环境:R2 R4 两台路由器,R2的ROUTERID是2.2.2.2 R4的是4.4.4.4
首先让2台路由器启用OSPF并使得2.2.2.2成为DR.然后,重新启动R2,再R4上调试,其间R1 R3路由器未关闭.
*Mar 1 00:03:19.047: OSPF: Send hello to 224.0.0.5 area 0 on Serial1 from 10.1.3.4
*Mar 1 00:03:19.051: OSPF: Send hello to 224.0.0.5 area 0 on Ethernet0 from 10.1.2.4
r4-2501#
*Mar 1 00:03:24.159: OSPF: Rcv pkt from 10.1.1.3, Ethernet0, area 0.0.0.0 : src not on the same network
这些报源地址不在同一网络的消息,可以忽略,这是因为我将路由器的所有以太口均插在1924交换机上,由于是多播,所以才会产生这样的提示.
r4-2501#
*Mar 1 00:03:27.247: OSPF: Rcv pkt from 10.1.1.1, Ethernet0, area 0.0.0.0 : src not on the same network
*Mar 1 00:03:27.527: OSPF: Rcv pkt from 10.1.1.3, Ethernet0, area 0.0.0.0 : src not on the same network
r4-2501#
*Mar 1 00:03:28.951: OSPF: Rcv pkt from 10.1.1.1, Ethernet0, area 0.0.0.0 : src not on the same network
*Mar 1 00:03:29.051: OSPF: Send hello to 224.0.0.5 area 0 on Serial1 from 10.1.3.4
*Mar 1 00:03:29.055: OSPF: Send hello to 224.0.0.5 area 0 on Ethernet0 from 10.1.2.4
*Mar 1 00:03:29.751: OSPF: Rcv pkt from 10.1.1.3, Ethernet0, area 0.0.0.0 : src not on the same network
r4-2501#
*Mar 1 00:03:31.011: OSPF: Rcv hello from 3.3.3.3 area 0 from Serial1 10.1.3.3
*Mar 1 00:03:31.015: OSPF: End of hello processing
r4-2501#
*Mar 1 00:03:33.967: OSPF: Rcv pkt from 10.1.1.1, Ethernet0, area 0.0.0.0 : src not on the same network
r4-2501#
*Mar 1 00:03:36.471: OSPF: Rcv pkt from 10.1.1.3, Ethernet0, area 0.0.0.0 : src not on the same network
r4-2501#
*Mar 1 00:03:37.527: OSPF: Rcv pkt from 10.1.1.3, Ethernet0, area 0.0.0.0 : src not on the same network
r4-2501#
*Mar 1 00:03:38.951: OSPF: Rcv pkt from 10.1.1.1, Ethernet0, area 0.0.0.0 : src not on the same network
*Mar 1 00:03:39.055: OSPF: Send hello to 224.0.0.5 area 0 on Serial1 from 10.1.3.4
*Mar 1 00:03:39.059: OSPF: Send hello to 224.0.0.5 area 0 on Ethernet0 from 10.1.2.4
r4-2501#
*Mar 1 00:03:41.011: OSPF: Rcv hello from 3.3.3.3 area 0 from Serial1 10.1.3.3
*Mar 1 00:03:41.015: OSPF: End of hello processing
r4-2501#
*Mar 1 00:03:47.527: OSPF: Rcv pkt from 10.1.1.3, Ethernet0, area 0.0.0.0 : src not on the same network
r4-2501#
*Mar 1 00:03:48.951: OSPF: Rcv pkt from 10.1.1.1, Ethernet0, area 0.0.0.0 : src not on the same network
*Mar 1 00:03:49.059: OSPF: Send hello to 224.0.0.5 area 0 on Serial1 from 10.1.3.4
*Mar 1 00:03:49.063: OSPF: Send hello to 224.0.0.5 area 0 on Ethernet0 from 10.1.2.4
r4-2501#
*Mar 1 00:03:51.011: OSPF: Rcv hello from 3.3.3.3 area 0 from Serial1 10.1.3.3
*Mar 1 00:03:51.015: OSPF: End of hello processing
r4-2501#
*Mar 1 00:03:57.527: OSPF: Rcv pkt from 10.1.1.3, Ethernet0, area 0.0.0.0 : src not on the same network
r4-2501#
*Mar 1 00:03:58.951: OSPF: Rcv pkt from 10.1.1.1, Ethernet0, area 0.0.0.0 : src not on the same network
*Mar 1 00:03:59.063: OSPF: Send hello to 224.0.0.5 area 0 on Serial1 from 10.1.3.4
*Mar 1 00:03:59.067: OSPF: Send hello to 224.0.0.5 area 0 on Ethernet0 from 10.1.2.4
r4-2501#
*Mar 1 00:04:01.011: OSPF: Rcv hello from 3.3.3.3 area 0 from Serial1 10.1.3.3
*Mar 1 00:04:01.015: OSPF: End of hello processing
*Mar 1 00:04:01.631: OSPF: 2.2.2.2 address 10.1.2.2 on Ethernet0 is dead
*Mar 1 00:04:01.635: %OSPF-5-ADJCHG: Process 1, Nbr 2.2.2.2 on Ethernet0 from FULL to DOWN, Neighbor Down: Dead timer expired
路由器检测到R2的10.1.2.2口down掉了,注意从开始时间到这条提示时间的出现 大约是40秒,而在广播型网络上,死亡间隔默认就是40秒.
r4-2501#
*Mar 1 00:04:01.639: OSPF: Neighbor change Event on interface Ethernet0
*Mar 1 00:04:01.639: OSPF: DR/BDR election on Ethernet0
*Mar 1 00:04:01.643: OSPF: Elect BDR 4.4.4.4
*Mar 1 00:04:01.643: OSPF: Elect DR 4.4.4.4
*Mar 1 00:04:01.647: OSPF: Elect BDR 0.0.0.0
*Mar 1 00:04:01.647: OSPF: Elect DR 4.4.4.4
*Mar 1 00:04:01.651: DR: 4.4.4.4 (Id) BDR: none
*Mar 1 00:04:01.655: OSPF: Remember old DR 2.2.2.2 (id)
检测到邻居状态发生改变后,路由器在这个网络上重新选举DR/BDR,路由器选举4.4.4.4为DR,因为优先级是默认的,所以路由器取最大RID.网络上由于只存在2台路由器,所以BDR落空.
*Mar 1 00:04:02.159: OSPF: Rcv pkt from 10.1.1.3, Ethernet0, area 0.0.0.0 : src not on the same network
r4-2501#
*Mar 1 00:04:04.663: OSPF: Rcv pkt from 10.1.1.1, Ethernet0, area 0.0.0.0 : src not on the same network
r4-2501#
*Mar 1 00:04:06.355: OSPF: Rcv pkt from 10.1.1.1, Ethernet0, area 0.0.0.0 : src not on the same network
r4-2501#
*Mar 1 00:04:07.527: OSPF: Rcv pkt from 10.1.1.3, Ethernet0, area 0.0.0.0 : src not on the same network
r4-2501#
*Mar 1 00:04:08.859: OSPF: Rcv pkt from 10.1.1.3, Ethernet0, area 0.0.0.0 : src not on the same network
*Mar 1 00:04:08.951: OSPF: Rcv pkt from 10.1.1.1, Ethernet0, area 0.0.0.0 : src not on the same network
*Mar 1 00:04:09.067: OSPF: Send hello to 224.0.0.5 area 0 on Serial1 from 10.1.3.4
*Mar 1 00:04:09.071: OSPF: Send hello to 224.0.0.5 area 0 on Ethernet0 from 10.1.2.4
r4-2501#
*Mar 1 00:04:11.011: OSPF: Rcv hello from 3.3.3.3 area 0 from Serial1 10.1.3.3
*Mar 1 00:04:11.015: OSPF: End of hello processing
r4-2501#
*Mar 1 00:04:17.527: OSPF: Rcv pkt from 10.1.1.3, Ethernet0, area 0.0.0.0 : src not on the same network
r4-2501#
*Mar 1 00:04:18.951: OSPF: Rcv pkt from 10.1.1.1, Ethernet0, area 0.0.0.0 : src not on the same network
*Mar 1 00:04:19.135: OSPF: Send hello to 224.0.0.5 area 0 on Serial1 from 10.1.3.4
*Mar 1 00:04:19.139: OSPF: Send hello to 224.0.0.5 area 0 on Ethernet0 from 10.1.2.4
r4-2501#
*Mar 1 00:04:21.011: OSPF: Rcv hello from 3.3.3.3 area 0 from Serial1 10.1.3.3
*Mar 1 00:04:21.015: OSPF: End of hello processing
r4-2501#
*Mar 1 00:04:22.015: OSPF: Rcv pkt from 10.1.1.1, Ethernet0, area 0.0.0.0 : src not on the same network
r4-2501#
*Mar 1 00:04:24.519: OSPF: Rcv pkt from 10.1.1.3, Ethernet0, area 0.0.0.0 : src not on the same network
r4-2501#
*Mar 1 00:04:27.527: OSPF: Rcv pkt from 10.1.1.3, Ethernet0, area 0.0.0.0 : src not on the same network
r4-2501#
*Mar 1 00:04:28.951: OSPF: Rcv pkt from 10.1.1.1, Ethernet0, area 0.0.0.0 : src not on the same network
*Mar 1 00:04:29.139: OSPF: Send hello to 224.0.0.5 area 0 on Serial1 from 10.1.3.4
*Mar 1 00:04:29.143: OSPF: Send hello to 224.0.0.5 area 0 on Ethernet0 from 10.1.2.4
r4-2501#
*Mar 1 00:04:31.011: OSPF: Rcv hello from 3.3.3.3 area 0 from Serial1 10.1.3.3
*Mar 1 00:04:31.011: OSPF: End of hello processing
r4-2501#
*Mar 1 00:04:37.527: OSPF: Rcv pkt from 10.1.1.3, Ethernet0, area 0.0.0.0 : src not on the same network
r4-2501#
*Mar 1 00:04:38.955: OSPF: Rcv pkt from 10.1.1.1, Ethernet0, area 0.0.0.0 : src not on the same network
*Mar 1 00:04:39.143: OSPF: Send hello to 224.0.0.5 area 0 on Serial1 from 10.1.3.4
*Mar 1 00:04:39.147: OSPF: Send hello to 224.0.0.5 area 0 on Ethernet0 from 10.1.2.4
r4-2501#
*Mar 1 00:04:41.011: OSPF: Rcv hello from 3.3.3.3 area 0 from Serial1 10.1.3.3
*Mar 1 00:04:41.011: OSPF: End of hello processing
r4-2501#
*Mar
1 00:04:47.527: OSPF: Rcv pkt from 10.1.1.3, Ethernet0, area 0.0.0.0 : src not on the same network
r4-2501#
*Mar 1 00:04:48.955: OSPF: Rcv pkt from 10.1.1.1, Ethernet0, area 0.0.0.0 : src not on the same network
*Mar 1 00:04:49.147: OSPF: Send hello to 224.0.0.5 area 0 on Serial1 from 10.1.3.4
*Mar 1 00:04:49.151: OSPF: Send hello to 224.0.0.5 area 0 on Ethernet0 from 10.1.2.4
r4-2501#
*Mar 1 00:04:51.011: OSPF: Rcv hello from 3.3.3.3 area 0 from Serial1 10.1.3.3
*Mar 1 00:04:51.011: OSPF: End of hello processing
r4-2501#
*Mar 1 00:04:57.527: OSPF: Rcv pkt from 10.1.1.3, Ethernet0, area 0.0.0.0 : src not on the same network
r4-2501#
*Mar 1 00:04:58.955: OSPF: Rcv pkt from 10.1.1.1, Ethernet0, area 0.0.0.0 : src not on the same network
*Mar 1 00:04:59.151: OSPF: Send hello to 224.0.0.5 area 0 on Serial1 from 10.1.3.4
*Mar 1 00:04:59.155: OSPF: Send hello to 224.0.0.5 area 0 on Ethernet0 from 10.1.2.4
r4-2501#
*Mar 1 00:05:01.011: OSPF: Rcv hello from 3.3.3.3 area 0 from Serial1 10.1.3.3
*Mar 1 00:05:01.011: OSPF: End of hello processing
r4-2501#
*Mar 1 00:05:07.527: OSPF: Rcv pkt from 10.1.1.3, Ethernet0, area 0.0.0.0 : src not on the same network
r4-2501#
*Mar 1 00:05:08.955: OSPF: Rcv pkt from 10.1.1.1, Ethernet0, area 0.0.0.0 : src not on the same network
*Mar 1 00:05:09.155: OSPF: Send hello to 224.0.0.5 area 0 on Serial1 from 10.1.3.4
*Mar 1 00:05:09.159: OSPF: Send hello to 224.0.0.5 area 0 on Ethernet0 from 10.1.2.4
r4-2501#
*Mar 1 00:05:11.011: OSPF: Rcv hello from 3.3.3.3 area 0 from Serial1 10.1.3.3
*Mar 1 00:05:11.011: OSPF: End of hello processing
r4-2501#
*Mar 1 00:05:17.527: OSPF: Rcv pkt from 10.1.1.3, Ethernet0, area 0.0.0.0 : src not on the same network
r4-2501#
*Mar 1 00:05:18.955: OSPF: Rcv pkt from 10.1.1.1, Ethernet0, area 0.0.0.0 : src not on the same network
*Mar 1 00:05:19.159: OSPF: Send hello to 224.0.0.5 area 0 on Serial1 from 10.1.3.4
*Mar 1 00:05:19.163: OSPF: Send hello to 224.0.0.5 area 0 on Ethernet0 from 10.1.2.4
r4-2501#
*Mar 1 00:05:21.011: OSPF: Rcv hello from 3.3.3.3 area 0 from Serial1 10.1.3.3
*Mar 1 00:05:21.011: OSPF: End of hello processing
r4-2501#
*Mar 1 00:05:27.527: OSPF: Rcv pkt from 10.1.1.3, Ethernet0, area 0.0.0.0 : src not on the same network
r4-2501#
*Mar 1 00:05:28.955: OSPF: Rcv pkt from 10.1.1.1, Ethernet0, area 0.0.0.0 : src not on the same network
*Mar 1 00:05:29.163: OSPF: Send hello to 224.0.0.5 area 0 on Serial1 from 10.1.3.4
*Mar 1 00:05:29.167: OSPF: Send hello to 224.0.0.5 area 0 on Ethernet0 from 10.1.2.4
这个发出的HELLO消息中的应该包含有:DR是谁,BDR是谁,我的RID是什么,我的邻居为空.
r4-2501#
*Mar 1 00:05:30.175: OSPF: Rcv hello from 2.2.2.2 area 0 from Ethernet0 10.1.2.2
路由器接到了来自2.2.2.2的HELLO消息,R2会在这个消息里将之前R4放入到自己的邻居里同时将R4的状态置为INIT状态.这样,R4在接到这个HELLO后便看到了自己.
R4根据R2发来的HELLO消息,将R2放入到自己的邻居里.
(初始状态)
*Mar 1 00:05:30.179: OSPF: End of hello processing
*Mar 1 00:05:31.007: OSPF: Rcv hello from 3.3.3.3 area 0 from Serial1 10.1.3.3
*Mar 1 00:05:31.011: OSPF: End of hello processing
r4-2501#
*Mar 1 00:05:31.595: OSPF: Rcv pkt from 10.1.1.1, Ethernet0, area 0.0.0.0 : src not on the same network
*Mar 1 00:05:32.107: OSPF: Rcv pkt from 10.1.1.1, Ethernet0, area 0.0.0.0 : src not on the same network
r4-2501#
*Mar 1 00:05:34.103: OSPF: Rcv pkt from 10.1.1.3, Ethernet0, area 0.0.0.0 : src not on the same network
r4-2501#
*Mar 1 00:05:36.311: OSPF: Rcv pkt from 10.1.1.1, Ethernet0, area 0.0.0.0 : src not on the same network
r4-2501#
*Mar 1 00:05:37.331: OSPF: Rcv pkt from 10.1.1.1, Ethernet0, area 0.0.0.0 : src not on the same network
*Mar 1 00:05:37.527: OSPF: Rcv pkt from 10.1.1.3, Ethernet0, area 0.0.0.0 : src not on the same network
r4-2501#
*Mar 1 00:05:38.819: OSPF: Rcv pkt from 10.1.1.3, Ethernet0, area 0.0.0.0 : src not on the same network
*Mar 1 00:05:38.955: OSPF: Rcv pkt from 10.1.1.1, Ethernet0, area 0.0.0.0 : src not on the same network
*Mar 1 00:05:39.167: OSPF: Send hello to 224.0.0.5 area 0 on Serial1 from 10.1.3.4
*Mar 1 00:05:39.171: OSPF: Send hello to 224.0.0.5 area 0 on Ethernet0 from 10.1.2.4
R4再次发送HELLO 这次的HELLO里的邻居包含了R2.
r4-2501#
*Mar 1 00:05:40.175: OSPF: Rcv hello from 2.2.2.2 area 0 from Ethernet0 10.1.2.2
从R2
*Mar 1 00:05:40.179: OSPF: 2 Way Communication to 2.2.2.2 on Ethernet0, state 2WAY
双方彼此都在HELLO里看到了自己,双向通信状态建立完成
(2way状态)
*Mar 1 00:05:40.183: OSPF: Neighbor change Event on interface Ethernet0
*Mar 1 00:05:40.183: OSPF: DR/BDR election on Ethernet0
*Mar 1 00:05:40.187: OSPF: Elect BDR 2.2.2.2
*Mar 1 00:05:40.187: OSPF: Elect DR 4.4.4.4
*Mar 1 00:05:40.191: DR: 4.4.4.4 (Id) BDR: 2.2.2.2 (Id)
选举DR/BDR
*Mar 1 00:05:40.195: OSPF: Send DBD to 2.2.2.2 on Ethernet0 seq 0x12F8 opt 0x52 flag 0x7 len 32
发送初始DBD这个DBD是个空描述报文,不含真正的LSA摘要,设置初始位表明这是第一次交换,同时将主从位设置为主,申明自己是主路由器.
*Mar 1 00:05:40.199: OSPF: Neighbor change Event on interface Ethernet0
*Mar 1 00:05:40.203: OSPF: DR/BDR election on Ethernet0
r4-2501#
*Mar 1 00:05:40.203: OSPF: Elect BDR 2.2.2.2
*Mar 1 00:05:40.207: OSPF: Elect DR 4.4.4.4
*Mar 1 00:05:40.207: DR: 4.4.4.4 (Id) BDR: 2.2.2.2 (Id)
*Mar 1 00:05:40.211: OSPF: Neighbor change Event on interface Ethernet0
*Mar 1 00:05:40.215: OSPF: DR/BDR election on Ethernet0
*Mar 1 00:05:40.215: OSPF: Elect BDR 2.2.2.2
*Mar 1 00:05:40.219: OSPF: Elect DR 4.4.4.4
*Mar 1 00:05:40.219: DR: 4.4.4.4 (Id) BDR: 2.2.2.2 (Id)
*Mar 1 00:05:40.223: OSPF: End of hello processing
*Mar 1 00:05:41.007: OSPF: Rcv hello from 3.3.3.3 area 0 from Serial1 10.1.3.3
*Mar 1 00:05:41.011: OSPF: End of hello processing
斜体部分可能是因为R2路由器接口在启动之初未稳定,导致频繁选举吧
r4-2501#
*Mar 1 00:05:45.199: OSPF: Send DBD to 2.2.2.2 on Ethernet0 seq 0x12F8 opt 0x52 flag 0x7 len 32
*Mar 1 00:05:45.203: OSPF: Retransmitting DBD to 2.2.2.2 on Ethernet0 [1]
因为上面斜体的原因吧,这里R4没有在重传间隔内收到序列号为0x12F8的确认信息!于是重传该DBD.
r4-2501#
*Mar 1 00:05:47.343: OSPF: service_maxage: Trying to delete MAXAGE LSA
*Mar 1 00:05:47.527: OSPF: Rcv pkt from 10.1.1.3, Ethernet0, area 0.0.0.0 : src not on the same network
r4-2501#
*Mar 1 00:05:48.955: OSPF: Rcv pkt from 10.1.1.1, Ethernet0, area 0.0.0.0 : src not on the same network
*Mar 1 00:05:49.171: OSPF: Send hello to 224.0.0.5 area 0 on Serial1 from 10.1.3.4
*Mar 1 00:05:49.175: OSPF: Send hello to 224.0.0.5 area 0 on Ethernet0 from 10.1.2.4
r4-2501#
*Mar 1 00:05:50.175: OSPF: Rcv hello from 2.2.2.2 ar
ea 0 from Ethernet0 10.1.2.2
*Mar 1 00:05:50.179: OSPF: End of hello processing
*Mar 1 00:05:50.203: OSPF: Send DBD to 2.2.2.2 on Ethernet0 seq 0x12F8 opt 0x52 flag 0x7 len 32
*Mar 1 00:05:50.207: OSPF: Retransmitting DBD to 2.2.2.2 on Ethernet0 [2]
又重传一次.
*Mar 1 00:05:50.215: OSPF: Rcv DBD from 2.2.2.2 on Ethernet0 seq 0x12F8 opt 0x52 flag 0x2 len 132 mtu 1500 state EXSTART
*Mar 1 00:05:50.219: OSPF: NBR Negotiation Done. We are the MASTER
收到了R2的对该DBD的确认,同时设置主从位为从,状态是预启动状态.
(Exstart状态.)
*Mar 1 00:05:50.223: OSPF: Send DBD to 2.2.2.2 on Ethernet0 seq 0x12F9 opt 0x52 flag 0x3 len 132
*Mar 1 00:05:50.235: OSPF: Rcv DBD from 2.2.2.2 on Ethernet0 seq 0x12F9 opt 0x52 flag 0x0 len 32 mtu 1500 state EXCHANGE
*Mar 1 00:05:50.239: OSPF: Send DBD to 2.2.2.2 on Ethernet0 seq 0x12FA opt 0x52 flag 0x1 len 32
*Mar 1 00:05:50.255: OSPF: Rcv DBD from 2.2.2.2 on Ethernet0 seq 0x12FA opt 0x52 flag 0x0 len 32 mtu 1500 state EXCHANGE
交换DBD,同时在这个过程中,进行LSR/LSU工作,如果路由器在交换状态过程结束后,依然还有链路状态请求报文未结束.就进入LOADING加载状态,知道链路状态请求表里不再存在LSR.
(交换状态)(加载状态,本例未出现.)
*Mar 1 00:05:50.259: OSPF: Exchange Done with 2.
r4-2501#2.2.2 on Ethernet0
*Mar 1 00:05:50.263: OSPF: Synchronized with 2.2.2.2 on Ethernet0, state FULL
同步结束,进入完全邻接状态.
*Mar 1 00:05:50.267: %OSPF-5-ADJCHG: Process 1, Nbr 2.2.2.2 on Ethernet0 from LOADING to FULL, Loading Done
(FULL邻接邻接)
*Mar 1 00:05:50.779: OSPF: Rcv pkt from 10.1.1.1, Ethernet0, area 0.0.0.0 : src not on the same network
*Mar 1 00:05:50.783: OSPF: Rcv pkt from 10.1.1.3, Ethernet0, area 0.0.0.0 : src not on the same network
*Mar 1 00:05:50.819: OSPF: Rcv pkt from 10.1.1.3, Ethernet0, area 0.0.0.0 : src not on the same network
*Mar 1 00:05:50.831: OSPF: Rcv pkt from 10.1.1.1, Ethernet0, area 0.0.0.0 : src not on the same network
*Mar 1 00:05:51.051: OSPF: Rcv hello from 3.3.3.3 area 0 from Serial1 10.1.3.3
*Mar 1 00:05:51.055: OSPF: End of hello processing
r4-2501#
*Mar 1 00:05:53.283: OSPF: Rcv pkt from 10.1.1.3, Ethernet0, area 0.0.0.0 : src not on the same network
*Mar 1 00:05:53.335: OSPF: Rcv pkt from 10.1.1.1, Ethernet0, area 0.0.0.0 : src not on the same network
r4-2501#un all
*Mar 1 00:05:57.527: OSPF: Rcv pkt from 10.1.1.3, Ethernet0, area 0.0.0.0 : src not on the same network
r4-2501#un all
*Mar 1 00:05:58.955: OSPF: Rcv pkt from 10.1.1.1, Ethernet0, area 0.0.0.0 : src not on the same network
*Mar 1 00:05:59.175: OSPF: Send hello to 224.0.0.5 area 0 on Serial1 from 10.1.3.4
*Mar 1 00:05:59.179: OSPF: Send hello to 224.0.0.5 area 0 on Ethernet0 from 10.1.2.4
r4-2501#un all
*Mar 1 00:06:00.175: OSPF: Rcv hello from 2.2.2.2 area 0 from Ethernet0 10.1.2.2
*Mar 1 00:06:00.179: OSPF: End of hello processing
*Mar 1 00:06:01.007: OSPF: Rcv hello from 3.3.3.3 area 0 from Serial1 10.1.3.3
*Mar 1 00:06:01.011: OSPF: End of hello processing
r4-2501#un all
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