• MGRE结合OSPF（超详解）

    目录

     一，R6为ISP只能配置IP地址，R1-R5的环回为私有网段

    1.首先给各个设备分配IP并设置缺省使全网可达

     2.配置完成后ping一下其他路由器发现都通

     二，R1/2/3为星型的拓扑结构（MGRE），R1为中心站点

     R1配置

    R2配置

    R3配置

     在R1中心站点上查询到R2，R3上交的表

     三，R1/4/5为全连的MGRE结构

    R1为中心

    R4为中心

    R5为中心

    四，所有私有网段可以互相通讯，使用OSPF完成

    由于MGRE环境不支持组播，所以需要开启伪广播

    在R1-5上开启OSPF

    最后查路由表可以看到都在 

     所有私有网段互相通信

     一，R6为ISP只能配置IP地址，R1-R5的环回为私有网段

    1.首先给各个设备分配IP并设置缺省使全网可达

     2.配置完成后ping一下其他路由器发现都通

     

     二，R1/2/3为星型的拓扑结构（MGRE），R1为中心站点

     R1配置

    1. [r1]int Tunnel 0/0/0
    2. [r1-Tunnel0/0/0]ip add 192.168.7.1 24
    3. [r1-Tunnel0/0/0]tunnel-protocol gre p2mp 
    4. [r1-Tunnel0/0/0]source 16.0.0.1
    5. Sep 18 2022 18:43:45-08:00 r1 %%01IFNET/4/LINK_STATE(l)[0]:The line protocol IP 
    6. on the interface Tunnel0/0/0 has entered the UP state. 
    7. [r1-Tunnel0/0/0]nhrp network-id 100

    R2配置

    1. [r2]int t0/0/0
    2. [r2-Tunnel0/0/0]ip add 192.168.7.2 24	
    3. [r2-Tunnel0/0/0]tunnel-protocol gre p2mp 
    4. [r2-Tunnel0/0/0]source GigabitEthernet 0/0/0
    5. Sep 18 2022 18:44:47-08:00 r2 %%01IFNET/4/LINK_STATE(l)[0]:The line protocol IP 
    6. on the interface Tunnel0/0/0 has entered the UP state. 	
    7. [r2-Tunnel0/0/0]nhrp network-id 100
    8. [r2-Tunnel0/0/0]nhrp entry 192.168.7.1 16.0.0.1 register

    R3配置

    1. [r3]int t0/0/0
    2. [r3-Tunnel0/0/0]ip add 192.168.7.3 24
    3. [r3-Tunnel0/0/0]tunnel-protocol gre p2mp 
    4. [r3-Tunnel0/0/0]source GigabitEthernet 0/0/0
    5. Sep 18 2022 18:46:16-08:00 r3 %%01IFNET/4/LINK_STATE(l)[0]:The line protocol IP 
    6. on the interface Tunnel0/0/0 has entered the UP state. 
    7. [r3-Tunnel0/0/0]nhrp network-id 100
    8. [r3-Tunnel0/0/0]nhrp entry 192.168.7.1 16.0.0.1 register

     在R1中心站点上查询到R2，R3上交的表

     三，R1/4/5为全连的MGRE结构

    R1为中心

    R1配置

    1. [r1]int t0/0/1
    2. [r1-Tunnel0/0/1]ip add 192.168.8.1 24
    3. [r1-Tunnel0/0/1]tunnel-protocol gre p2mp
    4. [r1-Tunnel0/0/1]source 61.0.0.1
    5. Sep 18 2022 19:00:23-08:00 r1 %%01IFNET/4/LINK_STATE(l)[0]:The line protocol IP 
    6. on the interface Tunnel0/0/1 has entered the UP state. 	
    7. [r1-Tunnel0/0/1]nhrp network-id 200

    R4配置

    1. [r4]int t0/0/1
    2. [r4-Tunnel0/0/1]ip add 192.168.8.2 24
    3. [r4-Tunnel0/0/1]tunnel-protocol gre p2mp
    4. [r4-Tunnel0/0/1]source g0/0/0
    5. Sep 18 2022 19:02:34-08:00 r4 %%01IFNET/4/LINK_STATE(l)[0]:The line protocol IP 
    6. on the interface Tunnel0/0/1 has entered the UP state. 
    7. [r4-Tunnel0/0/1]nhrp network-id 200
    8. [r4-Tunnel0/0/1]nhrp entry 192.168.8.1 61.0.0.1 register

    R5配置

    1. [r5]int t0/0/1
    2. [r5-Tunnel0/0/1]ip add 192.168.8.3 24	
    3. [r5-Tunnel0/0/1]tunnel-protocol gre p2mp 
    4. [r5-Tunnel0/0/1]source g0/0/0
    5. Sep 18 2022 19:03:48-08:00 r5 %%01IFNET/4/LINK_STATE(l)[0]:The line protocol IP 
    6. on the interface Tunnel0/0/1 has entered the UP state. 
    7. [r5-Tunnel0/0/1]nhrp network-id 200
    8. [r5-Tunnel0/0/1]nhrp entry 192.168.8.1 61.0.0.1 register

    R4为中心

     R4配置

    1. [r4-Tunnel0/0/1]source 46.0.0.1
    2. [r4-Tunnel0/0/1]nhrp network-id 400

    R1配置

    1. [r1-Tunnel0/0/1]source g0/0/0
    2. [r1-Tunnel0/0/1]nhrp network-id 400
    3. [r1-Tunnel0/0/1]nhrp entry 192.168.8.2 46.0.0.1 register

    R5配置

    1. [r5-Tunnel0/0/1]source g0/0/0
    2. [r5-Tunnel0/0/1]nhrp network-id 400
    3. [r5-Tunnel0/0/1]nhrp entry 192.168.8.2 46.0.0.1 register

    R5为中心

     R5配置

    1. [r5-Tunnel0/0/1]source 56.0.0.1
    2. [r5-Tunnel0/0/1]nhrp network-id 500

    R1配置

    1. [r1-Tunnel0/0/1]nhrp network-id 500	
    2. [r1-Tunnel0/0/1]nhrp entry 192.168.8.3 56.0.0.1 register

    R4配置

    1. [r4-Tunnel0/0/1]nhrp network-id 500
    2. [r4-Tunnel0/0/1]nhrp entry 192.168.8.3 56.0.0.1 register

    四，所有私有网段可以互相通讯，使用OSPF完成

    由于MGRE环境不支持组播，所以需要开启伪广播

    [r1-Tunnel0/0/0]nhrp entry multicast dynamic

    在R1-5上开启OSPF

    由于通道p2p为点到点所以改为 broadcast

    1. ospf network-type broadcast
    2. #需进入每个接口修改

    最后查路由表可以看到都在 

    1. [r1]display ip routing-table 
    2. Route Flags: R - relay, D - download to fib
    3. ------------------------------------------------------------------------------
    4. Routing Tables: Public
    5.          Destinations : 27       Routes : 28       
    6.  
    7. Destination/Mask    Proto   Pre  Cost      Flags NextHop         Interface
    8.  
    9.         0.0.0.0/0   Static  60   0          RD   61.0.0.2        GigabitEthernet
    10. 0/0/0
    11.                     Static  60   0          RD   16.0.0.2        GigabitEthernet
    12. 0/0/1
    13.        16.0.0.0/24  Direct  0    0           D   16.0.0.1        GigabitEthernet
    14. 0/0/1
    15.        16.0.0.1/32  Direct  0    0           D   127.0.0.1       GigabitEthernet
    16. 0/0/1
    17.      16.0.0.255/32  Direct  0    0           D   127.0.0.1       GigabitEthernet
    18. 0/0/1
    19.        61.0.0.0/24  Direct  0    0           D   61.0.0.1        GigabitEthernet
    20. 0/0/0
    21.        61.0.0.1/32  Direct  0    0           D   127.0.0.1       GigabitEthernet
    22. 0/0/0
    23.      61.0.0.255/32  Direct  0    0           D   127.0.0.1       GigabitEthernet
    24. 0/0/0
    25.       127.0.0.0/8   Direct  0    0           D   127.0.0.1       InLoopBack0
    26.       127.0.0.1/32  Direct  0    0           D   127.0.0.1       InLoopBack0
    27. 127.255.255.255/32  Direct  0    0           D   127.0.0.1       InLoopBack0
    28.     192.168.1.0/24  Direct  0    0           D   192.168.1.1     LoopBack0
    29.     192.168.1.1/32  Direct  0    0           D   127.0.0.1       LoopBack0
    30.   192.168.1.255/32  Direct  0    0           D   127.0.0.1       LoopBack0
    31.     192.168.2.1/32  OSPF    10   1562        D   192.168.7.2     Tunnel0/0/0
    32.     192.168.3.1/32  OSPF    10   1562        D   192.168.7.3     Tunnel0/0/0
    33.     192.168.4.1/32  OSPF    10   1562        D   192.168.8.2     Tunnel0/0/1
    34.     192.168.5.1/32  OSPF    10   1562        D   192.168.8.3     Tunnel0/0/1
    35.     192.168.6.0/24  Direct  0    0           D   192.168.6.1     LoopBack1
    36.     192.168.6.1/32  Direct  0    0           D   127.0.0.1       LoopBack1
    37.   192.168.6.255/32  Direct  0    0           D   127.0.0.1       LoopBack1
    38.     192.168.7.0/24  Direct  0    0           D   192.168.7.1     Tunnel0/0/0
    39.     192.168.7.1/32  Direct  0    0           D   127.0.0.1       Tunnel0/0/0
    40.   192.168.7.255/32  Direct  0    0           D   127.0.0.1       Tunnel0/0/0
    41.     192.168.8.0/24  Direct  0    0           D   192.168.8.1     Tunnel0/0/1
    42.     192.168.8.1/32  Direct  0    0           D   127.0.0.1       Tunnel0/0/1
    43.   192.168.8.255/32  Direct  0    0           D   127.0.0.1       Tunnel0/0/1
    44. 255.255.255.255/32  Direct  0    0           D   127.0.0.1       InLoopBack0

     所有私有网段互相通信

     

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  • 原文地址：https://blog.csdn.net/weixin_64051859/article/details/126920915