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Symptom An ECS cannot ping the gateway of the subnet where the ECS resides. Troubleshooting Locate the fault based on the following procedure.
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.
When a subnet is used, the gateway IP address must be configured for the subnet. A router cannot be added to networks whose provider:network_type is geneve. Only one router can be added to a subnet.
Obtain the IKE policy used by your gateway device. Obtain the IPsec policy used by your gateway device. Obtain the ACL rule used by your gateway device. Check whether your gateway device can communicate with the gateway devices on the cloud.
Border Gateway Protocol (BGP) is a routing protocol used between autonomous systems (ASs). BGP is the only protocol that can process many connections between unrelated routing domains.
EIPs can be bound to or unbound from ECSs, BMSs, NAT gateways, and virtual IP addresses. Each EIP can be used by only one cloud resource at a time.
Notes and Constraints If you want to delete a subnet that has custom routes, virtual IP addresses, or other resources (ECSs, load balancers, or NAT gateways), you need to delete these resources as prompted on the console first. Procedure Log in to the management console.
gateway: 10.0.1.1 Obtaining ECS Network Interface Addresses Obtaining Subnet CIDR Blocks and Gateway Addresses Destination IPv4 address: 10.0.2.12 N/A Table 2 lists the information to be collected for a Linux ECS using IPv6.
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.
In the Gateway and DNS Information area, view the gateway address of the subnet. Figure 2 Viewing the gateway address of the subnet Step 3: Configure Policy-based Routes for the Extended Network Interface ECS Remotely log in to the ECS.
Failed to complete the request because the server has received an invalid response. 503 Service Unavailable Failed to complete the request because the service is unavailable. 504 Gateway Timeout A gateway timeout error occurred.
Figure 5 Gateway address Check whether the gateway communication is normal: ping Subnet gateway address Example command: ping 172.17.0.1 If the gateway address cannot be pinged, see Why Does My ECS Fail to Communicate at a Layer 2 or Layer 3 Network?
P-T P-T Remote Gateway A remote gateway is the public IP address of the physical device on the peer end in an IPsec VPN tunnel. The remote gateway of each IPsec VPN tunnel must be unique. Remote Subnet A remote subnet is the destination IP addresses reachable through the tunnel.
P-T P-T Remote Gateway A remote gateway is the public IP address of the physical device on the peer end in an IPsec VPN tunnel. The remote gateway of each IPsec VPN tunnel must be unique. Remote Subnet A remote subnet is the destination IP addresses reachable through the tunnel.
The next hop types of such routes are: VPN gateway Direct Connect gateway Cloud connection To delete these routes, you need to delete the associated network instances first. Routes with the next hop type of cloud container cannot be modified or deleted.
Subnet gateway: In the Gateway and DNS Information area, check the gateway address.
of Active/Standby Direct Connect Connections (Global DC Gateway) Setting Up a Hybrid Cloud Network Using Enterprise Router, VPN, and Direct Connect (Global DC Gateway) In Figure 4, some workloads are running in two VPCs (VPC-A and VPC-B) in a region, and some workloads are running
RDS DB instance: RDS Documentation CCE instance: CCE Documentation API gateway: API Gateway Documentation Figure 1 Scenario 1: Virtual IP address cannot be released Figure 2 Scenario 2: Virtual IP address cannot be released Procedure Log in to the management console.
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.
NOTE: When you add or modify a custom route in a default route table, the next hop type of the route cannot be set to VPN gateway, Direct Connect gateway, or Cloud connection. VPC peering connection Next Hop Mandatory Set the next hop.
