Adding a UDP Listener (with a QUIC Backend Server Group Associated)

Scenarios

If you use UDP as the frontend protocol, you can select QUIC as the backend protocol, and select the connection ID algorithm to route requests with the same connection ID to the same backend server. QUIC is a great fit for the mobile Internet because it offers low latency, high reliability, and no head-of-line blocking (HOL blocking). Additionally, no new connections need to be established when you switch between a Wi-Fi network and a mobile network.

• QUIC versions include Q043, Q046, and Q050.
• UDP listeners using QUIC as backend protocol do not support fragmentation.

Constraints

• Only dedicated load balancers support the QUIC protocol.
• You can add only UDP listeners if you want to use QUIC as the backend protocol.

Procedure

1. Log in to the management console.
2. In the upper left corner of the page, click and select the desired region and project.
3. Click in the upper left corner to display Service List and choose Networking > Elastic Load Balance.
4. On the Load Balancers page, locate the load balancer and click its name.

   Ensure that Network load balancing (TCP/UDP) has been selected for the load balancer.

5. Under Listeners, click Add Listener.
6. In the Configure Listener step, set Frontend Protocol to UDP, configure other parameters as required, and click Next: Configure Request Routing Policy.
7. In the Configure Routing Policy step, set Backend Protocol to QUIC and configure other parameters as required.
8. Configure the parameters and click Submit.

Related Operations

After you add a listener, associate backend servers with the listener by performing the operations in Backend Server Overview.