Hi!
I draw my own board according to the bf609-ezkit, and the ucLinux is almost the default one. When I power on that board, everything seems works fine, and eth0 can be reached through "ping" cmd.
But if I repower the board again and again(about 40 times), some one time eth0 always can't be reached through "ping". In this situation, I unplug the network cable and pull in again, the board out puts:
root:/> PHY: stmmac-0:01 - Link is Down
PHY: stmmac-0:01 - Link is Up - 100/Full
root:/> ping 192.168.61.93
PING 192.168.61.93 (192.168.61.93): 56 data bytes
^C
--- 192.168.61.93 ping statistics ---
319 packets transmitted, 0 packets received, 100% packet loss
root:/> arp -a
? (192.168.61.93) at <incomplete> on eth0
root:/> ifconfig
can0 Link encap:UNSPEC HWaddr 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00
UP RUNNING NOARP MTU:16 Metric:1
RX packets:6083 errors:3041 dropped:0 overruns:0 frame:3041
TX packets:424 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:10
RX bytes:48664 (47.5 KiB) TX bytes:2218 (2.1 KiB)
eth0 Link encap:Ethernet HWaddr 02:80:AD:20:31:6B
inet addr:192.168.61.107 Bcast:192.168.61.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:17 errors:0 dropped:3 overruns:0 frame:0
TX packets:0 errors:2 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:2714 (2.6 KiB) TX bytes:29232 (28.5 KiB)
Interrupt:75
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:617 errors:0 dropped:0 overruns:0 frame:0
TX packets:617 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:67490 (65.9 KiB) TX bytes:67490 (65.9 KiB)
As above says, when I ping again, it says failed.
But, if I "ifconfig eth0 down", and then "ifconfig eth0 up", it works OK again.
root:/> ifconfig eth0 down
root:/> ifconfig eth0 up
eth0: device MAC address 02:80:ad:20:31:6b
No MAC Management Counters available
root:/> ifconfig eth0 up PHY: stmmac-0:01 - Link is Up - 100/Full
root:/> ping 192.168.61.93
PING 192.168.61.93 (192.168.61.93): 56 data bytes
64 bytes from 192.168.61.93: seq=0 ttl=128 time=1.293 ms
64 bytes from 192.168.61.93: seq=1 ttl=128 time=0.819 ms
64 bytes from 192.168.61.93: seq=2 ttl=128 time=0.762 ms
^C
--- 192.168.61.93 ping statistics ---
3 packets transmitted, 3 packets received, 0% packet loss
round-trip min/avg/max = 0.762/0.958/1.293 ms
root:/>
Why sometimes eth0 fail to send data out?
