掩码

/24表示掩码是 255.255.255.0                                     
/25表示掩码是 255.255.255.128                                   
/17表进掩码是 255.255.128.0                                   
/16表进掩码是 255.255.0.0

posted @ 2012-03-27 22:15  greencolor  阅读(355)  评论(0)    收藏  举报