二者分别显示的是路由路径的出口和入口：
ping显示每一个节点的出口：
Pinging 163.xdwscache.glb0.lxdns.com [114.80.143.196] with 32 bytes of data:
Reply from 114.80.143.196: bytes=32 time=33ms TTL=57
Route: 58.38.205.13 ->
222.72.255.78 ->
222.72.255.77 ->
124.74.215.25 ->
124.74.186.201 ->
114.80.143.57 ->
114.80.143.65 ->
114.80.143.196 ->
而tracert现实的则是每个路由器的入口：
C:\Documents and Settings\redcats2>tracert www.163.com
Tracing route to 163.xdwscache.glb0.lxdns.com [114.80.143.196]
over a maximum of 30 hops:
1 3 ms 2 ms 1 ms buffalo.setup [192.168.11.1]
2 12 ms 10 ms 15 ms 124.74.0.197
3 12 ms 12 ms 15 ms 222.72.255.93
4 96 ms 59 ms 11 ms 124.74.210.121
5 24 ms 18 ms 17 ms 124.74.254.58
6 15 ms 14 ms 18 ms 124.74.186.206
7 12 ms 14 ms 18 ms 114.80.143.62
8 16 ms 14 ms 14 ms 114.80.143.196
