ping不通外网,就能ping通内网,原因何在??

pcl001

[root@utu-Linux]\$ ping www.163.com/
ping: bad address 'www.163.com/'
[root@utu-Linux]\$ ping www.163.com
ping: bad address 'www.163.com'
[root@utu-Linux]\$ ping 220.181.28.212
PING 220.181.28.212 (220.181.28.212): 56 data bytes
ping: sendto: Network is unreachable
[root@utu-Linux]\$ ping 192.168.16.2  
PING 192.168.16.2 (192.168.16.2): 56 data bytes
eth0: link up, 100Mbps, full-duplex, lpa 0x45E1
64 bytes from 192.168.16.2: seq=12 ttl=128 time=2005.997 ms
64 bytes from 192.168.16.2: seq=13 ttl=128 time=1001.469 ms
64 bytes from 192.168.16.2: seq=14 ttl=128 time=0.910 ms
64 bytes from 192.168.16.2: seq=15 ttl=128 time=0.848 ms

--- 192.168.16.2 ping statistics ---
16 packets transmitted, 4 packets received, 75% packet loss
round-trip min/avg/max = 0.848/752.306/2005.997 ms
[root@utu-Linux]\$ ping 220.181.28.212
PING 220.181.28.212 (220.181.28.212): 56 data bytes
ping: sendto: Network is unreachable
[root@utu-Linux]\$ ping 220.181.28.212
PING 220.181.28.212 (220.181.28.212): 56 data bytes
ping: sendto: Network is unreachable
[root@utu-Linux]\$ ifconfig
eth0      Link encap:Ethernet  HWaddr 00:12:34:56:80:49  
          inet addr:192.168.16.168  Bcast:192.168.16.255  Mask:255.255.255.0
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:291 errors:0 dropped:0 overruns:0 frame:0
          TX packets:5 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:35238 (34.4 KiB)  TX bytes:434 (434.0 B)
          Interrupt:53 Base address:0x2300

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:16 errors:0 dropped:0 overruns:0 frame:0
          TX packets:16 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:1808 (1.7 KiB)  TX bytes:1808 (1.7 KiB)

marsaber

检查网关是否正确；

chenyx

dns解析正常?

yidou

楼上正解。多半网关没对。

smallcat28

trace 一下看看是到哪里出问题了，应该就是网关，路由的问题

pcl001

谢谢 ,问题解决,是没设置缺省的网关

emmoblin

呵呵，明显没有网关麻

twlkyao

回复 1# pcl001


    楼主，你好，请问你是在嵌入式linux环境下碰到的这个问题吗？我现在也是这个问题，怎么解决啊？谢谢解答。

twlkyao

回复 7# emmoblin


   jffs2的文件系统， 网关在哪里设置啊？谢谢解答。