为什么我们需要主从关系来交换OSPF中的DBD？

Question

我对OSPF中的主从关系感到困惑？为什么ospf需要主从关系的选择来交换DBD？

Answer 1

这在RFC 2328-OSPF版本2，第10.8节中有解释

Master Database Description packets are sent when either a) the slave acknowledges the previous Database Description packet by echoing the DD sequence number or b) RxmtInterval seconds elapse without an acknowledgment, in which case the previous Database Description packet is retransmitted. Slave Database Description packets are sent only in response to Database Description packets received from the master. If the Database Description packet received from the master is new, a new Database Description packet is sent, otherwise the previous Database Description packet is resent.

简而言之，在任何给定的时间，只有一个DBD序列号不能被确认。Master负责确保DBD序列号被正确确认。厨房里的两个厨师不工作..。一个人必须控制序列号(主人)，一个人必须承认(奴隶)。