OSPF路由引入-摩杜云开发者社区

路由引入原因

由于不同 路由协议之间的路由算法、机制、开销等不同，不同的路由协议之间无法直接分享彼此的路由;

此时就需要通过路由引入技术将某个路由协议的路由引入到另一个路由协议中也可以相同路由协议之间引入

RIP与OSPF 引入位置

在ASBR路由器执行引入指令

OSPF引入RIP

[R8]ospf 1
[R8-ospf-1]imp	
[R8-ospf-1]import-route ?
  bgp     Border Gateway Protocol (BGP) routes
  direct  Connected routes
  isis    Intermediate System to Intermediate System (IS-IS) routes
  limit   Limit the number of routes imported into OSPF
  ospf    Open Shortest Path First (OSPF) routes
  rip     Routing Information Protocol (RIP) routes
  static  Static routes
  unr     User Network Routes
[R8-ospf-1]import-route rip

RIP引入OSPF

[R8]rip 
[R8-rip-1]import-route ospf

RIP路由查看引入OSPF结果

[R9]display ip routing-table 
Route Flags: R - relay, D - download to fib
------------------------------------------------------------------------------
Routing Tables: Public
         Destinations : 31       Routes : 31       

Destination/Mask    Proto   Pre  Cost      Flags NextHop         Interface

        1.1.1.1/32  RIP     100  1           D   10.1.89.1       GigabitEthernet
0/0/0
        2.2.2.2/32  RIP     100  1           D   10.1.89.1       GigabitEthernet
0/0/0
        3.3.3.3/32  RIP     100  1           D   10.1.89.1       GigabitEthernet
0/0/0
        5.5.5.5/32  RIP     100  1           D   10.1.89.1       GigabitEthernet
0/0/0
        6.6.6.6/32  RIP     100  1           D   10.1.89.1       GigabitEthernet
0/0/0
        7.7.7.7/32  RIP     100  1           D   10.1.89.1       GigabitEthernet
0/0/0
        8.8.8.0/24  RIP     100  1           D   10.1.89.1       GigabitEthernet
0/0/0
        9.7.7.0/24  Direct  0    0           D   9.7.7.7         LoopBack2
        9.7.7.7/32  Direct  0    0           D   127.0.0.1       LoopBack2
      9.7.7.255/32  Direct  0    0           D   127.0.0.1       LoopBack2
        9.8.8.0/24  Direct  0    0           D   9.8.8.8         LoopBack1
        9.8.8.8/32  Direct  0    0           D   127.0.0.1       LoopBack1
      9.8.8.255/32  Direct  0    0           D   127.0.0.1       LoopBack1
        9.9.9.0/24  Direct  0    0           D   9.9.9.9         LoopBack0
        9.9.9.9/32  Direct  0    0           D   127.0.0.1       LoopBack0
      9.9.9.255/32  Direct  0    0           D   127.0.0.1       LoopBack0
      10.1.12.0/24  RIP     100  1           D   10.1.89.1       GigabitEthernet
0/0/0
      10.1.16.0/24  RIP     100  1           D   10.1.89.1       GigabitEthernet
0/0/0
      10.1.23.0/24  RIP     100  1           D   10.1.89.1       GigabitEthernet
0/0/0
      10.1.27.0/24  RIP     100  1           D   10.1.89.1       GigabitEthernet
0/0/0
      10.1.37.0/24  RIP     100  1           D   10.1.89.1       GigabitEthernet
0/0/0
      10.1.89.0/24  Direct  0    0           D   10.1.89.2       GigabitEthernet
0/0/0
      10.1.89.2/32  Direct  0    0           D   127.0.0.1       GigabitEthernet
0/0/0
    10.1.89.255/32  Direct  0    0           D   127.0.0.1       GigabitEthernet
0/0/0
       12.1.1.0/24  Direct  0    0           D   12.1.1.2        LoopBack3
       12.1.1.2/32  Direct  0    0           D   127.0.0.1       LoopBack3
     12.1.1.255/32  Direct  0    0           D   127.0.0.1       LoopBack3
      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
255.255.255.255/32  Direct  0    0           D   127.0.0.1       InLoopBack0

OSPF区域查看RIP引入结果

[R1]display ip routing-table 
Route Flags: R - relay, D - download to fib
------------------------------------------------------------------------------
Routing Tables: Public
         Destinations : 27       Routes : 27       

Destination/Mask    Proto   Pre  Cost      Flags NextHop         Interface

        1.1.1.0/24  Direct  0    0           D   1.1.1.1         LoopBack0
        1.1.1.1/32  Direct  0    0           D   127.0.0.1       LoopBack0
      1.1.1.255/32  Direct  0    0           D   127.0.0.1       LoopBack0
        2.2.2.2/32  OSPF    10   1           D   10.1.12.2       GigabitEthernet
0/0/0
        3.3.3.3/32  OSPF    10   2           D   10.1.12.2       GigabitEthernet
0/0/0
        5.5.5.5/32  OSPF    10   1           D   10.1.12.5       GigabitEthernet
0/0/0
        6.6.6.6/32  OSPF    10   48          D   10.1.16.6       Serial2/0/0
        7.7.7.7/32  OSPF    10   2           D   10.1.12.2       GigabitEthernet
0/0/0
        8.8.8.8/32  OSPF    10   1           D   10.1.12.8       GigabitEthernet
0/0/0
        9.7.7.0/24  O_ASE   150  1           D   10.1.12.8       GigabitEthernet
0/0/0
        9.8.8.0/24  O_ASE   150  1           D   10.1.12.8       GigabitEthernet
0/0/0
        9.9.9.0/24  O_ASE   150  1           D   10.1.12.8       GigabitEthernet
0/0/0
      10.1.12.0/24  Direct  0    0           D   10.1.12.1       GigabitEthernet
0/0/0
      10.1.12.1/32  Direct  0    0           D   127.0.0.1       GigabitEthernet
0/0/0
    10.1.12.255/32  Direct  0    0           D   127.0.0.1       GigabitEthernet
0/0/0
      10.1.16.0/24  Direct  0    0           D   10.1.16.1       Serial2/0/0
      10.1.16.1/32  Direct  0    0           D   127.0.0.1       Serial2/0/0
      10.1.16.6/32  Direct  0    0           D   10.1.16.6       Serial2/0/0
    10.1.16.255/32  Direct  0    0           D   127.0.0.1       Serial2/0/0
      10.1.23.0/24  OSPF    10   2           D   10.1.12.2       GigabitEthernet
0/0/0
      10.1.27.0/24  OSPF    10   2           D   10.1.12.2       GigabitEthernet
0/0/0
      10.1.37.0/24  OSPF    10   3           D   10.1.12.2       GigabitEthernet
0/0/0
      10.1.89.0/24  O_ASE   150  1           D   10.1.12.8       GigabitEthernet
0/0/0
      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
255.255.255.255/32  Direct  0    0           D   127.0.0.1       InLoopBack0

查看路由表中，某个路由开销、优先级等信息

[R1]display ip routing-table 9.9.9.0 verbose 
Route Flags: R - relay, D - download to fib
------------------------------------------------------------------------------
Routing Table : Public
Summary Count : 1

Destination: 9.9.9.0/24
     Protocol: O_ASE            Process ID: 1
   Preference: 150                    Cost: 1
      NextHop: 10.1.12.8         Neighbour: 0.0.0.0
        State: Active Adv              Age: 00h22m19s
          Tag: 1                  Priority: low
        Label: NULL                QoSInfo: 0x0
   IndirectID: 0x0              
 RelayNextHop: 0.0.0.0           Interface: GigabitEthernet0/0/0
     TunnelID: 0x0                   Flags:  D
[R1]display ip routing-table 9.9.9.0
Route Flags: R - relay, D - download to fib
------------------------------------------------------------------------------
Routing Table : Public
Summary Count : 1
Destination/Mask    Proto   Pre  Cost      Flags NextHop         Interface

        9.9.9.0/24  O_ASE   150  1           D   10.1.12.8       GigabitEthernet
0/0/0

查看OSPF 协议路由类型

[R1]display ospf routing 9.9.9.0

	 OSPF Process 1 with Router ID 1.1.1.1

 Destination : 9.9.9.0/24         
 AdverRouter : 10.1.12.8                Tag       : 1     
 Cost        : 1                        Type      : Type2      
 NextHop     : 10.1.12.8                Interface : GigabitEthernet0/0/0  
 Priority    : Low                      Age       : 00h24m15s

名称解释

O_ASE : 自治系统外部路由  autonomous system external
O_NSSA: OSPF特殊区域路由

拓扑

OSPF路由引入_RIP