实验六OSPF的六类LSA

1、 全网启动OSPF协议。
2、 将R1,R2的环回接口发入OSPF中

<r5>dis ip routing-table protocol ospf 
Route Flags: R - relay, D - download to fib
------------------------------------------------------------------------------
Public routing table : OSPF
         Destinations : 8        Routes : 8        
OSPF routing table status : <Active>
         Destinations : 8        Routes : 8
Destination/Mask    Proto   Pre  Cost    Flags NextHop         Interface
172.16.1.0/24  O_ASE   150  1           D    10.0.235.3      GigabitEthernet
0/0/0
192.168.1.0/24  O_ASE   150  1          D   10.0.235.2      GigabitEthernet
0/0/0

3、 查看R5的数据库

1、<r5>dis ospf lsdb
	 OSPF Process 1 with Router ID 5.5.5.5
		 Link State Database 
		         Area: 0.0.0.0
 Type      LinkState ID    AdvRouter          Age  Len   Sequence   Metric
 Router    2.2.2.2         2.2.2.2            536  36    80000008       1
 Router    5.5.5.5         5.5.5.5            535  48    80000007       1
 Router    3.3.3.3         3.3.3.3            530  36    80000006       1
 Network   10.0.235.2      2.2.2.2            536  36    80000005       0
 Sum-Net   10.0.34.0       3.3.3.3            509  28    80000002       1
 Sum-Net   10.0.12.0       2.2.2.2            794  28    80000002       1
 Sum-Net   10.0.3.3        3.3.3.3            520  28    80000002       0
 Sum-Net   10.0.2.2        2.2.2.2            794  28    80000002       0
 Sum-Net   10.0.1.1        2.2.2.2            794  28    80000002       1
 Sum-Net   10.0.4.4        3.3.3.3            298  28    80000002       1
 Sum-Asbr  4.4.4.4         3.3.3.3           1731  28    80000001       1
 Sum-Asbr  1.1.1.1         2.2.2.2           1795  28    80000001       1
		 AS External Database
 Type      LinkState ID    AdvRouter          Age  Len   Sequence   Metric
 External  192.168.1.0     1.1.1.1            963  36    80000001       1
 External  172.16.1.0      4.4.4.4            772  36    80000001       1
有5种LSA,router-las net-lsa、sum-net、sum-ASbr、External
2、查看router2.2.2.2的详细信息
<r5>dis ospf lsdb router 2.2.2.2
	 OSPF Process 1 with Router ID 5.5.5.5
		         Area: 0.0.0.0
		 Link State Database 
  Type      : Router  LSA的类型
  Ls id     : 2.2.2.2   产生该路由的路由器的router-id
  Adv rtr   : 2.2.2.2  
  Ls age    : 719 
  Len       : 36 
  Options   :  ABR  E  
  seq#      : 80000008 
  chksum    : 0x55f5
  Link count: 1      LSA的头信息
   * Link ID: 10.0.235.2   DR的ip地址ip
     Data   : 10.0.235.2   该路由器的ip
     Link Type: TransNet     
     Metric : 1

<r5>dis ospf lsdb network 10.0.235.2
	 OSPF Process 1 with Router ID 5.5.5.5
		         Area: 0.0.0.0
		 Link State Database 
  Type      : Network
  Ls id     : 10.0.235.2
  Adv rtr   : 2.2.2.2  
  Ls age    : 1037 
  Len       : 36 
  Options   :  E  
  seq#      : 80000005 
  chksum    : 0xb178
  Net mask  : 255.255.255.0
  Priority  : Low
     Attached Router    2.2.2.2 连接到这个网络的路由器为
     Attached Router    3.3.3.3
     Attached Router    5.5.5.5

4、查看边界路由器的数据库

<r2>dis ospf lsdb
	 OSPF Process 1 with Router ID 2.2.2.2
		 Link State Database
		         Area: 0.0.0.0
 Type      LinkState ID    AdvRouter          Age  Len   Sequence   Metric
 Router    2.2.2.2         2.2.2.2           1178  36    80000008       1
 Router    5.5.5.5         5.5.5.5           1180  48    80000007       1
 Router    3.3.3.3         3.3.3.3           1173  36    80000006       1
 Network   10.0.235.2      2.2.2.2           1178  36    80000005       0
 Sum-Net   10.0.34.0       3.3.3.3           1152  28    80000002       1
 Sum-Net   10.0.12.0       2.2.2.2           1436  28    80000002       1
 Sum-Net   10.0.3.3        3.3.3.3           1163  28    80000002       0
 Sum-Net   10.0.2.2        2.2.2.2           1436  28    80000002       0
 Sum-Net   10.0.1.1        2.2.2.2           1436  28    80000002       1
 Sum-Net   10.0.4.4        3.3.3.3            941  28    80000002       1
 Sum-Asbr  4.4.4.4         3.3.3.3            575  28    80000002       1
 Sum-Asbr  1.1.1.1         2.2.2.2            638  28    80000002       1
		         Area: 0.0.0.1
 Type      LinkState ID    AdvRouter          Age  Len   Sequence   Metric
 Router    2.2.2.2         2.2.2.2           1484  48    80000006       1
 Router    1.1.1.1         1.1.1.1            639  48    80000008       1
 Network   10.0.12.1       1.1.1.1           1540  32    80000003       0
 Sum-Net   10.0.34.0       2.2.2.2           1151  28    80000002       2
 Sum-Net   10.0.235.0      2.2.2.2           1436  28    80000002       1
 Sum-Net   10.0.3.3        2.2.2.2           1163  28    80000002       1
 Sum-Net   10.0.5.5        2.2.2.2           1308  28    80000002       1
 Sum-Net   10.0.4.4        2.2.2.2            940  28    80000002       2
 Sum-Asbr  4.4.4.4         2.2.2.2            574  28    80000002       2
		 AS External Database
 Type      LinkState ID    AdvRouter          Age  Len   Sequence   Metric
 External  192.168.1.0     1.1.1.1           1605  36    80000001       1
 External  172.16.1.0      4.4.4.4           1415  36    80000001       1
区域0有一条路由为10.0.12.0这条路由是边界路由器转换为Sum-Net LSA并且泛洪到区域0中
Sum-Net   10.0.3.3        3.3.3.3           1163  28    80000002       0

5、 查看4、5类LSA

		 AS External Database
Type      LinkState ID    AdvRouter          Age  Len   Sequence   Metric
External  192.168.1.0     1.1.1.1            256  36    80000002       1
 External  172.16.1.0      4.4.4.4             67  36    80000002       1
R1的两条为五类LSA,查看详细信息
<r1>dis ospf lsdb ase 172.16.1.0
	 OSPF Process 1 with Router ID 1.1.1.1
		 Link State Database
  Type      : External  类型
  Ls id     : 172.16.1.0 
  Adv rtr   : 4.4.4.4  
  Ls age    : 256 
  Len       : 36 
  Options   :  E  
  seq#      : 80000002 
  chksum    : 0xf30e
  Net mask  : 255.255.255.0 
  TOS 0  Metric: 1 
  E type    : 2
  Forwarding Address : 0.0.0.0 
  Tag       : 1 
  Priority  : Low
R235都存在这条路由
Sum-Net和Sum-Asbr LSA都是由ABR产生的，第一个是计算区域见的路由，第二个是计算到达ASBR的路由的，如果不存在域外路由这条LSA也不存在

6、 查看七类LSA(NSSA)

  Type      : NSSA
  Ls id     : 172.16.1.0
  Adv rtr   : 4.4.4.4  
  Ls age    : 177 
  Len       : 36 
  Options   :  NP  
  seq#      : 80000001 
  chksum    : 0x5a8e
  Net mask  : 255.255.255.0 
  TOS 0  Metric: 1 
  E type    : 2
  Forwarding Address : 10.0.4.4 
  Tag       : 1 
  Priority  : Low
和External LSA相同
NSSA不能泛洪到其他区域，他是将七类路由转换为五类路由传入其他区域