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 本帖最后由 chirontan 于 2010-5-25 09:33 编辑  
 
先说一下拓扑结构 
modem——netgear FVL328路由器——傻瓜交换机——netgear WGR614V9无线路由器——无线客户端 
FVL328的网段在192.168.0.0/24是静态IP  WGR614V9的网段在1.1.1.0/224是动态IP 
再说明一下出现的问题 
经常无线用户无法正常上网,但是QQ是连接的就是不能上网,tracert也能正常跟踪,dns也可以ping通,nslookup可以解析域名的,就是打不开网页,用IP也不行,此时再把无线路由器断电一分钟再开就又好了,此问题长期困扰着我,一直未能解决 
以下是不能正常上网时无线客户端的命令执行情况202.96.209.133是电信dns 1.1.1.1是无线路由器的IP地址 
C:\Documents and Settings\Administrator>ping www.baidu.com 
Pinging www.a.shifen.com [119.75.217.56] with 32 bytes of data: 
Reply from 119.75.217.56: bytes=32 time=211ms TTL=54 
Reply from 119.75.217.56: bytes=32 time=123ms TTL=54 
Reply from 119.75.217.56: bytes=32 time=132ms TTL=54 
Reply from 119.75.217.56: bytes=32 time=123ms TTL=54 
Ping statistics for 119.75.217.56: 
    Packets: Sent = 4, Received = 4, Lost = 0 (0% loss), 
Approximate round trip times in milli-seconds: 
    Minimum = 123ms, Maximum = 211ms, Average = 147ms 
C:\Documents and Settings\Administrator>telnet baidu.com 80 
Connecting To baidu.com...Could not open connection to the host, on port 80: Con 
nect failed 
C:\Documents and Settings\Administrator>tracert baidu.com 
Tracing route to baidu.com [61.135.163.94] 
over a maximum of 30 hops: 
  1     2 ms    <1 ms    <1 ms  1.1.1.1 
  2    21 ms    20 ms    28 ms  124.74.7.150 
  3    40 ms    46 ms    72 ms  124.74.7.149 
  4    13 ms    14 ms    12 ms  124.74.211.189 
  5    15 ms    13 ms   121 ms  61.152.86.50 
  6     *        *        *     Request timed out. 
  7     *      350 ms     *     219.158.32.1 
  8     *        *      197 ms  219.158.13.61 
  9     *        *        *     Request timed out. 
10     *        *        *     Request timed out. 
11     *      288 ms   327 ms  202.106.43.66 
12     *      212 ms     *     61.135.163.94 
13     *        *        *     Request timed out. 
14   215 ms   210 ms   209 ms  61.135.163.94 
Trace complete. 
C:\Documents and Settings\Administrator>nslookup www.baidu.com 
*** Can't find server name for address 1.1.1.1: Non-existent domain 
*** Default servers are not available 
Server:  UnKnown 
Address:  1.1.1.1 
Non-authoritative answer: 
Name:    www.a.shifen.com 
Addresses:  119.75.218.45, 119.75.217.56 
Aliases:  www.baidu.com 
 
C:\Documents and Settings\Administrator>telnet  119.75.218.45 80 
Connecting To 119.75.218.45...Could not open connection to the host, on port 80: 
Connect failed 
C:\Documents and Settings\Administrator>ping 119.75.218.45 
Pinging 119.75.218.45 with 32 bytes of data: 
Reply from 119.75.218.45: bytes=32 time=132ms TTL=54 
Reply from 119.75.218.45: bytes=32 time=131ms TTL=54 
Reply from 119.75.218.45: bytes=32 time=125ms TTL=54 
Reply from 119.75.218.45: bytes=32 time=128ms TTL=54 
Ping statistics for 119.75.218.45: 
    Packets: Sent = 4, Received = 4, Lost = 0 (0% loss), 
Approximate round trip times in milli-seconds: 
    Minimum = 125ms, Maximum = 132ms, Average = 129ms 
 
路由器下连接的四五台无线客户端都是一样现象,信号强度“强”,路由器的电源马上拔掉再马上插好故障依旧,一定要等一分后以后再插电才正常(或者拔掉WAN口的网线一分钟后再插回也就正常了,网线也已经换过N条了),路由器的我已经先后换过Dlink tplink netgear 三个牌子的都是同一种现象 
(补充一下,包是打不开网页的时候抓的,拔了网线,过了一分钟插上又好了,出问题的时候傻瓜交换机下网线接的几十台台式机都是正常上网的) 
() 
各位一起研究一下^__________________________________^ 
 
 
 
 
 
 
 
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