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2013年下半年 上午试卷 综合知识
第 71 题
知识点 route  
关键词 OS  
章/节 专业英语  
 
 
OSPF is a link-state routing protocol. It is designed to be run internal to a single (71) system. Each OSPF router maintains an identical (72) describing the autonomous system's topology. From this database, a routing table is calculated by constructing a shortest-path (73) . OSPF recalculates routes quickly in the face of topological changes, utilizing a minimum of routing (74) traffic. OSPF provides support for equal-cost multipath. An area routing capability is provided, enabling an additional level of routing protection and a reduction in routing protocol (75)
 
  A.  autonomous
 
  B.  network
 
  C.  computer
 
  D.  server




 
 
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知识点讲解
· route
 
        route
        route命令的功能是显示和修改本地的IP路由表。如果不带参数,则给出帮助信息。
        1)语法格式
        
        2)参数说明
        .-f:删除路由表中的网络路由、本地环路路由和组播路由。
        .-p:与add命令联合使用时,一条路由被添加到注册表中,当TCP/IP启动时,用于初始化路由;与print命令联合使用时,则显示持久路由列表;对于其他命令,这个参数被忽略。
        .Command:表示要运行的命令,可用的命令有add(添加路由)、change(修改已有的路由)、delete(删除路由)和print(打印路由)。
        .Destination:说明目标地址,可以是网络地址、主机地址或默认路由。
        .mask Netmask:说明目标地址对应的子网掩码。
        .Gateway:说明下一跃点的IP地址。
        .metric Metric:说明路由度量值,通常选择度量值最小的路由。
        .if Interface:说明接口的索引。



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