3

因为我有一个新的 Cisco 路由器,所以在恢复或启动我的笔记本电脑后我无法浏览网页。我做了一些调试,似乎我有一个网络连接,但是 DNS 有一段时间失败了(比如说;超过 50 秒)。

您可以在下面的pingnslookup输出中看到我的意思。我用谷歌域名服务器和我的互联网提供商的 DNS 服务器尝试了这个,但两者都有相同的结果。一切都启动了一段时间后,一切正常。(意思是,互联网可以正常工作,并且所有尝试过的名称服务器都回复得非常快)。

如果有人知道如何解决这个问题会很好。

额外信息:windows7,宽带连接,wifi 和有线连接都有这个问题。

Microsoft Windows [Version 6.1.7601]
Copyright (c) 2009 Microsoft Corporation.  All rights reserved.

C:\Windows\system32>ping 8.8.8.8

Pinging 8.8.8.8 with 32 bytes of data:
Reply from 8.8.8.8: bytes=32 time=18ms TTL=54
Reply from 8.8.8.8: bytes=32 time=21ms TTL=54
Reply from 8.8.8.8: bytes=32 time=16ms TTL=54
Reply from 8.8.8.8: bytes=32 time=18ms TTL=54

Ping statistics for 8.8.8.8:
    Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
    Minimum = 16ms, Maximum = 21ms, Average = 18ms

C:\Windows\system32>nslookup
DNS request timed out.
    timeout was 2 seconds.
Default Server:  UnKnown
Address:  8.8.8.8

> www.google.com
Server:  UnKnown
Address:  8.8.8.8

DNS request timed out.
    timeout was 2 seconds.
DNS request timed out.
    timeout was 2 seconds.
DNS request timed out.
    timeout was 2 seconds.
DNS request timed out.
    timeout was 2 seconds.
*** Request to UnKnown timed-out
> www.google.com
Server:  UnKnown
Address:  8.8.8.8

DNS request timed out.
    timeout was 2 seconds.
DNS request timed out.
    timeout was 2 seconds.
DNS request timed out.
    timeout was 2 seconds.
DNS request timed out.
    timeout was 2 seconds.
*** Request to UnKnown timed-out
> www.google.com
Server:  UnKnown
Address:  8.8.8.8

DNS request timed out.
    timeout was 2 seconds.
DNS request timed out.
    timeout was 2 seconds.
DNS request timed out.
    timeout was 2 seconds.
DNS request timed out.
    timeout was 2 seconds.
*** Request to UnKnown timed-out
> www.google.com
Server:  UnKnown
Address:  8.8.8.8

--------8<------after a while---------

C:\Windows\system32>ping 8.8.8.8

Pinging 8.8.8.8 with 32 bytes of data:
Reply from 8.8.8.8: bytes=32 time=18ms TTL=54
Reply from 8.8.8.8: bytes=32 time=21ms TTL=54
Reply from 8.8.8.8: bytes=32 time=16ms TTL=54
Reply from 8.8.8.8: bytes=32 time=18ms TTL=54

Ping statistics for 8.8.8.8:
    Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
    Minimum = 16ms, Maximum = 21ms, Average = 18ms

C:\Windows\system32>nslookup
DNS request timed out.
    timeout was 2 seconds.
Default Server:  [8.8.8.8]
Address:  8.8.8.8

> www.google.com
Server:  [8.8.8.8]
Address:  8.8.8.8

DNS request timed out.
    timeout was 2 seconds.
DNS request timed out.
    timeout was 2 seconds.
Non-authoritative answer:
Name:    www.l.google.com
Addresses:  173.194.66.99
          173.194.66.106
          173.194.66.147
          173.194.66.103
          173.194.66.104
          173.194.66.105
Aliases:  www.google.com
4

2 回答 2

1

有同样的问题。这对我有用,在 Cisco EPC3925(有线 ISP)后面。

在 Windows 7/8 中打开网络和共享中心 > 管理适配器设置。您可能需要按住 ALT 按钮才能看到 Advanced > Advanced Settings Options 。在适配器和绑定中,检查绑定是否在 TCP/IPv6 之前列出 TCP / IPv4

于 2013-07-20T08:37:06.143 回答
0

节日。多年来,我在 Cisco EPC-3925 上遇到过类似的问题,有一次我什至尝试过 IPv4 和 6 设置(无济于事)。我发现我让路由器运行的时间越长,ping 越长,我的互联网连接越慢。

这是您可以尝试的测试:重新启动 3925 并从 speedtest.net 获取结果(重新启动后我的速度接近 120Mbps)。在不重启路由器的情况下,12 小时后再次尝试 speedtest,然后 24 小时、48、72 等(您可以更频繁地测试,但结果不会那么好)。记录你所有的速度测试值,看看你的路由器是否随着时间的推移而变慢。有传言称网络地址转换表 (NAT) 不知何故损坏了,但我发现解决该问题的任何建议也都失败了(对我而言)。

我尝试了各种方法来修复它,最后我在墙上使用了一个电源插座定时器,路由器插入其中。计时器每天凌晨 3:30 重新启动路由器 - 这为我解决了问题。它很粗糙,但很有效。不能解决根本问题,而是回避。

同样的事情可能对您有用...通过强制您的 PC 进入睡眠状态进行测试,将其唤醒,然后运行上述测试以查看会发生什么。

只是一个想法,但可能对你有用。

当然可能还有其他问题...例如,您是否使用无线连接到路由器 - WIFI 频道是否有任何干扰等。

问候,格雷格。

于 2014-01-02T21:44:54.110 回答