What Can I Do If the Network Is Unreachable After a Global EIP Is Bound to an Instance?

Symptom

An instance has a global EIP bound to it and network configuration is completed. However, the instance still cannot access the Internet or provide services for the Internet. This may be because there is no route with next hop set to the global internet gateway in the route table.

After a global EIP is bound to an instance, you can check whether the route table contains a route with next hop set to the global internet gateway.

Troubleshooting

1. Go to the global internet gateway list page.
2. In the global internet gateway list, click the name of the subnet where the target global internet gateway is located.

   The subnet details page is displayed.

3. On the subnet details page, click the route table name on the right.

   The route table details page is displayed.

4. On the route table details page, check whether there is a route with next hop of the global internet gateway. If there is no such a route, add one with the next hop set to the global internet gateway.
   • If there is no default route, add a default route with next hop set to the global internet gateway to the route table. For details, see Adding a Default Route.
   • If there is a default route, add a route with next hop set to the global internet gateway and destination to the one you required. For details, see Adding a Route.

Adding a Default Route

1. Click Add Route and configure parameters as prompted.

   Table 1 Parameter description

   Parameter	Description
   Destination Type	Mandatory Select IP address.
   Destination	The destination CIDR block. Set it to 0.0.0.0/0.
   Next Hop Type	Select Global internet gateway.
   Next Hop	Select the created global internet gateway.
   Description	(Optional) Supplementary information about the route. The description can contain a maximum of 255 characters and cannot contain angle brackets (< or >).

2. Click OK.

Adding a Route

1. Click Add Route and configure parameters as prompted.

   Table 2 Parameter description

   Parameter	Description
   Destination Type	Mandatory Select IP address.
   Destination	The destination CIDR block. Add the required destination address based on your actual requirements.
   Next Hop Type	Select Global internet gateway.
   Next Hop	Select the created global internet gateway.
   Description	(Optional) Supplementary information about the route. The description can contain a maximum of 255 characters and cannot contain angle brackets (< or >).

2. Click OK.

Submitting a Service Ticket

If the problem persists, submit a service ticket.