IDC-网络数据中心，在中国，这一行简直太无奈。
信息产业部做出南电信北网通的那一刻起，就注定了中国网络的是垃圾。做一个门户站点，怎样才能使南北用户访问速度都达到令用户满意的程度，我认为是一个头等大事，也是目前不景气的IDC行业的一个绝大商机。
如何解决南电信北网通跨网访问web速度问题?看了一下新浪公司的web服务器在上海电信机房，在全国各地的访问速度不均，北方的用户比较慢，有时北京的adsl用户基本不能访问。
应该是电信，网通跨网的问题。
想解决这个问题，就看了一下新浪的web站点，以为他们用的是CDN，但这玩意很贵的。
nslookup了一下www.sina.com.cn，结果如下:
[code:1:ac3ab19ce9]> www.sina.com.cn
Server: ns.fhnet.cn.net
Address: 202.99.8.1
Non-authoritative answer:
Name: libra.sina.com.cn
Addresses: 61.135.152.71, 61.135.152.72, 61.135.152.73, 61.135.152.74
61.135.152.75, 61.135.152.76, 61.135.152.77, 61.135.152.78, 61.135.152.79
61.135.152.80, 61.135.152.81, 61.135.152.82, 61.135.153.175, 61.135.152.68
61.135.152.69, 61.135.152.70
Aliases: www.sina.com.cn, jupiter.sina.com.cn[/code:1:ac3ab19ce9]
随便看看其中一http://61.135.152.73/:得到:
[code:1:ac3ab19ce9]ERROR
The requested URL could not be retrieved
--------------------------------------------------------------------------------
While trying to retrieve the URL:http://61.135.152.73/
The following error was encountered:
Access Denied.
Access control configuration prevents your request from being allowed at this time. Please contact your service provider if you feel this is incorrect.
Your cache administrator is webmaster.
--------------------------------------------------------------------------------
Generated Thu, 17 Feb 2005 12:09:44 GMT by autoinstall.sina.com.cn (squid/2.5.STABLE5) [/code:1:ac3ab19ce9]
[code:1:ac3ab19ce9]> www.sina.com.cn
Server: ns.fhnet.cn.net
Address: 202.99.8.1
Non-authoritative answer:
Name: libra.sina.com.cn
Addresses: 61.135.152.71, 61.135.152.72, 61.135.152.73, 61.135.152.74
61.135.152.75, 61.135.152.76, 61.135.152.77, 61.135.152.78, 61.135.152.79
61.135.152.80, 61.135.152.81, 61.135.152.82, 61.135.153.175, 61.135.152.68
61.135.152.69, 61.135.152.70
Aliases: www.sina.com.cn, jupiter.sina.com.cn[/code:1:ac3ab19ce9]
随便看看其中一http://61.135.152.73/:得到:
[code:1:ac3ab19ce9]ERROR
The requested URL could not be retrieved
--------------------------------------------------------------------------------
While trying to retrieve the URL:http://61.135.152.73/
The following error was encountered:
Access Denied.
Access control configuration prevents your request from being allowed at this time. Please contact your service provider if you feel this is incorrect.
Your cache administrator is webmaster.
--------------------------------------------------------------------------------
Generated Thu, 17 Feb 2005 12:09:44 GMT by autoinstall.sina.com.cn (squid/2.5.STABLE5) [/code:1:ac3ab19ce9]
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