iMX6ULL 网络功能全检测

2023-10-20 20:26:34

本文以飞凌嵌入式OKMX6ULL-S开发板为基础讲解，其它板卡请参考使用，本文主要讲解了iMX6ULL 网络功能的测试，分为无线网络测试以及有线网络测试，通过本文您可以快速了解飞凌iMX6ULL开发板网络测试的全过程。

一、有线网络测试

1、基本命令测试

每个开发板的网络使用环境未必相同，本节测试示例中，网络环境如下。实际使用中，请按照实际网络环境自行进行配置。

底板丝印	软件设备
NET1	eth1
NET2	eth0

OKMX6ULL-C有eth0、eth1两路网卡。开机已设置默认eth0、eth1自动分配IP。如果修改IP请修改/etc/network/interfaces。

注意：eth1与eth0不能用于同一个局域网。

下面以eth0为例进行命令说明。

1.1、在Linux系统下，使用ifconfig命令可以显示或配置网络设备，使用ethtool查询及设置网卡参数。

1.2、设置IP地址，查看当前网卡详情：

root@fl-imx6ull:~# ifconfig eth0 192.168.1.120
root@fl-imx6ull:~#ifconfig eth0
eth0      Link encap:Ethernet  HWaddr 3A:D9:93:8E:A8:A4
          inet addr:192.168.1.120  Bcast:192.168.1.255  Mask:255.255.255.0
          inet6 addr: fe80::38d9:93ff:fe8e:a8a4%2124311408/64 Scope:Link
          inet6 addr: fec0::38d9:93ff:fe8e:a8a4%2124311408/64 Scope:Site
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:28 errors:0 dropped:0 overruns:0 frame:0
          TX packets:63 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:11550 (11.2 KiB)  TX bytes:11579 (11.3 KiB)

1.3、动态分配IP地址

如果您的开发板与路由器连接，且路由器支持DHCP自动IP地址分配可以在超级终端里面输入命令：

root@fl-imx6ull:~#udhcpc -i eth0
udhcpc (v1.24.1) started
Sending discover...
Sending select for 192.168.20.101...
Lease of 192.168.20.101 obtained, lease time 86400
/etc/udhcpc.d/50default: Adding DNS 222.222.222.222

用来动态获取IP地址，“-i” 参数用来指定网卡名称，飞凌iMX6ULL开发板有线网络的网卡名称为eth0。

/etc/resolv.conf文件中有dns服务器信息会被自动添加。

1.4、修改mac地址：

root@fl-imx6ull:~#ifconfig eth0 hw ether 00:00:00:00:00:01
root@fl-imx6ull:~#ifconfig eth0
eth0      Link encap:Ethernet  HWaddr 00:00:00:00:00:01
          inet addr:192.168.20.101  Bcast:192.168.20.255  Mask:255.255.255.0
          inet6 addr: fec0::38d9:93ff:fe8e:a8a4%2128292720/64 Scope:Site
          inet6 addr: fec0::200:ff:fe00:1%2128292720/64 Scope:Site
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:85 errors:0 dropped:0 overruns:0 frame:0
          TX packets:118 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:22942 (22.4 KiB)  TX bytes:22259 (21.7 KiB)

另外在/forlinx/shell/mac.sh中根据uid设置MAC地址，如果需要请添加到开机自启动脚本中。

1.5、设置子网掩码：

root@fl-imx6ull:~#ifconfig eth0 netmask 255.255.255.0
root@fl-imx6ull:~#ifconfig eth0
eth0      Link encap:Ethernet  HWaddr 00:00:00:00:00:01
          inet addr:192.168.20.101  Bcast:192.168.20.255  Mask:255.255.255.0
          inet6 addr: fec0::38d9:93ff:fe8e:a8a4%2128915312/64 Scope:Site
          inet6 addr: fec0::200:ff:fe00:1%2128915312/64 Scope:Site
         UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:107 errors:0 dropped:0 overruns:0 frame:0
          TX packets:118 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:25700 (25.0 KiB)  TX bytes:22259 (21.7 KiB)

1.6、设置广播地址

root@fl-imx6ull:~#ifconfig eth0 broadcast 192.168.20.120
root@fl-imx6ull:~#ifconfig eth0
eth0      Link encap:Ethernet  HWaddr 00:00:00:00:00:01
          inet addr:192.168.20.101  Bcast:192.168.20.120  Mask:255.255.255.0
          inet6 addr: fec0::38d9:93ff:fe8e:a8a4%2123332464/64 Scope:Site
          inet6 addr: fec0::200:ff:fe00:1%2123332464/64 Scope:Site
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:111 errors:0 dropped:0 overruns:0 frame:0
          TX packets:132 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:26130 (25.5 KiB)  TX bytes:25947 (25.3 KiB)

1.7、添加/删除默认网关

添加默认网关：

root@fl-imx6ull:~#route add default gw 192.168.20.1

删除默认网关：

root@fl-imx6ull:~#route del default gw 192.168.20.1

1.8、关闭开启网卡

关闭eth0网卡：

root@fl-imx6ull:~#ifconfig eth0 down

开启eth0网卡：

root@fl-imx6ull:~#ifconfig eth0 up
fec 20b4000.ethernet eth0: Freescale FEC PHY driver [Micrel KSZ8081 or KSZ8091] (mii_bus:phy_addr=20b4000.ethernet:01, irq=-1)
root@fl-imx6ull:~# fec 20b4000.ethernet eth0: Link is Up - 100Mbps/Full - flow control rx/tx

2、 FTP服务

2.1、设置root用户密码，这里设置为forlinx，输入密码没有回显，串口终端无法看到输入内容。

root@imx6ullevk:~# passwd root
New password:
Re-enter new password:

2.2、然后配置开发板ip地址，保证和电脑通信正常。

root@imx6ullevk:~#ifconfig eth0 192.168.2.207
root@imx6ullevk:~#ping 192.168.2.135 -c 3

2.3、电脑使用FileZilla连接iMX6ULL开发板。

2.3.1. 点击文件，站点管理器：

2.3.2. 创建“新站点”，主机输入开发板IP，加密方式选择只是用明文FTP，登陆类型选择正常，用户和密码为开发板的用户和密码，点击“连接”。

3、SSH登录测试

以太网相关服务测试之前，确保已经设置好IP。设置IP请参考以太网驱动测试部分。

配置信息：

开发板ip：192.168.2.85

Linux主机地址：192.168.2.149

Windows主机地址：192.168.2.12

3.1、测试由linux主机通过ssh访问开发板

zs@developer-RH2485-V2:~$ssh root@192.168.2.85
The authenticity of host '192.168.2.85 (192.168.2.85)' can't be established.
RSA key fingerprint is 25:57:00:82:72:8f:09:8e:2d:b9:9b:41:e5:d6:06:bb.
Are you sure you want to continue connecting (yes/no)? y
Please type 'yes' or 'no': yes
Warning: Permanently added '192.168.2.85' (RSA) to the list of known hosts.

3.2、测试由Windows主机通过cmd.exe或者Cmder访问开发板：

$  ssh root@192.168.2.85
root@fl-imx6ull:~#

3.3、由iMX6ULL开发板访问linux主机

root@fl-imx6ull:~#dbclient zs@192.168.2.149
Host '192.168.2.149' is not in the trusted hosts file.
(ecdsa-sha2-nistp256 fingerprint md5 93:ff:74:8a:ed:ba:fd:21:39:d9:87:93:ad:9e:19:6f)
Do you want to continue connecting? (y/n) y
zs@192.168.2.149's password:
Welcome to Ubuntu 14.04.5 LTS (GNU/Linux 4.4.0-31-generic x86_64)
 * Documentation:  https://help.ubuntu.com/
504 packages can be updated.
421 updates are security updates.
New release '16.04.6 LTS' available.
Run 'do-release-upgrade' to upgrade to it.
Last login: Mon Mar 23 12:50:22 2020 from 192.168.2.87

4、USB转网络测试

4.1、将USB转以太网插入USB host接口，识别信息如下：

usb 1-1.3: new high-speed USB device number 8 using ci_hdrc

asix 1-1.3:1.0 eth2: register 'asix' at usb-ci_hdrc.1-1.3, ASIX AX88772B USB 2.0 Ethernet, 00:0e:c6:8f:9c:b7

IPv6: ADDRCONF(NETDEV_UP): eth2: link is not ready

4.2、测试方法参考以太网驱动测试章节。

二、无线网络测试

1、WIFI测试

RTL8188eus—USB WIFI、RTL8723bu—USB WIFI使用方法如下。

1.1、USB WIFI RTL8188eus使用

USB WIFI无线局域网卡是选配模块。

步骤1：开发板上电，启动Linux系统。

步骤2：连接USB WIFI到飞凌开发板的USB host接口，正确安装如下图。

步骤3：打开脚本所在的位置：

root@fl-imx6ull:~#cd /forlinx/shell/

步骤4：按照如下格式输入相应的参数：

说明：

-s表示wifi热点的名称

-p表示密码，如果没有密码请输入-p NONE

路由器采用wpa加密方式。

连接打印内容如下：

root@fl-imx6ull:/forlinx/shell#./wifi.sh -i 8188 -s forlinx -p xxxx
wifi 8188
ssid forlinx
pasw xxxx
usbcore: deregistering interface driver rtl8723bu
RTL871X: module exit start
usbcore: deregistering interface driver rtl8188eu
RTL871X: rtw_ndev_uninit(wlan1)
usb 1-1.3: reset high-speed USB device number 7 using ci_hdrc
RTL871X: module exit success
RTL871X: module init start
RTL871X: rtl8188eu v4.3.0.9_15178.20150907
RTL871X: build time: Mar 25 2020 02:23:46
bFWReady == _FALSE call reset 8051...
RTL871X: rtw_ndev_init(wlan0)
usbcore: registered new interface driver rtl8188eu
RTL871X: module init ret=0
==> rtl8188e_iol_efuse_patch
IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not read
ps: invalid option -- 'f'
BusyBox v1.24.1 (2019-04-27 02:24:01 CST) multi-call binary.
Usage: ps
Successfully initialized wpa_supplicant
rfkill: Cannot open RFKILL controRTL871X: set bssid:00:00:00:00:00:00
l device
RTL871X: set ssid [g▒isQ▒J▒)ͺ▒▒▒▒F|▒T▒▒vZ.c3▒ɚ�<▒▒▒▒] fw_state=0x00000008
ioctl[SIOCSIWAP]: Operation not permitted
ioctl[SIOCGIWSCAN]: Resource temporarily unavailable
ioctl[SIOCGIWSCAN]: Resource temporarily unavailable
RTL871X: indicate disassoc
wlan0: Trying to associate with 04:d7:a5:84:fa:40 (SSID='forlinx' freq=2437 MHz)
RTL871X: set ssid [forlinx] fw_state=0x00000008
RTL871X: set bssid:04:d7:a5:84:fa:40
RTL871X: start auth
RTL871X: auth success, start assoc
RTL871X: assoc success
IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
RTL871X: recv eapol packet
wlan0: Associated with 04:d7:a5:84:fa:40
RTL871X: send eapol packet
RsvdPageNum: 8
udhcpc (v1.24.1) started
RTL871X: recv eapol packet
RTL871X: send eapol packet
RTL871X: recv eapol packet
RTL871X: send eapol packet
RTL871X: set pairwise key camid:4, addr:04:d7:a5:84:fa:40, kid:0, type:AES
wlan0: WPA: Key negotiation completed with 04:d7:a5:84:fa:40 [PTKRTL871X: set group key camid:5, addr:04:d7:a5:84:fa:40, kid:2, type:AES
=CCMP GTK=CCMP]
wlan0: CTRL-EVENT-CONNECTED - Connection to 04:d7:a5:84:fa:40 completed [id=0 id_str=]
Sending discover...
Sending select for 192.168.4.129...
Lease of 192.168.4.129 obtained, lease time 36000
/etc/udhcpc.d/50default: Adding DNS 222.222.202.202
/etc/udhcpc.d/50default: Adding DNS 222.222.222.222
Finshed!

步骤5：ping ip或者域名，命令如下。

root@fl-imx6ull:/forlinx/shell#ping -c 4 www.baidu.com
PING www.baidu.com (220.181.38.149): 56 data bytes
64 bytes from 220.181.38.149: seq=0 ttl=51 time=26.648 ms
64 bytes from 220.181.38.149: seq=1 ttl=51 time=13.529 ms
64 bytes from 220.181.38.149: seq=2 ttl=51 time=15.656 ms
64 bytes from 220.181.38.149: seq=3 ttl=51 time=26.249 ms
--- www.baidu.com ping statistics ---
4 packets transmitted, 4 packets received, 0% packet loss
round-trip min/avg/max = 13.529/20.520/26.648 ms

步骤6：卸载已经加入内核的模块。

root@fl-imx6ull:/forlinx/shell#rmmod 8188eu
RTL871X: module exit start
usbcore: deregistering interface driver rtl8188eu
RTL871X: indicate disassoc
RTL871X: rtw_cmd_thread: DriverStopped(1) SurpriseRemoved(0) break at line 478
wlan0: CTRL-EVENT-DISCONNECTED bssid=04:d7:a5:84:fa:40 reason=3 locally_generated=1
RTL871X: rtw_ndev_uninit(wlan0)
RTL871X: rtw_dev_unload: driver not in IPS
usb 1-1.3: reset high-speed USB device number 7 using ci_hdrc
RTL871X: module exit success

2、板载WIFI的使用

如果开发板有板载的WIFI无线局域网卡，则焊接在评估板如图所示位置：

步骤1：检查开发板是否已经焊接该模块，正确焊接如上图。连接上天线。

步骤2：开发板上电，启动Linux系统。

步骤3：进入测试脚本所在目录：

root@fl-imx6ull:~# cd /forlinx/shell

步骤4：执行测试脚本：

说明：-s表示wifi热点的名称；

-p表示密码，如果没有密码请输入-p NONE；

路由器采用wpa加密方式。

连接打印内容如下：

root@fl-imx6ull:/forlinx/shell#./wifi.sh -i 8723 -sforlinx -pxxxx
wifi 8723
ssid forlinx
paswxxxx
usbcore: deregistering interface driver rtl8723bu
usbcore: registered new interface driver rtl8723bu
IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
ps: invalid option -- 'f'
BusyBox v1.24.1 (2019-04-27 02:24:01 CST) multi-call binary.
Usage: ps
Successfully initialized wpa_supplicant
rfkill: Cannot open RFKILL control device
wlan0: Trying to associate with 04:d7:a5:84:fa:40 (SSID='forlinx' freq=2437 MHz)
IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
wlan0: Associated with 04:d7:a5:84:fa:40
wlan0: WPA: Key negotiation completed with 04:d7:a5:84:fa:40 [PTK=CCMP GTK=CCMP]
wlan0: CTRL-EVENT-CONNECTED - Connection to 04:d7:a5:84:fa:40 completed [id=0 id_str=]
udhcpc (v1.24.1) started
Sending discover...
Sending discover...
Sending select for 192.168.4.225...
Lease of 192.168.4.225 obtained, lease time 36000
/etc/udhcpc.d/50default: Adding DNS 222.222.202.202
/etc/udhcpc.d/50default: Adding DNS 222.222.222.222
Finshed!

步骤5：ping ip或者域名，命令如下。

root@fl-imx6ull:/forlinx/shell#ping -c 5 192.168.4.1
PING 192.168.4.1 (192.168.4.1): 56 data bytes
64 bytes from 192.168.4.1: seq=0 ttl=128 time=39.783 ms
64 bytes from 192.168.4.1: seq=1 ttl=128 time=81.529 ms
64 bytes from 192.168.4.1: seq=2 ttl=128 time=15.236 ms
64 bytes from 192.168.4.1: seq=3 ttl=128 time=12.076 ms
64 bytes from 192.168.4.1: seq=4 ttl=128 time=16.300 ms
--- 192.168.4.1 ping statistics ---
5 packets transmitted, 5 packets received, 0% packet loss
round-trip min/avg/max = 12.076/32.984/81.529 ms

步骤6：卸载已经加入内核的模块：

root@fl-imx6ull:/forlinx/shell#rmmod 8723bu
usbcore: deregistering interface driver rtl8723bu
wlan0: CTRL-EVENT-DISCONNECTED bssid=04:d7:a5:84:fa:40 reason=0

2、4G模块实现IE上网

2.1、将外扩USB 4G扩展板插入USB口，固定ME909s-821 PCIE封装4G模块，安装ipex天线座，买QQ靓号地图插入SIM卡，开机上电。

2.2、拨号上网

root@fl-imx6ull:~#cd /forlinx/shell/
root@fl-imx6ull:/forlinx/shell#./me909s.sh
eth0      Link encap:Ethernet  HWaddr 7E:09:81:93:F3:0A
eth1      Link encap:Ethernet  HWaddr DE:EA:3F:6C:A7:33
wlan0     Link encap:Ethernet  HWaddr 7C:A7:B0:0F:FC:14
udhcpc (v1.24.1) started
Sending discover...
Sending select for 10.63.223.158...
Lease of 10.63.223.158 obtained, lease time 518400
/etc/udhcpc.d/50default: Adding DNS 222.222.222.222
/etc/udhcpc.d/50default: Adding DNS 222.222.202.202
fec 20b4000.ethernet eth0: Freescale FEC PHY driver [Micrel KSZ8081 or KSZ8091] (mii_bus:phy_addr=20b4000.ethernet:01, irq=-1)
IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready
fec 2188000.ethernet eth1: Freescale FEC PHY driver [Micrel KSZ8081 or KSZ8091] (mii_bus:phy_addr=20b4000.ethernet:02, irq=-1)
IPv6: ADDRCONF(NETDEV_UP): eth1: link is not ready
Finished!

2.3、连接成功之后，ping百度测试：

root@fl-imx6ull:/forlinx/shell#ping www.baidu.com
PING www.baidu.com (220.181.38.150): 56 data bytes
64 bytes from 220.181.38.150: seq=0 ttl=53 time=59.450 ms
64 bytes from 220.181.38.150: seq=1 ttl=53 time=71.086 ms
64 bytes from 220.181.38.150: seq=2 ttl=53 time=57.385 ms
64 bytes from 220.181.38.150: seq=3 ttl=53 time=71.033 ms
--- www.baidu.com ping statistics ---
4 packets transmitted, 4 packets received, 0% packet loss
round-trip min/avg/max = 57.385/64.738/71.086 ms

2.4、断网与复位指令测试：

断开网络连接：

root@fl-imx6ull:/forlinx/shell#echo "AT^NDISDUP=1,0"> /dev/ttyUSB2

复位重启模块：

root@fl-imx6ull:/forlinx/shell#echo "AT^RESET "> /dev/ttyUSB2

2.5、更换SIM卡需要更换me909.sh中相应的APN：

中国移动：

echo "AT^NDISDUP=1,1,\"cmnet\""> /dev/ttyUSB2

中国联通：

echo "AT^NDISDUP=1,1,\"3gnet\""> /dev/ttyUSB2

中国电信（本文使用）：

echo "AT^NDISDUP=1,1,\"ctnet\""> /dev/ttyUSB2

3、GPRS模块测试

GPRS模块与开发板之间采用串口连接，客户可以使用飞凌公司自产的GPRS模块，也可以使用自己购买的串口GPRS模块。

1）在确保模块和开发板串口UART3连接、上电OK情况下，启动开发板子，进入命令行终端输入如下命令。

root@fl-imx6ull:~#cd /forlinx/shell/
root@fl-imx6ull:~#pppd call gprs /dev/ttymxc2 &
[1] 638
root@fl-imx6ull:/etc/ppp/peers# timeout set to 15 seconds
abort on (\nDELAYED\r)
abort on (\nBUSY\r)
abort on (\nERROR\r)
abort on (\nNO DIALTONE\r)
abort on (\nNO CARRIER\r)
send (^MAT^M)
expect (OK)
AT^M^M
OK
 -- got it
send (ATS0=0^M)
expect (OK)
^M
ATS0=0^M^M
OK
 -- got it
 
send (ATE0V1^M)
expect (OK)
^M
ATE0V1^M^M
OK
 -- got it
send (AT+CGDCONT=1,"IP","CMNET"^M)
expect (OK)
^M
^M
OK
 -- got it
 
send (ATDT*99***1#^M)
expect (CONNECT)
^M
^M
CONNECT
 -- got it
 
send (^M)
Script /usr/sbin/chat -s -v -f /etc/ppp/peers/chat-gprs-connect finished (pid 639), status = 0x0
Serial connection established.
using channel 1
Using interface ppp0
Connect: ppp0 <--> /dev/ttymxc2
sent [LCP ConfReq id=0x1 <asyncmap 0x0> <magic 0x23b2996e> <pcomp> <accomp>]
rcvd [LCP ConfReq id=0x1 <asyncmap 0xa0000> <auth pap>]
No auth is possible
sent [LCP ConfRej id=0x1 <auth pap>]
rcvd [LCP ConfRej id=0x1 <magic 0x23b2996e> <pcomp> <accomp>]
sent [LCP ConfReq id=0x2 <asyncmap 0x0>]
rcvd [LCP ConfReq id=0x2 <asyncmap 0xa0000> <auth chap MD5>]
No auth is possible
sent [LCP ConfRej id=0x2 <auth chap MD5>]
rcvd [LCP ConfAck id=0x2 <asyncmap 0x0>]
rcvd [LCP ConfReq id=0x3 <asyncmap 0xa0000>]
sent [LCP ConfAck id=0x3 <asyncmap 0xa0000>]
sent [IPCP ConfReq id=0x1 <compress VJ 0f 01> <addr 0.0.0.0> <ms-dns1 0.0.0.0> <ms-dns2 0.0.0.0>]
sent [IPCP ConfReq id=0x1 <compress VJ 0f 01> <addr 0.0.0.0> <ms-dns1 0.0.0.0> <ms-dns2 0.0.0.0>]
sent [IPCP ConfReq id=0x1 <compress VJ 0f 01> <addr 0.0.0.0> <ms-dns1 0.0.0.0> <ms-dns2 0.0.0.0>]
sent [IPCP ConfReq id=0x1 <compress VJ 0f 01> <addr 0.0.0.0> <ms-dns1 0.0.0.0> <ms-dns2 0.0.0.0>]
rcvd [IPCP ConfReq id=0x1 <addr 192.200.1.21>]
sent [IPCP ConfAck id=0x1 <addr 192.200.1.21>]
rcvd [IPCP ConfRej id=0x1 <compress VJ 0f 01>]
sent [IPCP ConfReq id=0x2 <addr 0.0.0.0> <ms-dns1 0.0.0.0> <ms-dns2 0.0.0.0>]
rcvd [IPCP ConfNak id=0x2 <addr 10.131.70.33> <ms-dns1 111.11.1.3> <ms-dns2 111.11.11.3>]
sent [IPCP ConfReq id=0x3 <addr 10.131.70.33> <ms-dns1 111.11.1.3> <ms-dns2 111.11.11.3>]
rcvd [IPCP ConfAck id=0x3 <addr 10.131.70.33> <ms-dns1 111.11.1.3> <ms-dns2 111.11.11.3>]
not replacing existing default route via 192.168.1.1 with metric -1
local  IP address 10.131.70.33
remote IP address 192.200.1.21
primary   DNS address 111.11.1.3
secondary DNS address 111.11.11.3

2）连接成功可以尝试ping一下www.forlinx.com

root@fl-imx6ull:~#ping www.forlinx.com
PING www.forlinx.com (39.156.66.18): 56 data bytes
64 bytes from 39.156.66.18: seq=0 ttl=51 time=315.605 ms
64 bytes from 39.156.66.18: seq=1 ttl=51 time=732.351 ms
64 bytes from 39.156.66.18: seq=2 ttl=51 time=234.874 ms
64 bytes from 39.156.66.18: seq=3 ttl=51 time=2990.813 ms
64 bytes from 39.156.66.18: seq=4 ttl=51 time=2110.219 ms
64 bytes from 39.156.66.18: seq=5 ttl=51 time=1151.022 ms
64 bytes from 39.156.66.18: seq=6 ttl=51 time=450.403 ms
64 bytes from 39.156.66.18: seq=7 ttl=51 time=4650.867 ms
64 bytes from 39.156.66.18: seq=8 ttl=51 time=3747.240 ms
64 bytes from 39.156.66.18: seq=9 ttl=51 time=2866.635 ms
64 bytes from 39.156.66.18: seq=10 ttl=51 time=1986.155 ms
64 bytes from 39.156.66.18: seq=11 ttl=51 time=1087.178 ms
64 bytes from 39.156.66.18: seq=12 ttl=51 time=368.113 ms
--- www.forlinx.com ping statistics ---
13 packets transmitted, 13 packets received, 0% packet loss
round-trip min/avg/max = 234.874/1745.498/4650.867 ms

注意：假如ping命令不通，可能是之前测试以太网或无线网络接口时的一些配置的影响，此时需要先执行以下命令再测试模块：

root@imx6ulevk:~# ifconfig eth0 down
root@imx6ulevk:~#ifconfig wlan0 down

码农公寓

一、有线网络测试

二、无线网络测试

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