问题描述：
Microsoft Windows XP [版本 5.1.2600]
(C) 版权所有 1985-2001 Microsoft Corp.
C:\Documents and Settings\Administrator>ping www.163.com -t
Ping request could not find host www.163.com. Please check the name and try agai
n.
C:\Documents and Settings\Administrator>ping www.163.com -t
Pinging www.cache.split.netease.com [202.108.9.37] with 32 bytes of data:
Reply from 202.108.9.37: bytes=32 time=142ms TTL=57
Reply from 202.108.9.37: bytes=32 time=135ms TTL=57
Reply from 202.108.9.37: bytes=32 time=120ms TTL=57
Reply from 202.108.9.37: bytes=32 time=47ms TTL=57
Reply from 202.108.9.37: bytes=32 time=200ms TTL=57
Reply from 202.108.9.37: bytes=32 time=177ms TTL=57
Request timed out.
Reply from 202.108.9.37: bytes=32 time=98ms TTL=57
Request timed out.
Reply from 202.108.9.37: bytes=32 time=105ms TTL=57
Request timed out.
Request timed out.
Request timed out.
Reply from 202.108.9.37: bytes=32 time=136ms TTL=57
Request timed out.
Reply from 202.108.9.37: bytes=32 time=293ms TTL=57
Reply from 202.108.9.37: bytes=32 time=81ms TTL=57
Reply from 202.108.9.37: bytes=32 time=160ms TTL=57
Reply from 202.108.9.37: bytes=32 time=129ms TTL=57
Reply from 202.108.9.37: bytes=32 time=95ms TTL=57
Reply from 202.108.9.37: bytes=32 time=238ms TTL=57
Reply from 202.108.9.37: bytes=32 time=117ms TTL=57
Reply from 202.108.9.37: bytes=32 time=197ms TTL=57
Request timed out.
Request timed out.
Request timed out.
Request timed out.
Reply from 202.108.9.37: bytes=32 time=160ms TTL=57
Request timed out.
Reply from 202.108.9.37: bytes=32 time=139ms TTL=57
Reply from 202.108.9.37: bytes=32 time=125ms TTL=57
Reply from 202.108.9.37: bytes=32 time=146ms TTL=57
Reply from 202.108.9.37: bytes=32 time=135ms TTL=57
Reply from 202.108.9.37: bytes=32 time=136ms TTL=57
Reply from 202.108.9.37: bytes=32 time=340ms TTL=57
Reply from 202.108.9.37: bytes=32 time=112ms TTL=57
Reply from 202.108.9.37: bytes=32 time=181ms TTL=57
Reply from 202.108.9.37: bytes=32 time=90ms TTL=57
Request timed out.
Request timed out.
Reply from 202.108.9.37: bytes=32 time=136ms TTL=57
Request timed out.
Reply from 202.108.9.37: bytes=32 time=76ms TTL=57
Request timed out.
Request timed out.
Reply from 202.108.9.37: bytes=32 time=187ms TTL=57
Reply from 202.108.9.37: bytes=32 time=135ms TTL=57
Reply from 202.108.9.37: bytes=32 time=141ms TTL=57
Reply from 202.108.9.37: bytes=32 time=125ms TTL=57
Reply from 202.108.9.37: bytes=32 time=152ms TTL=57
Reply from 202.108.9.37: bytes=32 time=121ms TTL=57
Reply from 202.108.9.37: bytes=32 time=120ms TTL=57
Reply from 202.108.9.37: bytes=32 time=147ms TTL=57
Reply from 202.108.9.37: bytes=32 time=99ms TTL=57
Reply from 202.108.9.37: bytes=32 time=168ms TTL=57
Reply from 202.108.9.37: bytes=32 time=106ms TTL=57
Reply from 202.108.9.37: bytes=32 time=144ms TTL=57
网页登陆速度很低，有时难以登陆。
今天我又把路由器IP重置了一次，想观察一下是否哪台机器中毒，但是麻烦更大了，连接上不久就掉线了，而且路由器也访问不了了！只有重启！每次都是这样啊！难道路由器当掉了么？！
发现arp欺骗，但是剃掉改主机后，路由器还是频繁死机。路由器是D-LINGK DSL-604+，局域网主机24台，不知道有没有问题啊？
问题解答：
网速登陆很慢，你们路由出口带宽占用率过高，内网应该有其他人在下载东西之类的，或上网人太多。
路由器或者交换机功率低.
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