监测清单11-2查看OSPF相关信息 R2#sh ip PRotocol Routing Protocol is "ospf 100" Invalid after 0 seconds, hold down 0, flushed after 0 Outgoing update filter list for all interfaces is Incoming update filter list for all interfaces is Routing for Networks: 192.168.1.2/32 192,168.1.5/32 Routing Infottuation Sources: Gateway Distance Last Update 192.168.1.1 110 00:09:26 192.168.1.6 110 00:09:26 Distance: (default is 110)
R2#sh ip ospf neighbor Neighbor ID Pri State Dead Time Address Interface 192.168.1.6 1 FULL/ - 00:00:34 192.168.1.6 Serial0 192.168.1.1 1 FULL/ - 00:00:36 192.168.1.1 Serial1
R2#sh ip ospf neighbor detail Neighbor In the area 0 via interface Serial0 Neighbor priority is 1,State is FULL,6 state changes DR is 0.0.0.0 BDR is 0.0.0.0 Options is 0x42 Dead timer-due in 00:00:38 Neighbor is up for 00:10:40 Index 2/2, retransmission queue length 0, number of retransmission 1 First 0x0(0/0x0(0) Next 0x0(0)/0x0(0) Last retransmission scan length is 1, maximum is 1 Last retransmission scan time is 0 msec, maximum is 0 msec
Neighbor 192.168.1.1,interface address 192.168.1.1 In the area 0 via interface Serial 1 Neighbor priority is 1,State is FULL, 6 state changes DR is 0.0.0.0 BDR is 0.0.0.0 Options is 0x42 Dead timer due in 00:00:39 Neighbor is up- for 00:10:50 Index 1/1, retransmission queue length 0, number of retransmission 1 First 0x0(0)/0x0(0) Next 0x0(0)/0x0(0) Last retransmission scan length is 1, maximum is 1 Last retransmission scan time is 0 msec, maximum is 0 msec
R2#sh ip ospf interface s0 Serial0 is up, line protocol is up Internet Address 192.168.1.5/30, Arca0 Proems ID 100, Router ID 192.168.1.5,Network Type POINT_TO_POINT,Cost:64 Transmit Delay is 1 sec. State POINT_TO_POINT, Timer ititervals configured Hello 10,1>ead 40, Wait 40, Retransmit 5 Hello due in 00:00:00 Index 2/2, flood queue length 0 Next 0x0(0)/0x0(0) Last flood scan length is 1, maximum is 1 Last flood scan time is 0 msec, maximum is 0 msec Neighbor Count is-: 1,Adjacent neighbor count is 1 Adjacent with neighbor 192.168.1.6 Suppress hello for 0 neighbor(s)
R2#sh ip ospf database OSPF Router with ID (192.168.1.5) (Process ID 100) Router Link States(Area 0) Link ID ADV Router Age Seq# Checksum Link count 192.168.1.1 192.168.1.1 832 0x80000005 0xF6B8 3 192.168.1.5 192.168,1.5 820 0x80000006 0xF6B8 4 192.168.1.6 192.168.1.6 806 0x80000005 0xF6B8 3 R2# Term_Server>1 [Resuming connection 1 to r1 ... ]
R1#sh ip ospf neighbor
Neighbor ID Pri State Dead Time Address Interface 192.168.1.5 1 FULL/- 00:00:36 192.168.1.2 Serial1 R1# Term_Server>3 [Resuming connection 3 to r3...]
R3#sh ip ospf neighbor
Neighbor ID Pri State Dead Time Address Interface 192.168.1.5 1 FULL/- 00:00:35 192.168.1.5 Serial0
R3#sh ip route ospf 172.16.0.0/24 is subnetted,2 subnets O 172.16.1.0[110/138]via 192.168.1.5,00:12:12,Serial0 192.168.1.0/30 is subnetted,2 subnets O 192.168.1.0[110/128]via 192.168.1.5,00:12:12,Serial0
R3#sh ip route 172.16.1.0 Routing entry for 172.16.1./24 Known via"ospf 100",distance 110,metric 138,type intra area Last update from 192.168.1.5 on Serial0,00:12:20 ago Routing Descriptor Blocks: * 192J68.1.5, from 192.168.1.1, 00:12:20 ago, via Serial0 Route metric is 138, traffic share count is 1
(1)在R2路由器上，使用show ip protocol命令，可以列出OSPF协议的主要配置信息。其中所路由的网络中列出的是接口地址"掩码为32位，这是和网络声明配置语句相对应的。 命令同时列出了2个路由信息源，它们是R1和R3路由器，相应的IP地址即为R1和R3的RouterID。 OSPF协议的缺省治理距离为110。 (2)show ip ospf neighbor命令列出了当前路由器的邻居，其中各项的含义如下: NeighborID:邻居路由器的ID号; Pri:即Priority，邻居路由器的优先级，缺省情况下是1; State:邻居路由器的状态，"Full"表明形成的完全的邻接关系; Dead Time:为终结时间，假如在此计数器计数到0之前，没有接收到由对应的邻居路由器发来的Hello包，则邻接关系将被清除; Address:是邻居路由器的IP地址; Interface:是与邻居路由器相连的本路由器的接口。 (3)使用show ip ospf neghbor detail命令列出了与R2路由器相邻的路由器的具体信息。 (4)show ip ospf interface命令可以列出相应接口的OSPF信息。以R2路由器S0接口为例，列出了以下重要信息: OSPF进程ID为100; RouterID为192.168.1.5; OSPF网络类型为点到点; 此链路的Cost值为64; Hello计时器为10秒; 终结计时器为40秒; 等待计时器为40秒; 与一个邻居路由器形成邻接关系，它的ID是192.168.1.6，即R3路由器。 (5)查看OSPF数据库的命令是show ip ospf database，此命令列出了3条链路信息，分别是由R1、R2和R3产生的。 (6)在R1和R3路由器上查看OSPF邻居信息，可以看到它们的邻居都是R2。 (7)使用show ip route ospf命令可以查看由OSPF协议所得到的路由项，便我们在众多路由项中找到想看的OSPF路由项。 (8)使用带有网段参数的show ip route命令可以查看相应的网段(如实验中的172.16.1.0)的具体信息，包括由什么协议获取、度量值、路由源及更新时间等信息。
