论坛: 系统集成 标题: 网速为什么经常变慢? 复制本贴地址    
作者: 梦无痕 [mongwuheng]    论坛用户   登录
我公司的网络,经常会变得奇慢,网络拓扑是主干一台16口交换机,下面级联三台HUB(六口),还有四五台电脑直接连接到主干交换机。速度变慢时, 只要把其中一台连接了六台电脑的HUB重启后等一会就会快,但过了十来天又会变慢,ping深圳DNS(202.96.134.133)的time值达到了1000ms,局域网电脑根本上不网!很烦人的,真不知什么原因?请位哪位高手指点,请说明原因?


[此贴被 梦无痕(mongwuheng) 在 02月11日10时17分 编辑过]

地主 发表时间: 04-02-10 16:31

回复: 带脚镣跳舞 [tuzi]   版主   登录
速度变慢时, 只要把一台连接六台HUB的重启后等一会就会快,??
不是说 3个HUB 怎么又6台HUB了 什么东西连6台HUB呀
HUB连的是什么呀 
拓扑具体一点 症状描述详细一点

再加上自己的调试过程

[此贴被 带脚镣跳舞(tuzi) 在 02月10日16时41分 编辑过]

B1层 发表时间: 04-02-10 16:40

回复: koolboy [koolboy]   论坛用户   登录
我曾经也遇到过这样的事情。
当时那个公司是通过电信光纤接入的,同样也出现了你所说的问题。
你试试问问是不是电信那头的光纤的问题



B2层 发表时间: 04-02-10 20:46

回复: 梦无痕 [mongwuheng]   论坛用户   登录
不好意思,打错啦!应该是“只要把一台连接了六台电脑的HUB重启后等一会就会快”
最近几天更严重,重启这台HUB后,过几个小时,速度就变慢,Ping 202.96.134.133的timew值时常有1000多ms,时好时坏!真的好烦!!!!


B3层 发表时间: 04-02-11 10:21

回复: 追求一种客观 [group]   论坛用户   登录
是不是冲击波?

B4层 发表时间: 04-02-11 11:02

回复: 俊华 [permino]   论坛用户   登录
我觉得应该是有病毒,或者是有网卡有问题导致冲突域产生大量的冲突。如果没有这方面的问题,就考虑换个交换机试试。

[此贴被 俊华(permino) 在 02月11日11时40分 编辑过]

B5层 发表时间: 04-02-11 11:36

回复: 追月一族 [zyh2099]   论坛用户   登录
换个交换机吧,六个HUB这样也太影响了吧

B6层 发表时间: 04-02-11 21:12

回复: 回忆草 [wfjxx]      登录
简单把hub换成交换机就可以了呀

B7层 发表时间: 04-02-12 08:58

回复: 梦无痕 [mongwuheng]   论坛用户   登录
各位大哥呀!我敢肯定不是病毒的事,所有的电脑我都打了最新的补丁,都安装了正版最新杀毒软件,现在问题是没有规律,时好时坏,有时打开网页很慢时,我连续ping(202.96.134.133)几次就会好一会,久了时候可以好上半天,有时就是几分钟就会出现这种情况,如果是电脑多的话,有时就是两台电脑开着也会出现,但如果只一台电脑直接连接ADSL MODEM(我们伊泰克2018的,带路由功能)就不会,而且很快。以前只是偶尔出现这种现象,但最近才很频繁,我真的想不出是什么原因啦!我好歹也是一个搞网络几年的,而且通过了CCNA,真的弄不明白是怎么回事,看哪位大哥能指点迷津!!!!!

B8层 发表时间: 04-02-12 09:38

回复: 梦无痕 [mongwuheng]   论坛用户   登录
C:\>ping 202.96.134.133

Pinging 202.96.134.133 with 32 bytes of data:

Reply from 202.96.134.133: bytes=32 time=451ms TTL=250
Reply from 202.96.134.133: bytes=32 time=390ms TTL=250
Reply from 202.96.134.133: bytes=32 time=571ms TTL=250
Reply from 202.96.134.133: bytes=32 time=401ms TTL=250

Ping statistics for 202.96.134.133:
    Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
    Minimum = 390ms, Maximum =  571ms, Average =  453ms

C:\>ping 202.96.134.133

Pinging 202.96.134.133 with 32 bytes of data:

Reply from 202.96.134.133: bytes=32 time=351ms TTL=250
Reply from 202.96.134.133: bytes=32 time=260ms TTL=250
Reply from 202.96.134.133: bytes=32 time=260ms TTL=250
Reply from 202.96.134.133: bytes=32 time=510ms TTL=250

Ping statistics for 202.96.134.133:
    Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
    Minimum = 260ms, Maximum =  510ms, Average =  345ms

C:\>ping 202.96.134.133

Pinging 202.96.134.133 with 32 bytes of data:

Reply from 202.96.134.133: bytes=32 time=691ms TTL=250
Reply from 202.96.134.133: bytes=32 time=360ms TTL=250
Reply from 202.96.134.133: bytes=32 time=501ms TTL=250
Reply from 202.96.134.133: bytes=32 time=260ms TTL=250

Ping statistics for 202.96.134.133:
    Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
    Minimum = 260ms, Maximum =  691ms, Average =  453ms

C:\>ping 202.96.134.133

Pinging 202.96.134.133 with 32 bytes of data:

Request timed out.
Request timed out.
Request timed out.
Request timed out.

Ping statistics for 202.96.134.133:
    Packets: Sent = 4, Received = 0, Lost = 4 (100% loss),
Approximate round trip times in milli-seconds:
    Minimum = 0ms, Maximum =  0ms, Average =  0ms

C:\>ping 202.96.134.133

Pinging 202.96.134.133 with 32 bytes of data:

Request timed out.
Request timed out.
Request timed out.
Request timed out.

Ping statistics for 202.96.134.133:
    Packets: Sent = 4, Received = 0, Lost = 4 (100% loss),
Approximate round trip times in milli-seconds:
    Minimum = 0ms, Maximum =  0ms, Average =  0ms

C:\>ping 202.96.134.133

Pinging 202.96.134.133 with 32 bytes of data:

Request timed out.
Request timed out.
Request timed out.
Request timed out.

Ping statistics for 202.96.134.133:
    Packets: Sent = 4, Received = 0, Lost = 4 (100% loss),
Approximate round trip times in milli-seconds:
    Minimum = 0ms, Maximum =  0ms, Average =  0ms

C:\>ping 202.96.134.133

Pinging 202.96.134.133 with 32 bytes of data:

Request timed out.
Request timed out.
Request timed out.
Request timed out.

Ping statistics for 202.96.134.133:
    Packets: Sent = 4, Received = 0, Lost = 4 (100% loss),
Approximate round trip times in milli-seconds:
    Minimum = 0ms, Maximum =  0ms, Average =  0ms

C:\>ping 202.96.134.133

Pinging 202.96.134.133 with 32 bytes of data:

Request timed out.
Request timed out.
Request timed out.
Request timed out.

Ping statistics for 202.96.134.133:
    Packets: Sent = 4, Received = 0, Lost = 4 (100% loss),
Approximate round trip times in milli-seconds:
    Minimum = 0ms, Maximum =  0ms, Average =  0ms

C:\>ping 202.96.134.133

Pinging 202.96.134.133 with 32 bytes of data:

Request timed out.
Request timed out.
Request timed out.
Request timed out.

Ping statistics for 202.96.134.133:
    Packets: Sent = 4, Received = 0, Lost = 4 (100% loss),
Approximate round trip times in milli-seconds:
    Minimum = 0ms, Maximum =  0ms, Average =  0ms

C:\>ping 202.96.134.133

Pinging 202.96.134.133 with 32 bytes of data:

Request timed out.
Request timed out.
Request timed out.
Request timed out.

Ping statistics for 202.96.134.133:
    Packets: Sent = 4, Received = 0, Lost = 4 (100% loss),
Approximate round trip times in milli-seconds:
    Minimum = 0ms, Maximum =  0ms, Average =  0ms

C:\>ping 202.96.134.133

Pinging 202.96.134.133 with 32 bytes of data:

Request timed out.
Request timed out.
Request timed out.
Request timed out.

Ping statistics for 202.96.134.133:
    Packets: Sent = 4, Received = 0, Lost = 4 (100% loss),
Approximate round trip times in milli-seconds:
    Minimum = 0ms, Maximum =  0ms, Average =  0ms

C:\>ping 202.96.134.133

Pinging 202.96.134.133 with 32 bytes of data:

Request timed out.
Request timed out.
Request timed out.
Request timed out.

Ping statistics for 202.96.134.133:
    Packets: Sent = 4, Received = 0, Lost = 4 (100% loss),
Approximate round trip times in milli-seconds:
    Minimum = 0ms, Maximum =  0ms, Average =  0ms

C:\>ping 202.96.134.133

Pinging 202.96.134.133 with 32 bytes of data:

Request timed out.
Request timed out.
Request timed out.
Request timed out.

Ping statistics for 202.96.134.133:
    Packets: Sent = 4, Received = 0, Lost = 4 (100% loss),
Approximate round trip times in milli-seconds:
    Minimum = 0ms, Maximum =  0ms, Average =  0ms

C:\>ping 202.96.134.133

Pinging 202.96.134.133 with 32 bytes of data:

Request timed out.
Request timed out.
Request timed out.
Request timed out.

Ping statistics for 202.96.134.133:
    Packets: Sent = 4, Received = 0, Lost = 4 (100% loss),
Approximate round trip times in milli-seconds:
    Minimum = 0ms, Maximum =  0ms, Average =  0ms

C:\>ping 202.96.134.133

Pinging 202.96.134.133 with 32 bytes of data:

Request timed out.
Request timed out.
Request timed out.
Request timed out.

Ping statistics for 202.96.134.133:
    Packets: Sent = 4, Received = 0, Lost = 4 (100% loss),
Approximate round trip times in milli-seconds:
    Minimum = 0ms, Maximum =  0ms, Average =  0ms

C:\>ping 202.96.134.133

Pinging 202.96.134.133 with 32 bytes of data:

Request timed out.
Request timed out.
Request timed out.
Request timed out.

Ping statistics for 202.96.134.133:
    Packets: Sent = 4, Received = 0, Lost = 4 (100% loss),
Approximate round trip times in milli-seconds:
    Minimum = 0ms, Maximum =  0ms, Average =  0ms

C:\>ping 202.96.134.133

Pinging 202.96.134.133 with 32 bytes of data:

Request timed out.
Request timed out.
Request timed out.
Request timed out.

Ping statistics for 202.96.134.133:
    Packets: Sent = 4, Received = 0, Lost = 4 (100% loss),
Approximate round trip times in milli-seconds:
    Minimum = 0ms, Maximum =  0ms, Average =  0ms

C:\>ping 202.96.134.133

Pinging 202.96.134.133 with 32 bytes of data:

Request timed out.
Request timed out.
Request timed out.
Request timed out.

Ping statistics for 202.96.134.133:
    Packets: Sent = 4, Received = 0, Lost = 4 (100% loss),
Approximate round trip times in milli-seconds:
    Minimum = 0ms, Maximum =  0ms, Average =  0ms

C:\>ping 202.96.134.133

Pinging 202.96.134.133 with 32 bytes of data:

Request timed out.
Request timed out.
Request timed out.
Request timed out.

Ping statistics for 202.96.134.133:
    Packets: Sent = 4, Received = 0, Lost = 4 (100% loss),
Approximate round trip times in milli-seconds:
    Minimum = 0ms, Maximum =  0ms, Average =  0ms

C:\>ping 202.96.134.133

Pinging 202.96.134.133 with 32 bytes of data:

Request timed out.
Request timed out.
Request timed out.
Request timed out.

Ping statistics for 202.96.134.133:
    Packets: Sent = 4, Received = 0, Lost = 4 (100% loss),
Approximate round trip times in milli-seconds:
    Minimum = 0ms, Maximum =  0ms, Average =  0ms

C:\>ping 202.96.134.133

Pinging 202.96.134.133 with 32 bytes of data:

Reply from 202.96.134.133: bytes=32 time=90ms TTL=250
Reply from 202.96.134.133: bytes=32 time=170ms TTL=250
Reply from 202.96.134.133: bytes=32 time=160ms TTL=250
Reply from 202.96.134.133: bytes=32 time=100ms TTL=250

Ping statistics for 202.96.134.133:
    Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
    Minimum = 90ms, Maximum =  170ms, Average =  130ms

C:\>

B9层 发表时间: 04-02-12 09:41

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