After creating a classic CLB instance, you need to configure a listener for it. The listener listens to requests on the instance and distributes traffic to real servers based on the load balancing policy.

Prerequisites

You need to create a CLB instance first and select "Classic CLB" for Instance type.

Note：

All Tencent Cloud accounts registered after June 17, 2020 00:00:00 are bill-by-IP accounts, which no longer support classic CLB. You can only purchase a CLB instance.

Configuring the Listener

Step 1. Open the Listener Management page

1. Log in to the CLB Console.
2. Select CLB Instance List on the left sidebar.
3. On the Instance Management page, click the ID/Name of the instance to be configured to enter the instance details page.
4. Select the Listener Management tab, or click Configure listener under the Operation column on the Instance Management page.
   
5. The Listener Management page is as shown below.
   

Step 2. Configure a listener

Click Create under Listener Management and configure a TCP listener in the pop-up window.

1. Basic configuration

To create a TCP listener, complete the basic configuration as shown below:

2. Advanced configuration

Complete the configuration as shown below:

3. Health check

Complete the health check configuration as shown below:

Step 3. Bind a real server

Click Bind on the Listener Management page and select the real server to be bound in the pop-up window, as shown below:

The configuration is as shown below:

Note：

If you configure multiple listeners to a classic CLB instance and bind multiple real servers, each listener will forward requests to all real servers based on its configuration.

Step 4. Security group (optional)

You can configure a CLB security group to isolate public network traffic. For more information, see Configuring a CLB Security Group.

Step 5. Modify or delete a listener (optional)

If you need to modify or delete an existing listener, select the listener on the Listener Management page and click Modify or Delete.