• OSPF协议项目实战


     1、要求按照下列标准配置一个OSPF网络
    2、配置一个IP网络,实验逻辑图如图,IP地址见拓扑图
    3、路由协议采用OSPF,进程ID为1 ,RID为loopback0地址
    4、R1/R2/R3相连的三个站点链路OSPF网络类型配置成广播型,其中R1路由器做为永久性DR
    5、按照图示配置OSPF区域,其中R2/R3/R4之间的区域要配置成完全末梢区域
    6、R6为新并入的站点,由于来不及布线施工而暂时并到R5这个站点上,所在区域为AREA 56,配置使得所有网络可达(采用ping测试)
    7、OSPF内部的网络希望通过R1路由器访问Internet,配置R1使其能够满足需求,只考虑内部路由器上路由的实现,不考虑NAT(下发默认路由)
    8、AREA 0基于安全的原因配置上MD5认证,Key-ID为1,密码:Huawei
    9、于R3与R4之间的链路质量较好,适当配置使得R4优先选取R3访问自身区域除外的外部网络
    10、为了减少网络流量,R1只能学习到R6环回口的路由条目汇总条目(172.16.0.0/16)

    1、要求按照下列标准配置一个OSPF网络

    搭建拓扑图如下

    2、配置一个IP网络,实验逻辑图如图,IP地址见拓扑图

    R1的IP地址配置

    sysname R1
    #
    interface GigabitEthernet0/0/0
     ip address 192.168.123.1 255.255.255.0 
    #
    interface LoopBack0
     ip address 1.1.1.1 255.255.255.255 

    R2的IP地址配置

    sysname R2
    #
    interface GigabitEthernet0/0/0
     ip address 192.168.123.2 255.255.255.0 
    #
    interface GigabitEthernet0/0/1
     ip address 192.168.24.2 255.255.255.0 
    #
    interface LoopBack0
     ip address 2.2.2.2 255.255.255.255 
    #

    R3的IP地址配置

    sysname R3
    #
    interface GigabitEthernet0/0/0
     ip address 192.168.123.3 255.255.255.0 
    #
    interface GigabitEthernet0/0/1
     ip address 192.168.34.3 255.255.255.0 
    #
    interface GigabitEthernet0/0/2
     ip address 192.168.35.3 255.255.255.0 
    #
    interface LoopBack0
     ip address 3.3.3.3 255.255.255.255 

    R4的IP地址配置

     sysname R4
    #
    interface GigabitEthernet0/0/0
     ip address 192.168.24.4 255.255.255.0 
    #
    interface GigabitEthernet0/0/1
     ip address 192.168.34.4 255.255.255.0 
    #
    interface LoopBack0
     ip address 4.4.4.4 255.255.255.255 
    #

    R5的IP地址配置

    sysname R5
    #
    interface GigabitEthernet0/0/0
     ip address 192.168.35.5 255.255.255.0 
    #
    interface GigabitEthernet0/0/1
     ip address 192.168.56.5 255.255.255.0 
    #
    interface LoopBack0
     ip address 5.5.5.5 255.255.255.255 
    #

    R6的IP地址配置

    sysname R6
    #
    interface GigabitEthernet0/0/0
     ip address 192.168.56.6 255.255.255.0 
    #
    interface LoopBack0
     ip address 192.168.3.1 255.255.255.0 
    #
    interface LoopBack1
     ip address 172.16.1.1 255.255.255.0 
    #
    interface LoopBack2
     ip address 172.16.2.1 255.255.255.0 
    #
    interface LoopBack3
     ip address 172.16.3.1 255.255.255.0 
    #
    interface LoopBack4
     ip address 172.16.4.1 255.255.255.0 

    做完基本的IP地址配置后,大家可以自行ping通各自的直连网段

    3、路由协议采用OSPF,进程ID为1 ,RID为loopback0地址

    R1的OSPF配置

    ospf 1 router-id 1.1.1.1 
     area 0.0.0.0 
      network 1.1.1.1 0.0.0.0 
      network 192.168.123.0 0.0.0.255

    R2的OSPF配置

    ospf 1 router-id 2.2.2.2
     area 0.0.0.0 
      network 2.2.2.2 0.0.0.0 
      network 192.168.123.0 0.0.0.255 
    area 0.0.0.234 
      network 192.168.24.0 0.0.0.255 

    R3的OSPF配置

    ospf 1 router-id 3.3.3.3
     area 0.0.0.0 
      network 3.3.3.3 0.0.0.0 
      network 192.168.123.0 0.0.0.255 
    area 0.0.0.234 
      network 192.168.34.0 0.0.0.255 
    area 0.0.0.35 
      network 192.168.35.0 0.0.0.255

    R4的OSPF配置

    ospf 1 router-id 4.4.4.4 
     area 0.0.0.234 
      network 4.4.4.4 0.0.0.0 
      network 192.168.24.0 0.0.0.255 
      network 192.168.34.0 0.0.0.255 

    R5的OSPF配置

    ospf 1 router-id 5.5.5.5 
    area 0.0.0.35 
      network 5.5.5.5 0.0.0.0 
      network 192.168.35.0 0.0.0.255 
    area 0.0.0.56 
      network 192.168.56.0 0.0.0.255

    R6的OSPF配置

    ospf 1 router-id 6.6.6.6 
     area 0.0.0.56 
      network 6.6.6.6 0.0.0.0 
      network 172.16.1.0 0.0.0.255 
      network 172.16.2.0 0.0.0.255 
      network 172.16.3.0 0.0.0.255 
      network 172.16.4.0 0.0.0.255 
      network 192.168.56.0 0.0.0.255 

    检查

    在各路由器上面检查如下

    <R1>display ospf peer brief 
    
         OSPF Process 1 with Router ID 1.1.1.1
              Peer Statistic Information
     ----------------------------------------------------------------------------
     Area Id          Interface                        Neighbor id      State    
     0.0.0.0          GigabitEthernet0/0/0             2.2.2.2          Full        
     0.0.0.0          GigabitEthernet0/0/0             3.3.3.3          Full        
     ----------------------------------------------------------------------------
    <R1>
    <R2>dis ospf peer brief 
    
         OSPF Process 1 with Router ID 2.2.2.2
              Peer Statistic Information
     ----------------------------------------------------------------------------
     Area Id          Interface                        Neighbor id      State    
     0.0.0.0          GigabitEthernet0/0/0             1.1.1.1          Full        
     0.0.0.0          GigabitEthernet0/0/0             3.3.3.3          Full        
     0.0.0.234        GigabitEthernet0/0/1             4.4.4.4          Full        
     ----------------------------------------------------------------------------
    <R2>
    [R3]display ospf peer brief 
    
         OSPF Process 1 with Router ID 3.3.3.3
              Peer Statistic Information
     ----------------------------------------------------------------------------
     Area Id          Interface                        Neighbor id      State    
     0.0.0.0          GigabitEthernet0/0/0             1.1.1.1          Full        
     0.0.0.0          GigabitEthernet0/0/0             2.2.2.2          Full        
     0.0.0.35         GigabitEthernet0/0/2             5.5.5.5          Full        
     0.0.0.234        GigabitEthernet0/0/1             4.4.4.4          Full        
     ----------------------------------------------------------------------------
    [R3]
    [R4]display ospf peer brief
    
         OSPF Process 1 with Router ID 4.4.4.4
              Peer Statistic Information
     ----------------------------------------------------------------------------
     Area Id          Interface                        Neighbor id      State    
     0.0.0.234        GigabitEthernet0/0/0             2.2.2.2          Full        
     0.0.0.234        GigabitEthernet0/0/1             3.3.3.3          Full        
     ----------------------------------------------------------------------------
    [R4]
    [R5]display ospf peer brief
    
         OSPF Process 1 with Router ID 5.5.5.5
              Peer Statistic Information
     ----------------------------------------------------------------------------
     Area Id          Interface                        Neighbor id      State    
     0.0.0.35         GigabitEthernet0/0/0             3.3.3.3          Full        
     0.0.0.56         GigabitEthernet0/0/1             6.6.6.6          Full        
     ----------------------------------------------------------------------------
    [R5]
    [R6]display ospf peer brief
    
         OSPF Process 1 with Router ID 6.6.6.6
              Peer Statistic Information
     ----------------------------------------------------------------------------
     Area Id          Interface                        Neighbor id      State    
     0.0.0.56         GigabitEthernet0/0/0             5.5.5.5          Full        
     ----------------------------------------------------------------------------
    [R6]

    此时发现R1 R2 R3 R4 R5之间都能够学习到各自的OSPF路由条目,R6由于没有按照正确的OSPF拓扑区域结构进行划分,导致R6不能够学习到任何其他设备的路由条目

    4、R1/R2/R3相连的三个站点链路OSPF网络类型配置成广播型,其中R1路由器做为永久性DR

    思路就是把R2和R3的接口优先级设置为0 OSPF的接口优先级的取值范围是0~255 当优先级为0的时候 代表本接口OSPF路由器不参与DR的选举,优先级为255就只代表优先级为255 这个和VRRP那个优先级要区分开来

    interface GigabitEthernet0/0/0
     ospf dr-priority 0

    在R1上面查看DR

    <R1>display ospf interface GigabitEthernet 0/0/0
    
         OSPF Process 1 with Router ID 1.1.1.1
             Interfaces 
    
    
     Interface: 192.168.123.1 (GigabitEthernet0/0/0)
     Cost: 1       State: DR        Type: Broadcast    MTU: 1500  
     Priority: 1
     Designated Router: 192.168.123.1
     Backup Designated Router: 0.0.0.0
     Timers: Hello 10 , Dead 40 , Poll  120 , Retransmit 5 , Transmit Delay 1 
    <R1>

    5、按照图示配置OSPF区域,其中R2/R3/R4之间的区域要配置成完全末梢区域

    R2的配置

    ospf 1 router-id 2.2.2.2 
    area 0.0.0.234 
      stub no-summary

    R3的配置

    ospf 1 router-id 3.3.3.3
    area 0.0.0.234 
      stub no-summary

    R4的配置

    ospf 1 router-id 4.4.4.4
    area 0.0.0.234 
      stub no-summary

    检查:

    [R4]display ospf lsdb 
    
         OSPF Process 1 with Router ID 4.4.4.4
             Link State Database 
    
                     Area: 0.0.0.234
     Type      LinkState ID    AdvRouter          Age  Len   Sequence   Metric
     Router    4.4.4.4         4.4.4.4             51  60    80000006       1
     Router    2.2.2.2         2.2.2.2             53  36    80000005       1
     Router    3.3.3.3         3.3.3.3             58  36    80000005       1
     Network   192.168.24.4    4.4.4.4             51  32    80000002       0
     Network   192.168.34.4    4.4.4.4             55  32    80000002       0
     Sum-Net   0.0.0.0         3.3.3.3            111  28    80000001       1
     Sum-Net   0.0.0.0         2.2.2.2            122  28    80000001       1
     
    [R4]display ip routing-table 
    Route Flags: R - relay, D - download to fib
    ------------------------------------------------------------------------------
    Routing Tables: Public
             Destinations : 12       Routes : 13       
    
    Destination/Mask    Proto   Pre  Cost      Flags NextHop         Interface
    
            0.0.0.0/0   OSPF    10   2           D   192.168.34.3    GigabitEthernet
    0/0/1
                        OSPF    10   2           D   192.168.24.2    GigabitEthernet
    0/0/0
            4.4.4.4/32  Direct  0    0           D   127.0.0.1       LoopBack0
          127.0.0.0/8   Direct  0    0           D   127.0.0.1       InLoopBack0
          127.0.0.1/32  Direct  0    0           D   127.0.0.1       InLoopBack0
    127.255.255.255/32  Direct  0    0           D   127.0.0.1       InLoopBack0
       192.168.24.0/24  Direct  0    0           D   192.168.24.4    GigabitEthernet
    0/0/0
       192.168.24.4/32  Direct  0    0           D   127.0.0.1       GigabitEthernet
    0/0/0
     192.168.24.255/32  Direct  0    0           D   127.0.0.1       GigabitEthernet
    0/0/0
       192.168.34.0/24  Direct  0    0           D   192.168.34.4    GigabitEthernet
    0/0/1
       192.168.34.4/32  Direct  0    0           D   127.0.0.1       GigabitEthernet
    0/0/1
     192.168.34.255/32  Direct  0    0           D   127.0.0.1       GigabitEthernet
    0/0/1
    255.255.255.255/32  Direct  0    0           D   127.0.0.1       InLoopBack0
    
    [R4]

    6、R6为新并入的站点,由于来不及布线施工而暂时并到R5这个站点上,所在区域为AREA 56,配置使得所有网络可达(采用ping测试)

    R3的配置如下

    ospf 1 router-id 3.3.3.3 
    area 0.0.0.35 
      network 192.168.35.0 0.0.0.255 
      vlink-peer 5.5.5.5

    R5的配置如下

    ospf 1 router-id 5.5.5.5
    area 0.0.0.35 
      network 192.168.35.0 0.0.0.255 
      vlink-peer 3.3.3.3

    检查

    [R3]display ospf vlink 
    
         OSPF Process 1 with Router ID 3.3.3.3
             Virtual Links 
    
     Virtual-link Neighbor-id  -> 5.5.5.5, Neighbor-State: Full
    
     Interface: 192.168.35.3 (GigabitEthernet0/0/2)
     Cost: 1  State: P-2-P  Type: Virtual 
     Transit Area: 0.0.0.35 
     Timers: Hello 10 , Dead 40 , Retransmit 5 , Transmit Delay 1 
     GR State: Normal 
     
    [R3]
    [R5]display ospf vlink 
    
         OSPF Process 1 with Router ID 5.5.5.5
             Virtual Links 
    
     Virtual-link Neighbor-id  -> 3.3.3.3, Neighbor-State: Full
    
     Interface: 192.168.35.5 (GigabitEthernet0/0/0)
     Cost: 1  State: P-2-P  Type: Virtual 
     Transit Area: 0.0.0.35 
     Timers: Hello 10 , Dead 40 , Retransmit 5 , Transmit Delay 1 
     GR State: Normal 
     
    [R5]

    检查一下路由情况

    在R1这边查看172网段的路由情况

    <R1>display ospf lsdb 
    
         OSPF Process 1 with Router ID 1.1.1.1
             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            468  48    8000000E       1
     Router    1.1.1.1         1.1.1.1            472  48    8000000E       1
     Router    5.5.5.5         5.5.5.5            104  36    80000001       1
     Router    3.3.3.3         3.3.3.3            103  60    80000010       1
     Network   192.168.123.1   1.1.1.1            474  36    80000009       0
     Sum-Net   192.168.56.0    5.5.5.5            115  28    80000001       1
     Sum-Net   5.5.5.5         3.3.3.3            850  28    80000001       1
     Sum-Net   5.5.5.5         5.5.5.5            115  28    80000001       0
     Sum-Net   192.168.35.0    3.3.3.3            921  28    80000001       1
     Sum-Net   192.168.35.0    5.5.5.5            115  28    80000001       1
     Sum-Net   172.16.3.1      5.5.5.5            115  28    80000001       1
     Sum-Net   192.168.34.0    3.3.3.3            352  28    80000002       1
     Sum-Net   192.168.34.0    2.2.2.2            292  28    80000001       2
     Sum-Net   172.16.2.1      5.5.5.5            115  28    80000001       1
     Sum-Net   192.168.24.0    2.2.2.2            363  28    80000002       1
     Sum-Net   192.168.24.0    3.3.3.3            287  28    80000002       2
     Sum-Net   172.16.1.1      5.5.5.5            115  28    80000001       1
     Sum-Net   4.4.4.4         3.3.3.3            299  28    80000001       1
     Sum-Net   4.4.4.4         2.2.2.2            292  28    80000001       1
     Sum-Net   172.16.4.1      5.5.5.5            115  28    80000001       1
     
    [R3]display ospf lsdb 
    
         OSPF Process 1 with Router ID 3.3.3.3
             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            538  48    8000000E       1
     Router    1.1.1.1         1.1.1.1            543  48    8000000E       1
     Router    5.5.5.5         5.5.5.5            173  36    80000001       1
     Router    3.3.3.3         3.3.3.3            172  60    80000010       1
     Network   192.168.123.1   1.1.1.1            545  36    80000009       0
     Sum-Net   192.168.56.0    5.5.5.5            184  28    80000001       1
     Sum-Net   5.5.5.5         3.3.3.3            919  28    80000001       1
     Sum-Net   5.5.5.5         5.5.5.5            184  28    80000001       0
     Sum-Net   192.168.35.0    3.3.3.3            990  28    80000001       1
     Sum-Net   192.168.35.0    5.5.5.5            184  28    80000001       1
     Sum-Net   172.16.3.1      5.5.5.5            184  28    80000001       1
     Sum-Net   192.168.34.0    3.3.3.3            421  28    80000002       1
     Sum-Net   192.168.34.0    2.2.2.2            363  28    80000001       2
     Sum-Net   172.16.2.1      5.5.5.5            184  28    80000001       1
     Sum-Net   192.168.24.0    2.2.2.2            434  28    80000002       1
     Sum-Net   192.168.24.0    3.3.3.3            356  28    80000002       2
     Sum-Net   172.16.1.1      5.5.5.5            184  28    80000001       1
     Sum-Net   4.4.4.4         3.3.3.3            368  28    80000001       1
     Sum-Net   4.4.4.4         2.2.2.2            363  28    80000001       1
     Sum-Net   172.16.4.1      5.5.5.5            184  28    80000001       1
     
                     Area: 0.0.0.35
     Type      LinkState ID    AdvRouter          Age  Len   Sequence   Metric
     Router    5.5.5.5         5.5.5.5            173  48    80000006       1
     Router    3.3.3.3         3.3.3.3            172  36    80000006       1
     Network   192.168.35.3    3.3.3.3            919  32    80000002       0
     Sum-Net   192.168.56.0    5.5.5.5            183  28    80000001       1
     Sum-Net   192.168.123.0   3.3.3.3            990  28    80000001       1
     Sum-Net   3.3.3.3         3.3.3.3            990  28    80000001       0
     Sum-Net   172.16.3.1      5.5.5.5            184  28    80000001       1
     Sum-Net   192.168.34.0    3.3.3.3            424  28    80000002       1
     Sum-Net   172.16.2.1      5.5.5.5            186  28    80000001       1
     Sum-Net   192.168.24.0    3.3.3.3            424  28    80000002       2
     Sum-Net   172.16.1.1      5.5.5.5            186  28    80000001       1
     Sum-Net   4.4.4.4         3.3.3.3            371  28    80000001       1
     Sum-Net   2.2.2.2         3.3.3.3            543  28    80000002       1
     Sum-Net   172.16.4.1      5.5.5.5            186  28    80000001       1
     Sum-Net   1.1.1.1         3.3.3.3            543  28    80000002       1
     
                     Area: 0.0.0.234
     Type      LinkState ID    AdvRouter          Age  Len   Sequence   Metric
     Router    4.4.4.4         4.4.4.4            366  60    80000006       1
     Router    2.2.2.2         2.2.2.2            368  36    80000005       1
     Router    3.3.3.3         3.3.3.3            371  36    80000005       1
     Network   192.168.24.4    4.4.4.4            366  32    80000002       0
     Network   192.168.34.4    4.4.4.4            371  32    80000002       0
     Sum-Net   0.0.0.0         3.3.3.3            424  28    80000001       1
     Sum-Net   0.0.0.0         2.2.2.2            437  28    80000001       1
     

    7、OSPF内部的网络希望通过R1路由器访问Internet,配置R1使其能够满足需求,只考虑内部路由器上路由的实现,不考虑NAT(下发默认路由)

    在R1上面配置静态路由 然后下发其静态路由

    ip route-static 0.0.0.0 0.0.0.0 192.168.60.1
    ospf 1 router-id 1.1.1.1 
     default-route-advertise
     area 0.0.0.0 

    在R2 R3 R5 R6上面查看路由表

    <R2>display ip routing-table protocol ospf 
    Route Flags: R - relay, D - download to fib
    ------------------------------------------------------------------------------
    Public routing table : OSPF
             Destinations : 12       Routes : 12       
    
    OSPF routing table status : <Active>
             Destinations : 12       Routes : 12
    
    Destination/Mask    Proto   Pre  Cost      Flags NextHop         Interface
    
            0.0.0.0/0   O_ASE   150  1           D   192.168.123.1   GigabitEthernet
    0/0/0
            1.1.1.1/32  OSPF    10   1           D   192.168.123.1   GigabitEthernet
    0/0/0
            3.3.3.3/32  OSPF    10   1           D   192.168.123.3   GigabitEthernet
    0/0/0
            4.4.4.4/32  OSPF    10   1           D   192.168.24.4    GigabitEthernet
    0/0/1
            5.5.5.5/32  OSPF    10   2           D   192.168.123.3   GigabitEthernet
    0/0/0
         172.16.1.1/32  OSPF    10   3           D   192.168.123.3   GigabitEthernet
    0/0/0
         172.16.2.1/32  OSPF    10   3           D   192.168.123.3   GigabitEthernet
    0/0/0
         172.16.3.1/32  OSPF    10   3           D   192.168.123.3   GigabitEthernet
    0/0/0
         172.16.4.1/32  OSPF    10   3           D   192.168.123.3   GigabitEthernet
    0/0/0
       192.168.34.0/24  OSPF    10   2           D   192.168.24.4    GigabitEthernet
    0/0/1
       192.168.35.0/24  OSPF    10   2           D   192.168.123.3   GigabitEthernet
    0/0/0
       192.168.56.0/24  OSPF    10   3           D   192.168.123.3   GigabitEthernet
    0/0/0
    
    OSPF routing table status : <Inactive>
             Destinations : 0        Routes : 0

    8、AREA 0基于安全的原因配置上MD5认证,Key-ID为1,密码:Huawei

    在R1的区域0中配置区域0的认证

    #
    ospf 1 router-id 1.1.1.1 
    area 0.0.0.0 
      authentication-mode md5 1 plain Huawei
    #

    在R2的区域0中配置区域0的认证

    #
    ospf 1 router-id 2.2.2.2
    area 0.0.0.0 
      authentication-mode md5 1 plain Huawei
    #

    在R3的区域0中配置区域0的认证

    #
    ospf 1 router-id 3.3.3.3
    area 0.0.0.0 
      authentication-mode md5 1 plain Huawei
    #

    在R5的区域0中配置区域0的认证

    #
    ospf 1 router-id 5.5.5.5
    area 0.0.0.0 
      authentication-mode md5 1 plain Huawei

    或者第二种方法:

    #
    ospf 1 router-id 5.5.5.5 
     area 0.0.0.0 
     area 0.0.0.35 
      network 5.5.5.5 0.0.0.0 
      network 192.168.35.0 0.0.0.255 
      vlink-peer 3.3.3.3 md5 1 plain Huawei    直接在后面接上认证的参数也是可以的
     area 0.0.0.56 
      network 192.168.56.0 0.0.0.255 
    #

    检查 看下 R5和R3之间的FULL关系是否正常

    9、于R3与R4之间的链路质量较好,适当配置使得R4优先选取R3访问自身区域除外的外部网络

    在R4的G0/0/0接口修改OSPF的开销值

    [R4-GigabitEthernet0/0/0]dis this
    [V200R003C00]
    #
    interface GigabitEthernet0/0/0
     ip address 192.168.24.4 255.255.255.0 
     ospf cost 2
    #

    检查

    [R4]display ip routing-table 
    Route Flags: R - relay, D - download to fib
    ------------------------------------------------------------------------------
    Routing Tables: Public
             Destinations : 12       Routes : 12       
    
    Destination/Mask    Proto   Pre  Cost      Flags NextHop         Interface
    
            0.0.0.0/0   OSPF    10   2           D   192.168.34.3    GigabitEthernet
    0/0/1
            4.4.4.4/32  Direct  0    0           D   127.0.0.1       LoopBack0
          127.0.0.0/8   Direct  0    0           D   127.0.0.1       InLoopBack0
          127.0.0.1/32  Direct  0    0           D   127.0.0.1       InLoopBack0
    127.255.255.255/32  Direct  0    0           D   127.0.0.1       InLoopBack0
       192.168.24.0/24  Direct  0    0           D   192.168.24.4    GigabitEthernet
    0/0/0
       192.168.24.4/32  Direct  0    0           D   127.0.0.1       GigabitEthernet
    0/0/0
     192.168.24.255/32  Direct  0    0           D   127.0.0.1       GigabitEthernet
    0/0/0
       192.168.34.0/24  Direct  0    0           D   192.168.34.4    GigabitEthernet
    0/0/1
       192.168.34.4/32  Direct  0    0           D   127.0.0.1       GigabitEthernet
    0/0/1
     192.168.34.255/32  Direct  0    0           D   127.0.0.1       GigabitEthernet
    0/0/1
    255.255.255.255/32  Direct  0    0           D   127.0.0.1       InLoopBack0

    10、为了减少网络流量,R1只能学习到R6环回口的路由条目汇总条目(172.16.0.0/16)

    在R5的区域56当中进行路由汇总

    #
    ospf 1 router-id 5.5.5.5 
    area 0.0.0.56 
      abr-summary 172.16.0.0 255.255.0.0
    #
    return

    检查如下

    [R1]dis ip routing-table protocol ospf 
    Route Flags: R - relay, D - download to fib
    ------------------------------------------------------------------------------
    Public routing table : OSPF
             Destinations : 9        Routes : 10       
    
    OSPF routing table status : <Active>
             Destinations : 9        Routes : 10
    
    Destination/Mask    Proto   Pre  Cost      Flags NextHop         Interface
    
            2.2.2.2/32  OSPF    10   1           D   192.168.123.2   GigabitEthernet
    0/0/0
            3.3.3.3/32  OSPF    10   1           D   192.168.123.3   GigabitEthernet
    0/0/0
            4.4.4.4/32  OSPF    10   2           D   192.168.123.3   GigabitEthernet
    0/0/0
                        OSPF    10   2           D   192.168.123.2   GigabitEthernet
    0/0/0
            5.5.5.5/32  OSPF    10   2           D   192.168.123.3   GigabitEthernet
    0/0/0
         172.16.0.0/16  OSPF    10   3           D   192.168.123.3   GigabitEthernet
    0/0/0
       192.168.24.0/24  OSPF    10   2           D   192.168.123.2   GigabitEthernet
    0/0/0
       192.168.34.0/24  OSPF    10   2           D   192.168.123.3   GigabitEthernet
    0/0/0
       192.168.35.0/24  OSPF    10   2           D   192.168.123.3   GigabitEthernet
    0/0/0
       192.168.56.0/24  OSPF    10   3           D   192.168.123.3   GigabitEthernet
    0/0/0
    
    OSPF routing table status : <Inactive>
             Destinations : 0        Routes : 0
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  • 原文地址:https://www.cnblogs.com/liujunjun/p/13433942.html
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