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遇到一个怪异的故障,望大家给点思路。
1,服务器为windows 2000操作系统,其IP设置及路由表如下所示:
C:\Documents and Settings\chenqingdong2>ipconfig
Windows 2000 IP Configuration
Ethernet adapter 本地连接 2:
Connection-specific DNS Suffix . :
IP Address. . . . . . . . . . . . : 10.34.1.18
Subnet Mask . . . . . . . . . . . : 255.255.248.0
Default Gateway . . . . . . . . . : 10.34.1.1
Ethernet adapter 本地连接:
Media State . . . . . . . . . . . : Cable Disconnected
C:\Documents and Settings\chenqingdong2>route print
======================================================================
Interface List
0x1 ........................... MS TCP Loopback interface
0x1000003 ...00 a0 d1 e4 03 84 ...... Broadcom NetXtreme Gigabit Ethernet Driver
0x1000004 ...00 a0 d1 e4 02 da ...... Broadcom NetXtreme Gigabit Ethernet Driver
======================================================================
======================================================================
Active Routes:
Network Destination Netmask Gateway Interface Metric
0.0.0.0 0.0.0.0 10.34.1.1 10.34.1.18 1
10.34.0.0 255.255.248.0 10.34.1.18 10.34.1.18 1
10.34.1.18 255.255.255.255 127.0.0.1 127.0.0.1 1
10.255.255.255 255.255.255.255 10.34.1.18 10.34.1.18 1
127.0.0.0 255.0.0.0 127.0.0.1 127.0.0.1 1
224.0.0.0 224.0.0.0 10.34.1.18 10.34.1.18 1
255.255.255.255 255.255.255.255 10.34.1.18 1000003 1
Default Gateway: 10.34.1.1
======================================================================
Persistent Routes:
None
2,服务器ping 网关10.34.1.1和其他地址全部显示目的主机不可达,具体显示如下:
C:\Documents and Settings\chenqingdong2>ping 10.34.1.1
Pinging 10.34.1.1 with 32 bytes of data:
Destination host unreachable.
Destination host unreachable.
Destination host unreachable.
Destination host unreachable.
Ping statistics for 10.34.1.1:
Packets: Sent = 4, Received = 0, Lost = 4 (100% loss),
Approximate round trip times in milli-seconds:
Minimum = 0ms, Maximum = 0ms, Average = 0ms
C:\Documents and Settings\chenqingdong2>ping www.163.com
Pinging www.cache.split.netease.com [220.181.28.51] with 32 bytes of data:
Destination host unreachable.
Destination host unreachable.
Destination host unreachable.
Destination host unreachable.
Ping statistics for 220.181.28.51:
Packets: Sent = 4, Received = 0, Lost = 4 (100% loss),
Approximate round trip times in milli-seconds:
Minimum = 0ms, Maximum = 0ms, Average = 0ms
Ping网关时,在服务器上抓包,没有发现服务器向网关发送的ARP请求包。
3,服务器可以正常访问互联网;
4,内网其他机器无法访问服务器,以ping做测试,在服务器上抓包,显示服务器收到了内网机器的请求包,但是未回应包。
问题:可能是什么原因导致了这种怪异的故障?如何在数据包发送到网卡前跟踪数据包? |
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