路由器也发送链路状态请求数据包,请求从邻居的更加最近的Link State Advertisement (LSA)。 虽然OSPF 邻居在正常的 OSPF 邻接关系构建过程中会转入 exstart/exchange 状态,但是 OSPF 邻居停滞在此状态是不正常的。 以下为 OSPF 邻居停滞在此状态的最常见原因。 有关不同 OSPF 状态的详细信息,请参阅OSPF 邻居状态。
OSPF states for adjacency formation there are Down, Init, 2-way, Exstart, Exchange, Loading and Full. There can be a number of reasons why the Open Shortest Path First (OSPF) neighbors are stuck in Exstart/Exchange state. This document focuses on an MTU mismatch between OSPF neighbors that ...
OSPF建立邻居关系过程(7个状态) down state 接口未开启 init state R1发送hello包到组播地址,R2比较初始化条件 two-way state hello包中neighbor IP 与自己IP地址相同,则改为two-way state 邻居状态 exstart state 开始交换状态,交换空的DBD消息,选举主从关系 exchange state 交换DBD包,包含了LSA的包头信息 loading...
If the suggestion with temporarily disabling the NAT does not resolve the problem, here is another suggestion: While the neighbors are stuck in the ExStart/Exchange state, would it be possible to configure a SPAN session both on the Cat6K Gi3/1 and ASR Gi0/0/2, and record the traffic b...
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解答一 举报 exstart 是在DR/BDR选举完成后的状态.DR/BDR是根据HELLO报文中的优先级来确定的,优先级高选为DR,次高的为BDR.exstart 下,路由器交互DD报文,并根据dd报文中的序号协商主从关系,这里的master不是DR,而是主动发起dd报文交互的那台路由器. 解析看不懂?免费查看同类题视频解析查看解答 更多答案(1) ...
adjacency must continue past this state. If it does not, there is a problem with the DBD exchange, such as a maximum transmission unit (MTU) mismatch or the receipt of an unexpected DBD sequence number. For more information, refer toWhy Are OSPF Neighbors Stuck in Exstart/Exchange State?
exstart 是在DR/BDR选举完成后的状态。DR/BDR是根据HELLO报文中的优先级来确定的,优先级高选为DR,次高的为BDR。exstart 下,路由器交互DD报文,并根据dd报文中的序号协商主从关系,这里的master不是DR,而是主动发起dd报文交互的那台路由器。交换...
OSPF邻居状态变化顺序从低到高:down->init->2-way->exstart->exchange->loading->full。 可能原因 原因1:Adjacency holdTimer expired(邻接定时器超时) 原因2:Physical interface change(物理接口变化) 原因3:Protocol reason(协议原因) 原因4:BFD session state change(BFD会话断开) 原因5:Configuration chang...
NbrState 邻居状态,当邻居状态为Full时,此Trap为业务恢复Trap,当邻居为其他状态时,此Trap为故障告警Trap。 1: Down 2: Attempt 3: Init 4: 2-Way 5: ExStart 6: Exchange 7: Loading 8: Full IfName 接口名称。 NbrStateChangeReason 邻居状态变化的原因。 SubReason 详细原因。 VB信息参数 VB...