---
title: EI0020 Communication_Error_Bind_IP_Port
description: "Failed to enable listening for the host network adapter socket. Reason: %s"
url: https://www.hiascend.com/document/detail/zh/canncommercial/latest/maintenref/troubleshooting/atlaserrorcode_15_0384.html
sourcePath: /source/zh/canncommercial/900/maintenref/troubleshooting/atlaserrorcode_15_0384.html
indexId: 89c528bb92e4d12ff48b76956a86f77c264ea05e7995ad0183755444c7c4ce4e84
---
# EI0020 Communication_Error_Bind_IP_Port

#### Symptom

Failed to enable listening for the host network adapter socket. Reason: %s


#### Solution

Check whether the single-card multi-process scenario is used. If yes, configure the port number using the environment variable HCCL_NPU_SOCKET_PORT_RANGE.