问题描述：
C:\Documents and Settings\Administrator>tracert www.baidu.com
Tracing route to www.a.shifen.com [220.181.6.6]
over a maximum of 30 hops:
1 * * * Request timed out.
2 * * * Request timed out.
3 * * * Request timed out.
4 * * * Request timed out.
5 * * * Request timed out.
6 * * * Request timed out.
7 * * * Request timed out.
8 * * * Request timed out.
9 * * * Request timed out.
10 * * * Request timed out.
11 * * * Request timed out.
12 * * * Request timed out.
13 * * * Request timed out.
14 * * * Request timed out.
15 * * * Request timed out.
16 109 ms 114 ms 109 ms 220.181.6.6
Trace complete.
为什么 中间都是 *？？？？？
Pinging www.a.shifen.com [220.181.6.6] with 32 bytes of data:
Reply from 220.181.6.6: bytes=32 time=229ms TTL=48
Reply from 220.181.6.6: bytes=32 time=265ms TTL=47
Reply from 220.181.6.6: bytes=32 time=123ms TTL=48
Reply from 220.181.6.6: bytes=32 time=225ms TTL=47
Ping statistics for 220.181.6.6:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 123ms, Maximum = 265ms, Average = 210ms
问题解答：
是不是你的网线不好呀, 你用Ping试试.
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