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至顶网网络频道双nat路由试验,走ospf动态路由

双nat路由试验,走ospf动态路由

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  一台路由器(R2)三个接口,一个接内部网络,二个接ISP1(R1)和ISP2(R3),把二个ISP的出口接入同一个交换机,然后在交换机外再接一台路由器(route),二个ISP即(R1,R3,router)走ospf 动态路由,再R2上做策略路由,根据下一跳地址来做路由决定。

来源:论坛整理 2008年12月21日

关键字: 路由协议 OSPF 网络技术

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 试验环境:
  一台路由器(R2)三个接口,一个接内部网络,二个接ISP1(R1)和ISP2(R3),把二个ISP的出口接入同一个交换机,然后在交换机外再接一台路由器(route),二个ISP即(R1,R3,router)走ospf 动态路由,再R2上做策略路由,根据下一跳地址来做路由决定。
  
                     
           ---R3 ---
     route---        ----R2----内部网络
           ---R1 ---
  
        
  
  R3#sh run
  Building configuration...
  
  Current configuration : 902 bytes
  !
  version 12.2
  service timestamps debug uptime
  service timestamps log uptime
  no service password-encryption
  !
  hostname R3
  !
  enable secret 5 $1$yd5D$PSCihTgQQhhAsLJRhZYBI.
  !
  ip subnet-zero
  no ip domain-lookup
  ip host R3 192.168.23.3
  !
  !
  !
  !
  !
  interface Loopback0
  ip address 3.3.3.3 255.255.255.0
  !
  interface Ethernet0
  ip address 172.16.13.3 255.255.255.0
  !
  interface Serial0
  no ip address
  shutdown
  !
  interface Serial1
  ip address 192.168.23.3 255.255.255.0
  !
  router ospf 1
  router-id 3.3.3.3
  log-adjacency-changes
  redistribute connected subnets
  redistribute static subnets
  network 172.16.13.0 0.0.0.255 area 0
  !
  ip classless
  ip route 192.168.100.0 255.255.255.0 192.168.23.2
  ip http server
  !
  snmp-server community public RO
  snmp-server community private RW
  snmp-server enable traps tty
  !
  line con 0
  logging synchronous
  line aux 0
  line vty 0 4
  password cisco
  logging synchronous
  login
  !
  end
  
  R3#
  
  
  R2#
  R2#sh run
  Building configuration...
  
  Current configuration : 1667 bytes
  !
  version 12.1
  no service single-slot-reload-enable
  service timestamps debug uptime
  service timestamps log uptime
  no service password-encryption
  !
  hostname R2
  !
  logging rate-limit console 10 except errors
  enable secret 5 $1$yOVt$dwGkyiFW674ow6bsPMdgZ0
  !
  ip subnet-zero
  no ip finger
  no ip domain-lookup
  ip host R2 192.168.12.1
  ip host R3 192.168.23.3
  !
  cns event-service server
  !
  !
  !
  !
  !
  interface Loopback0
  ip address 2.2.2.2 255.255.255.0
  !
  interface Ethernet0
  ip address 192.168.100.107 255.255.255.0
  ip nat inside
  !
  interface Serial0
  ip address 192.168.12.2 255.255.255.0
  ip nat outside
  clockrate 64000
  !
  interface Serial1
  ip address 192.168.23.2 255.255.255.0
  ip nat outside
  clockrate 64000
  !
  interface Serial2
  no ip address
  shutdown
  !
  interface Serial3
  no ip address
  shutdown
  !
  interface BRI0
  no ip address
  shutdown
  !
  ip kerberos source-interface any
  ip nat inside source route-map nat interface Serial1 overload
  ip nat inside source route-map test interface Serial0 overload
  ip classless
  ip route 172.16.13.0 255.255.255.0 192.168.23.3
  ip route 172.16.13.0 255.255.255.0 192.168.12.1
  no ip http server
  !
  access-list 1 permit 192.168.100.199
  access-list 1 permit 192.168.100.233
  access-list 1 permit 192.168.100.224
  access-list 9 permit 192.168.12.1
  access-list 10 permit 192.168.23.3
  route-map test permit 10
  match ip address 1
  match ip next-hop 9
  !
  route-map cisco permit 10
  !
  route-map nat permit 10
  match ip address 1
  match ip next-hop 10
  !
  !
  snmp-server community public RO
  snmp-server community private RW
  !
  line con 0
  logging synchronous
  transport input none
  line aux 0
  line vty 0 4
  password cisco
  logging synchronous
  login
  !
  end
  
  R2#
  
  
  R1#sh run
  Building configuration...
  
  Current configuration : 1017 bytes
  !
  version 12.1
  no service single-slot-reload-enable
  service timestamps debug uptime
  service timestamps log uptime
  no service password-encryption
  !
  hostname R1
  !
  no logging rate-limit
  enable secret 5 $1$Ogll$BSpS5/nOBq8HtaKfwOZ8W0
  !
  ip subnet-zero
  no ip finger
  no ip domain-lookup
  !
  frame-relay switching
  cns event-service server
  !
  !
  !
  !
  !
  interface Loopback0
  ip address 4.4.4.4 255.255.255.0
  !
  interface Ethernet0
  ip address 172.16.13.1 255.255.255.0
  !
  interface Serial0
  ip address 192.168.12.1 255.255.255.0
  !
  interface Serial1
  no ip address
  !
  router ospf 1
  router-id 4.4.4.4
  log-adjacency-changes
  redistribute connected subnets
  redistribute static subnets
  network 172.16.13.0 0.0.0.255 area 0
  !
  ip kerberos source-interface any
  ip classless
  ip route 192.168.100.0 255.255.255.0 192.168.12.2
  ip http server
  !
  !
  snmp-server community public RO
  snmp-server community private RW
  !
  line con 0
  logging synchronous
  transport input none
  line aux 0
  line vty 0 4
  password cisco
  logging synchronous
  login
  !
  end
  
  R1#
  
  Router#sh run
  Building configuration...
  
  Current configuration : 769 bytes
  !
  version 12.2
  service timestamps debug datetime msec
  service timestamps log datetime msec
  no service password-encryption
  !
  hostname Router
  !
  logging queue-limit 100
  enable secret 5 $1$9esl$iWZwf6dLviD/956PWJoOT0
  !
  memory-size iomem 25
  ip subnet-zero
  !
  !
  !
  !
  !
  !
  !
  interface Loopback0
  ip address 5.5.5.5 255.255.255.0
  !
  interface Ethernet0
  no ip address
  shutdown
  half-duplex
  !
  interface FastEthernet0
  ip address 172.16.13.254 255.255.255.0
  speed auto
  !
  interface Serial0
  no ip address
  shutdown
  !
  interface Serial1
  no ip address
  shutdown
  !
  router ospf 1
  router-id 5.5.5.5
  log-adjacency-changes
  network 172.16.13.0 0.0.0.255 area 0
  !
  ip classless
  no ip http server
  !
  !
  !
  line con 0
  line aux 0
  line vty 0 4
  password cisco
  login
  !
  no scheduler allocate
  end
  
  Router#
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