---
title: EI0009 Communication_Error_Initialize_Transport
description: "Device %s transport init error. Reason: %s."
url: https://www.hiascend.com/document/detail/zh/canncommercial/latest/maintenref/troubleshooting/atlaserrorcode_15_0381.html
sourcePath: /source/zh/canncommercial/900/maintenref/troubleshooting/atlaserrorcode_15_0381.html
indexId: b8a91876f829fcb40e0d93cdd31bced2bb8ab533aafcf46eed22d5da78c58ff284
---
# EI0009 Communication_Error_Initialize_Transport

#### Symptom

Device %s transport init error. Reason: %s.


#### Solution

Use the following hccn_tool commands to check whether the port link is down. (The scope of i represents the number of NPUs of each node. 8 is used as an example.) 1. for i in {0..7}; do hccn_tool -i $i -optical -g; done | grep present: Check whether the optical module is in position. 2. for i in {0..7}; do hccn_tool -i $i -ip -g; done. Check whether the IP address is configured. 3. for i in {0..7}; do hccn_tool -i $i -lldp -g: Check whether the switch is connected.