Network

Last Updated At: 2025-10-21 09:10:00

How to Troubleshoot the Problem of No Network after Logging in to the CVM?

It may be caused by incorrect configuration of your server security group. Check the inbound and outbound rules of the server security group. Check whether your destination, protocol port, and policy are prohibited.

Can a Private Network Instance Communicate with a Basic Network Instance?

Support, but with the following restrictions:
The IP range (CIDR) of the VPC must be 10.0.0.0/16 ~ 10.0.47.0/16 (including subsets), otherwise conflicts will occur.

Setup Steps

Log in to the VPC console, click on the VPC's ID/name to enter the VPC details page, and configure the Basic Network Interconnection section by associating the required basic network hosts for interconnection.

How to View the Basic Network CVMs that are Interconnected with VPC?

Log in to the VPC console, click on the VPC's ID/name to enter the VPC details page, and in the Basic Network Interconnection section, you can view the interconnected basic network CVMs with the VPC's CVMs.

Can the CVM be Replaced to an Overseas Network?

The network of the CVM cannot be changed after purchase. If you need an overseas network, it is recommended to return the CVM and purchase a new overseas server.

How to Configure the Private Network DNS?

See Private Network DNS.

The Local VPN in the Same IP Range can Obtain the IP of the IP Range but Cannot Access the Internet. How Can This Be Resolved?

Check whether the following configuration is correct:

  1. Is the manually added IP in the same IP subnet as the automatically obtained IP? Are the subnet masks consistent? Is the default gateway configured? Is the default gateway address correct?
  2. Is DNS configured? Is the DNS address correct?
  3. If the above information is correct, confirm whether there is any IP address conflict in the statically configured IP address.
  4. If the above methods cannot solve the problem, please submit a ticket to contact us.