WIFI
开发板使用RTL8723DU模块，默认已适配好WIFI部分
连接WIFI
如图所示，找到系统右上角点击网络图标连接WIFI 
使用ifconfig命令查看ip地址等信息
root@linaro-alip:/# ifconfig
···
wlx78228877b4a5: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.137.149 netmask 255.255.255.0 broadcast 192.168.137.255
inet6 fe80::d175:3cd1:73ca:ecc8 prefixlen 64 scopeid 0x20<link>
ether 78:22:88:77:b4:a5 txqueuelen 1000 (Ethernet)
RX packets 69 bytes 954099 (931.7 KiB)
RX errors 0 dropped 143 overruns 0 frame 0
TX packets 72 bytes 116372 (113.6 KiB)
TX errors 0 dropped 23 overruns 0 carrier 0 collisions 0连通性测试
执行如下命令查看获取的 IP 地址，并通过 ping 命令测试开发板与 PC 机通信是否正常。 192.168.49.85为PC实际的IP地址，请确保开发板与 PC 机在同一局域网内。
root@linaro-alip:/# ping 192.168.49.85 -I wlx78228877b4a5 -c 8
ping 192.168.49.85 -I wlx78228877b4a5 -c 8
PING 192.168.49.85 (192.168.49.85) from 192.168.137.149 wlx78228877b4a5: 56(84) bytes of data.
64 bytes from 192.168.49.85: icmp_seq=1 ttl=127 time=5.14 ms
64 bytes from 192.168.49.85: icmp_seq=2 ttl=127 time=3.66 ms
64 bytes from 192.168.49.85: icmp_seq=3 ttl=127 time=2.83 ms
64 bytes from 192.168.49.85: icmp_seq=4 ttl=127 time=2.81 ms
64 bytes from 192.168.49.85: icmp_seq=5 ttl=127 time=9.44 ms
64 bytes from 192.168.49.85: icmp_seq=6 ttl=127 time=2.77 ms
64 bytes from 192.168.49.85: icmp_seq=7 ttl=127 time=3.46 ms
64 bytes from 192.168.49.85: icmp_seq=8 ttl=127 time=3.09 ms
--- 192.168.49.85 ping statistics ---
8 packets transmitted, 8 received, 0% packet loss, time 7011ms
rtt min/avg/max/mdev = 2.771/4.150/9.442/2.128 msTCP带宽测试
如下使用iperf3工具测试开发板与 PC 机的网络通信带宽。
服务端
在开发板上联网安装iperf3工具，执行如下命令：
root@linaro-alip:/# sudo apt update
root@linaro-alip:/# sudo apt install iperf3开发板做服务端，执行以下命令:
root@linaro-alip:/# iperf3 -s
-----------------------------------------------------------
Server listening on 5201 (test #1)
-----------------------------------------------------------客户端
windows的iperf3工具可以在测试工具包中获取。
在windows系统中打开powershell，进入iperf3工具所在路径下 windows做客户端发送数据，执行以下命令：
.\iperf3.exe -c 192.168.137.149 // 192.168.137.149为服务端IP地址测试结果
- 服务端
root@linaro-alip:/# iperf3 -s
-----------------------------------------------------------
Server listening on 5201 (test #1)
-----------------------------------------------------------
Accepted connection from 192.168.137.1, port 65396
[ 5] local 192.168.137.149 port 5201 connected to 192.168.137.1 port 65397
[ ID] Interval Transfer Bitrate
[ 5] 0.00-1.00 sec 4.88 MBytes 40.9 Mbits/sec
[ 5] 1.00-2.00 sec 5.40 MBytes 45.3 Mbits/sec
[ 5] 2.00-3.00 sec 5.22 MBytes 43.8 Mbits/sec
[ 5] 3.00-4.00 sec 5.36 MBytes 45.0 Mbits/sec
[ 5] 4.00-5.00 sec 5.14 MBytes 43.1 Mbits/sec
[ 5] 5.00-6.00 sec 5.22 MBytes 43.8 Mbits/sec
[ 5] 6.00-7.00 sec 5.40 MBytes 45.3 Mbits/sec
[ 5] 7.00-8.00 sec 5.12 MBytes 43.0 Mbits/sec
[ 5] 8.00-9.00 sec 5.38 MBytes 45.1 Mbits/sec
[ 5] 9.00-10.00 sec 5.24 MBytes 43.9 Mbits/sec
[ 5] 10.00-10.05 sec 266 KBytes 45.9 Mbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bitrate
[ 5] 0.00-10.05 sec 52.6 MBytes 43.9 Mbits/sec receiver
------------------------------------------------------------ 客户端
