用商家提供的网线将开发板(6410)插在路由器上,串口一直出现一下界面
eth0: link up, 100Mbps, half-duplex, lpa 0x40A1
eth0: link down
eth0: link up, 100Mbps, half-duplex, lpa 0x40A1
eth0: link down
eth0: link up, 100Mbps, half-duplex, lpa 0x40A1
eth0: link down
eth0: link up, 100Mbps, half-duplex, lpa 0x40A1
eth0: link down
eth0: link up, 100Mbps, half-duplex, lpa 0x40A1
eth0: link down
eth0: link up, 100Mbps, half-duplex, lpa 0x40A1
eth0: link down
eth0: link up, 100Mbps, half-duplex, lpa 0x40A1
eth0: link down
eth0: link up, 100Mbps, half-duplex, lpa 0x40A1
eth0: link down
eth0: link up, 100Mbps, half-duplex, lpa 0x40A1
eth0: link down
eth0: link up, 100Mbps, half-duplex, lpa 0x40A1
eth0: link down
eth0: link up, 100Mbps, half-duplex, lpa 0x40A1
eth0: link down
老是link up 然后 link down
而同一条网线用在mini2440上可以正常联网。请问这是为什么?