OSPF问题

locker · 发表于 2012-1-31 08:21:15

请问大家OSPF有没有水平分割？

距离矢量协议有水平分割，OSPF属于链路状态请问有没有？、

zzz802321 · 发表于 2012-1-31 11:35:16

所谓的SPF只是针对一个区域，区域与区域之间还是有水平分割的。

ufd_苜 · 发表于 2012-1-31 13:50:13

区域与区域之间交换的是LSA
使用这个LSA更新自身LSDB
用自身LSDB采用SPF算法生成无环树
没有水平分割的

linda.! · 发表于 2012-1-31 14:02:26

呃，应该说红头发的视频比较广泛。

tea · 发表于 2012-1-31 22:04:07

OSPF在处理Summary-LSAs的时候，是存在水平分割现象的。

--------------------------- 我是分割线 ---------------------------------
Summary-LSAs
  To determine which routes to advertise into an attached Area
         A, each routing table entry is processed as follows.
         Remember that each routing table entry describes a set of
         equal-cost best paths to a particular destination:
         o Only Destination Types of network and AS boundary router
            are advertised in summary-LSAs.  If the routing table
            entry's Destination Type is area border router, examine
            the next routing table entry.
         o AS external routes are never advertised in summary-LSAs.
            If the routing table entry has Path-type of type 1
            external or type 2 external, examine the next routing
            table entry.

         o Else, if the area associated with this set of paths is
            the Area A itself, do not generate a summary-LSA for the
            route.[17]
         o Else, if the next hops associated with this set of paths
            belong to Area A itself, do not generate a summary-LSA
            for the route.[18] This is the logical equivalent of a
            Distance Vector protocol's split horizon logic.
      …………………………

kingair · 发表于 2012-2-1 11:37:15

OSFP是有水平分割的，因为OSPF算是只能在一个区域内有效，这样就要求所有需要要和area0相连接

lin0131 · 发表于 2012-2-2 11:45:20

tea 发表于 2012-1-31 22:04
OSPF在处理Summary-LSAs的时候，是存在水平分割现象的。

--------------------------- 我是分割线 ----- ...

耿叔威武，学习下

博远科技骗子e · 发表于 2012-6-1 23:23:37

谢谢楼主！！！！

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