---
title: 由于网卡配置不当引起的超时报错：connect... failed：Connection timed out
description: "多节点运行MPI作业，作业无法正常运行，返回如下报错信息："
url: https://www.hikunpeng.com/document/detail/zh/hpchistory/hpckit/develop2400/userg_huaweimpi_0049.html
sourcePath: /source/zh/hpchistory/hpckit/develop2400/userg_huaweimpi_0049.html
indexId: 6564e1869c22fdd7c06f1caa8cddb77419357c973d149a5f364a25ed8a0a7e4766
---
# 由于网卡配置不当引起的超时报错：connect... failed：Connection timed out

#### 现象描述

多节点运行MPI作业，作业无法正常运行，返回如下报错信息：

```
[1703209660.081479] [node167:2042308:0]           sock.c:272 UCX ERROR connect(fd=37, dest_addr=66.66.66.168:49703) failed: Connection timed out 
[node167:2042308] pml_ucx.c:426  Error: ucp_ep_create(proc=0) failed: Destination is unreachable
```


#### 可能原因

- 防火墙没有关闭，导致建链失败。
- 如果使用RoCE网络，可能是RoCE网络没有配置，网口没有指定IP地址，通过show_gids命令检查发现RoCE网口没有配置IP地址。
  1 2 3 4 5 6 7 DEV PORT INDEX GID IPv4 VeR DEV --- ---- ----- --- ------------ --- --- mlx5_0 1 0 fe80:0000:0000:0000:0ac0:ebff:fe8c:23b8 v1 enplsOfOnp0 mlx5_0 1 1 fe80:0000:0000:0000:0ac0:ebff:fe8c:23b8 v2 enp1s0fOnp0 mlx5_1 1 0 fe80:0000:0000:0000:0ac0:ebff:fe8c:23b9 v1 enp1s0f1npl mlx5_1 1 1 fe80:0000:0000:0000:0ac0:ebff:fe8c:23b9 v2 enp1s0f1npl n gids found=4


#### 恢复步骤

- 关闭防火墙。
- 配置RoCE网络。
  1 2 3 4 5 6 7 DEV PORT INDEX GID IPv4 VeR DEV --- ---- ----- --- ------------ --- --- mlx5_0 1 0 fe80:0000:0000:0000:0ac0:ebff:fe8c:23b8 v1 enplsOfOnp0 mlx5_0 1 1 fe80:0000:0000:0000:0ac0:ebff:fe8c:23b8 v2 enp1s0fOnp0 mlx5_1 1 0 fe80:0000:0000:0000:0ac0:ebff:fe8c:23b9 xx.xx.xx.xxx v1 enp1s0f1npl mlx5_1 1 1 fe80:0000:0000:0000:0ac0:ebff:fe8c:23b9 xx.xx.xx.xxx v2 enp1s0f1npl n gids found=4