这道题是什么意思？

sinkevin

Refer to the exhibit. Assume that all of the router interfaces are operational and configured correctly. How
will router R2 be affected by the configuration of R1 that is shown in the exhibit?

A. Router R2 will not form a neighbor relationship with R1.
B. Router R2 will obtain a full routing table, including a default route, from R1.
C. R2 will obtain OSPF updates from R1, but will not obtain a default route from R1.
D. R2 will not have a route for the directly connected serial network, but all other directly connected
networks will be present, as well as the two Ethernet networks connected to R1.

OSPF不是增量更新的吗？为什么又说会收到整个路由表？

keyhappy

考点在于：default-information originate，说的是具有全完的路由表，而不是说传送完全的路由表

aleser

keyhappy 发表于 2012-7-29 16:26
考点在于：default-information originate，说的是具有全完的路由表，而不是说传送完全的路由表

aleser

aleser

sinkevin

明白了

aoklife

OSPF邻居建立好以后，是会同步LSDB的，然后再用SPF算法算出最好的路由，放进路由表。增量更新是指双方早已经完成了所有的交互过程，进入了FULL 状态。这之后拓扑有了变化，才进行触发更新，最开始是一种完全的学习 。