TQIMX6ULL测试----网络设备

imx6ull支持双网卡。烧写使用tq-imx6ull_net0_net1.dtb就是双网卡，下面只以eth0为例子讲解。eth1方法也一样。靠近耳机接口那一端子的是eth0.
测试网卡模块时，接上网线，如果当前网卡是状态是down，网卡灯是不会亮的。在命令行输入操作如下：

# udhcpc -i eth0 
udhcpc: started, v1.25.1
fec 2188000.ethernet eth0: Freescale FEC PHY driver [Micrel KSZ8081 or KSZ8091] (mii_bus:phy_addr=2188000.ethernet:02, irq=-1)
IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready
udhcpc: sending discover
fec 2188000.ethernet eth0: Link is Up - 100Mbps/Full - flow control rx/tx
IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
udhcpc: sending discover
udhcpc: sending select for 192.168.1.236    #成功分配到ip
udhcpc: lease of 192.168.1.236 obtained, lease time 7200
deleting routers
adding dns 202.96.128.166                   #自动设置dns
adding dns 202.96.134.133
# ping www.qq.com
PING www.qq.com (14.17.32.211) 56(84) bytes of data.
64 bytes from 14.17.32.211 (14.17.32.211): icmp_seq=1 ttl=55 time=5.34 ms
64 bytes from 14.17.32.211 (14.17.32.211): icmp_seq=2 ttl=55 time=5.12 ms
64 bytes from 14.17.32.211 (14.17.32.211): icmp_seq=3 ttl=55 time=7.80 ms
64 bytes from 14.17.32.211 (14.17.32.211): icmp_seq=4 ttl=55 time=5.41 ms
^C
--- www.qq.com ping statistics ---
4 packets transmitted, 4 received, 0% packet loss, time 3004ms
rtt min/avg/max/mdev = 5.122/5.923/7.804/1.091 ms

如果一直循环打印一下信息说明网卡模块正常，测试完成后，在命令行按ctrl+c键中断ping。
以上是测试外网的。如果不能连接外网。可以设置ip后直接与pc互ping。

# ifconfig eth0 192.168.1.40 up             #设置板子ip要与电脑ip为同网段
fec 2188000.ethernet eth0: Freescale FEC PHY driver [Micrel KSZ8081 or KSZ8091] (mii_bus:phy_addr=2188000.ethernet:02, irq=-1)
# ifconfig eth0 downfec 2188000.ethernet eth0: Link is Up - 100Mbps/Full - flow control rx/tx
# ping -I eth0 192.168.1.49                 #指定使用eth0 ping pc的ip(192.168.1.49)
PING 192.168.1.49 (192.168.1.49) from 192.168.1.40 eth0: 56(84) bytes of data.
64 bytes from 192.168.1.49: icmp_seq=1 ttl=64 time=0.625 ms
64 bytes from 192.168.1.49: icmp_seq=2 ttl=64 time=0.393 ms
64 bytes from 192.168.1.49: icmp_seq=3 ttl=64 time=0.378 ms
64 bytes from 192.168.1.49: icmp_seq=4 ttl=64 time=0.351 ms
64 bytes from 192.168.1.49: icmp_seq=5 ttl=64 time=0.374 ms
^C
--- 192.168.1.49 ping statistics ---
5 packets transmitted, 5 received, 0% packet loss, time 3998ms
rtt min/avg/max/mdev = 0.351/0.424/0.625/0.102 ms
#

如果打印以下信息说明网络不通：
ping: bad address ‘www.qq.com’
可能是ip或者dns没有设置对。
另外如果同时两个网口都接上网线时，两个网卡的ip要设置成不同的网段。

TQIMX6ULL测试----网络设备

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