sama5d3 xplained 系统加载后确认使用的网口

【补充方案】
在开发板上明确标识出了 ETH1及 ETH0/GETH标识号
通过ifconfig发现只有eth0及lo两个网络接口，即可确定网线该插入eth0口。

【原来解决方案】
官方使用的文件系统是 Poky 1.5.1
1. 进入文件系统后检查网络配置情况，发现IP地址没有配置
root@sama5d3_xplained:~# ifconfig eth0
eth0      Link encap:Ethernet  HWaddr 06:b7:e8:f8:58:a1
          UP BROADCAST MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)
          Interrupt:26 Base address:0x8000

2. 将IP地址配置成一个网段
root@sama5d3_xplained:~# ifconfig eth0 192.168.1.81
root@sama5d3_xplained:~# ifconfig
eth0      Link encap:Ethernet  HWaddr 06:b7:e8:f8:58:a1
          inet addr:192.168.1.81  Bcast:192.168.1.255  Mask:255.255.255.0
          UP BROADCAST MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)
          Interrupt:26 Base address:0x8000

lo        Link encap:Local Loopback
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:65536  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

3. ping一下宿主机，PING不通
root@sama5d3_xplained:~# ping 192.168.1.25
PING 192.168.1.25 (192.168.1.25) 56(84) bytes of data.
From 192.168.1.81 icmp_seq=1 Destination Host Unreachable
From 192.168.1.81 icmp_seq=2 Destination Host Unreachable
From 192.168.1.81 icmp_seq=3 Destination Host Unreachable
From 192.168.1.81 icmp_seq=4 Destination Host Unreachable
From 192.168.1.81 icmp_seq=5 Destination Host Unreachable
From 192.168.1.81 icmp_seq=6 Destination Host Unreachable

4. 诊断当前的eth0是哪一个网口（支持到1000baseT，即千兆网口）
root@sama5d3_xplained:~# ethtool eth0
Settings for eth0:
        Supported ports: [ TP MII ]
        Supported link modes:   10baseT/Half 10baseT/Full
                                100baseT/Half 100baseT/Full
                                1000baseT/Half 1000baseT/Full
        Supported pause frame use: No
        Supports auto-negotiation: Yes
        Advertised link modes:  10baseT/Half 10baseT/Full
                                100baseT/Half 100baseT/Full
                                1000baseT/Half 1000baseT/Full
        Advertised pause frame use: No
        Advertised auto-negotiation: Yes
        Speed: 10Mb/s
        Duplex: Half
        Port: MII
        PHYAD: 7
        Transceiver: external
        Auto-negotiation: on
        Link detected: no

5. 将网线插到千兆网口后，重新ping宿主机，Ok.

转载于:https://www.cnblogs.com/aqing1987/p/4290308.html

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