# Netx Duo Ping

## 概述

这个例程演示了netx的arp和icmp功能。它使能了对ping命令的回应。

## 硬件设置

用网线连接开发板和电脑/路由器/交换机

## 工程配置
- 以太网端口配置：参考 [以太网通用工程设置](../../../../lwip/doc/Ethernet_Common_Project_Settings_zh.md)
- 可以通过将`CONFIG_NETX_ENABLE_DHCP`设置为0或者注释掉定义`CONFIG_NETX_ENABLE_DHCP`宏的语句来禁止DHCP功能。
- 禁用DHCP时，可以注释掉`set(CONFIG_ECLIPSE_THREADX_NETXDUO_ADDONS_DHCP 1)`语句，从而减少工程的源文件数量

## 运行现象

当工程正确运行后,链接状态会被周期性的打印到终端上,直到链接状态为Up,接收到ICMP包的数量也会被周期性的打印到终端上。以下消息会被打印到终端上:
```console
NetXDuo is running
IP address: 192.168.1.223
Mask: 255.255.255.0
received 0 ICMP packets
Enet phy init passed !
received 0 ICMP packets
Link Status: Down
received 0 ICMP packets
received 0 ICMP packets
Link Status: Up
Link Speed:  1000Mbps
Link Duplex: Full duplex
received 0 ICMP packets
received 0 ICMP packets
received 0 ICMP packets
received 0 ICMP packets
received 0 ICMP packets
received 0 ICMP packets
received 1 ICMP packets
received 2 ICMP packets
received 3 ICMP packets
received 4 ICMP packets
```