IT博客-cisco学习笔记-随笔分类-OSPFhttp://www.cnitblog.com/dyajun/category/7586.html      CCIE之路中。。。。其实我是一个天才，可惜天妒英才！o(∩_∩)o...哈哈zh-cnTue, 04 Oct 2011 17:29:52 GMTTue, 04 Oct 2011 17:29:52 GMT60ospf的基本原理与实现http://www.cnitblog.com/dyajun/archive/2008/10/03/49731.htmlcisco交流平台cisco交流平台Fri, 03 Oct 2008 08:05:00 GMThttp://www.cnitblog.com/dyajun/archive/2008/10/03/49731.htmlhttp://www.cnitblog.com/dyajun/comments/49731.htmlhttp://www.cnitblog.com/dyajun/archive/2008/10/03/49731.html#Feedback0http://www.cnitblog.com/dyajun/comments/commentRss/49731.htmlhttp://www.cnitblog.com/dyajun/services/trackbacks/49731.html  阅读全文

cisco交流平台 2008-10-03 16:05 发表评论
]]>OSPF 特殊区域、虚链路 、区域认证 综合实验http://www.cnitblog.com/dyajun/archive/2008/09/23/49447.htmlcisco交流平台cisco交流平台Tue, 23 Sep 2008 03:16:00 GMThttp://www.cnitblog.com/dyajun/archive/2008/09/23/49447.htmlhttp://www.cnitblog.com/dyajun/comments/49447.htmlhttp://www.cnitblog.com/dyajun/archive/2008/09/23/49447.html#Feedback1http://www.cnitblog.com/dyajun/comments/commentRss/49447.htmlhttp://www.cnitblog.com/dyajun/services/trackbacks/49447.htmlR1(config)#router os 1
R1(config-router)#area 0 authentication （第一步是启动认证）
R1(config-router)#int s1/2
R1(config-if)#ip os authentication-key ccxx （第二步在接口下配置认证）
要配置区域认证需将一个区域内的所有路由器都配置认证，这里配置的是area 0的区域认证，所以R1 R2 R4都需配置认证

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cisco交流平台 2008-09-23 11:16 发表评论
]]>NBMA上运行OSPFhttp://www.cnitblog.com/dyajun/archive/2008/09/19/49222.htmlcisco交流平台cisco交流平台Thu, 18 Sep 2008 20:48:00 GMThttp://www.cnitblog.com/dyajun/archive/2008/09/19/49222.htmlhttp://www.cnitblog.com/dyajun/comments/49222.htmlhttp://www.cnitblog.com/dyajun/archive/2008/09/19/49222.html#Feedback0http://www.cnitblog.com/dyajun/comments/commentRss/49222.htmlhttp://www.cnitblog.com/dyajun/services/trackbacks/49222.html阅读全文

cisco交流平台 2008-09-19 04:48 发表评论
]]>什么是NBMA网络？http://www.cnitblog.com/dyajun/archive/2008/09/19/49221.htmlcisco交流平台cisco交流平台Thu, 18 Sep 2008 19:53:00 GMThttp://www.cnitblog.com/dyajun/archive/2008/09/19/49221.htmlhttp://www.cnitblog.com/dyajun/comments/49221.htmlhttp://www.cnitblog.com/dyajun/archive/2008/09/19/49221.html#Feedback0http://www.cnitblog.com/dyajun/comments/commentRss/49221.htmlhttp://www.cnitblog.com/dyajun/services/trackbacks/49221.html阅读全文

cisco交流平台 2008-09-19 03:53 发表评论
]]>OSPF中邻居建立与邻接的形成过程分析http://www.cnitblog.com/dyajun/archive/2008/09/12/49048.htmlcisco交流平台cisco交流平台Fri, 12 Sep 2008 10:30:00 GMThttp://www.cnitblog.com/dyajun/archive/2008/09/12/49048.htmlhttp://www.cnitblog.com/dyajun/comments/49048.htmlhttp://www.cnitblog.com/dyajun/archive/2008/09/12/49048.html#Feedback2http://www.cnitblog.com/dyajun/comments/commentRss/49048.htmlhttp://www.cnitblog.com/dyajun/services/trackbacks/49048.htmlThe various states in which a neighbor can be are discussed below.
1. Down - the initial state of a neighbor conversation.
2. Attempt - indicates that an attempt should be made to contact the neighbor.
3. Init - hello packet has been received from the neighbor.
4. 2-Way - communication between two routers is bi-directional.
5. ExStart - first step to creating an adjacency between the two neighboring routers.
6. Exchange - the router is sending data description packets to the neighbor.
7. Loading - Link state request packets are sent to the neighbor.
8. Full - the neighboring routers are fully adjacent.

cisco交流平台 2008-09-12 18:30 发表评论
]]>OSPF协议概述http://www.cnitblog.com/dyajun/archive/2008/09/12/49047.htmlcisco交流平台cisco交流平台Fri, 12 Sep 2008 10:21:00 GMThttp://www.cnitblog.com/dyajun/archive/2008/09/12/49047.htmlhttp://www.cnitblog.com/dyajun/comments/49047.htmlhttp://www.cnitblog.com/dyajun/archive/2008/09/12/49047.html#Feedback2http://www.cnitblog.com/dyajun/comments/commentRss/49047.htmlhttp://www.cnitblog.com/dyajun/services/trackbacks/49047.htmlDR/BDR选举规则:
当选举DR/BDR 的时候要比较hello 包中的优先级(priority),优先级最高的为DR,次高的为BDR.默认优先级都为1.在优先级相同的情况下就比较RID,RID 等级最高的为DR,次高的为BDR.当你把优先级设置为0 以后,OSPF 路由器就不能成为DR/BDR,只能成为DROTHER
DR/BDR选举完成后,DRother只和DR/BDR形成邻接关系.所有的路由器将组播Hello包到地址224.0.0.5以便它们能跟踪其他邻居的信息,即DR将洪泛LSU到224.0.0.5;DRother只组播LSU到AllDRouter地址224.0.0.6,只有DR/BDR监听这个地址

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cisco交流平台 2008-09-12 18:21 发表评论
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