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电梯直达

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发表于 2010-10-20 15:32 |只看该作者 |倒序浏览

本帖最后由 5105100 于 2010-10-20 15:34 编辑

我在服务器端 nslookup 所有域名，全部是正常。

我在客户机 nslookup 部分相同域名网站有时正常，有时失败。

请问造成这种客户端失败的原因有那几种可能。

> www.sohu.com
Server:  UnKnown
Address:  173.230.147.201

DNS request timed out.
timeout was 2 seconds.
DNS request timed out.
timeout was 2 seconds.
*** Request to UnKnown timed-out

> www.sohu.com
Server:  UnKnown
Address:  173.230.147.201

DNS request timed out.
timeout was 2 seconds.
DNS request timed out.
timeout was 2 seconds.
*** Request to UnKnown timed-out

> www.sohu.com
Server:  UnKnown
Address:  173.230.147.201

Non-authoritative answer:
Name: pgcnctct07.a.sohu.com
Addresses:  61.135.179.184, 61.135.179.190, 61.135.133.37, 61.135.133.38
      61.135.133.88, 61.135.133.89, 61.135.179.155, 61.135.179.160
Aliases:  www.sohu.com, d7.a.sohu.com

备注：不能正常解析的全部是通过Bind转发的，转发配置如下

options {
         directory "/var/named";
auth-nxdomain no;
forward first;
forwarders
      {
      173.230.147.201;
};