Table Can Be Replicated to a Custom Route Table Local No No Server Yes Yes Extension NIC Yes Yes BMS user-defined network No Yes VPN gateway No Yes Direct Connect gateway No Yes Cloud connection No Yes Supplementary network interface Yes Yes NAT
Creates a NAT gateway with an EIP bound and configures SNAT rules to enable Subnet-01 to connect to the Internet. Account B Principal Creates ECSs and RDS instances in Subnet-01 to deploy applications that can be accessed over the Internet.
NAT gateway Creates and manages NAT gateways in the shared subnet. Cannot create NAT gateways in the shared subnet. VPN gateway Creates and manages VPN gateways in the shared subnet. Cannot create VPN gateways in the shared subnet.
You can bind EIPs to products such as ECSs, NAT gateways, and load balancers so that these products can use the shared bandwidth. Shared Data Package A shared data package is a prepaid package for public network traffic.
subeni: IP address of a supplementary network interface neutron:LOADBALANCERV2: IP address of a shared load balancer neutron:LOADBALANCERV3: IP address of a dedicated load balancer network:endpoint_interface: IP address of a VPC endpoint network:nat_gateway: IP address used by a NAT
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 pay-per-use EIPs. The shared bandwidth is dynamically allocated to the EIPs based on the actual usage conditions.
You can use EIPs, NAT gateways, Direct Connect connections, VPN connections, and load balancers to enable access to or from the Internet. By default, instances in different VPCs cannot communicate with each other.
To enable this, you can use the NAT Gateway service or configure an SNAT server. For details, see Enabling Internet Connectivity for an ECS Without an EIP. Parent Topic: VPC Peering Connection
subeni: IP address of a supplementary network interface neutron:LOADBALANCERV2: IP address of a shared load balancer neutron:LOADBALANCERV3: IP address of a dedicated load balancer network:endpoint_interface: IP address of a VPC endpoint network:nat_gateway: IP address used by a NAT
subeni: IP address of a supplementary network interface neutron:LOADBALANCERV2: IP address of a shared load balancer neutron:LOADBALANCERV3: IP address of a dedicated load balancer network:endpoint_interface: IP address of a VPC endpoint network:nat_gateway: IP address used by a NAT
You can use EIP, NAT Gateway, or ELB to allow the resources in VPCs to access or be accessed by the public network.
If you want multiple resources to share an EIP, refer to Using NAT Gateway and VPC Peering to Enable Communication Between VPCs and Internet. Figure 6 Networking diagram Parent Topic: VPC Peering Connection Usage
aa-bb-cc indicates that the private IP address is used by a cloud server in the AZ aa-bb-cc. neutron:VIP_PORT: Virtual IP address neutron:LOADBALANCERV2: Shared load balancer neutron:LOADBALANCERV3: Dedicated load balancer network:endpoint_interface: VPC endpoint network:nat_gateway: NAT
aa-bb-cc indicates that the private IP address is used by a cloud server in the AZ aa-bb-cc. neutron:VIP_PORT: Virtual IP address neutron:LOADBALANCERV2: Shared load balancer neutron:LOADBALANCERV3: Dedicated load balancer network:endpoint_interface: VPC endpoint network:nat_gateway: NAT
aa-bb-cc indicates that the private IP address is used by a cloud server in the AZ aa-bb-cc. neutron:VIP_PORT: Virtual IP address neutron:LOADBALANCERV2: Shared load balancer neutron:LOADBALANCERV3: Dedicated load balancer network:endpoint_interface: VPC endpoint network:nat_gateway: NAT
aa-bb-cc indicates that the private IP address is used by a cloud server in the AZ aa-bb-cc. neutron:VIP_PORT: Virtual IP address neutron:LOADBALANCERV2: Shared load balancer neutron:LOADBALANCERV3: Dedicated load balancer network:endpoint_interface: VPC endpoint network:nat_gateway: NAT
