第 14 章 Networking

简介:

14.1. ping

-f: 发送洪水请求,每个请求打印一个点,每个响应删除一个点.如果网络存在丢包,那么会呈现出一长串不断增加的点.

-n: 选项,加上之后可以阻止ping程序去进行反向dns查询
    当每次ping完得到响应之后,ping程序会尝试一次反向dns查询(reverse dns lookup)来获取“64 bytes from”后面的域名,如果查询速度很慢的话,就会给人似乎延迟很大的感觉,其实这也是ping感觉慢,但是每次ping的响应时间却并不慢的原因.
		




原文出处:Netkiller 系列 手札
本文作者:陈景峯
转载请与作者联系,同时请务必标明文章原始出处和作者信息及本声明。

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