浮动静态路由
 
Router0的配置:
Router>en
Router#configure terminal
Enter configuration commands, one per line.  End with CNTL/Z.
Router(config)#int f0/0
Router(config-if)#ip add 10.1.1.1 255.255.255.0
Router(config-if)#no shutdown
 
%LINK-5-CHANGED: Interface FastEthernet0/0, changed state to up
%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0, changed state to up
Router(config-if)#int s0/0
Router(config-if)#ip address 12.12.12.1 255.255.255.0
Router(config-if)#clock rate 64000
Router(config-if)#no shut
Router(config-if)#no shutdown
 
%LINK-5-CHANGED: Interface Serial0/0, changed state to down
Router(config-if)#int f0/1
Router(config-if)#ip add 21.21.21.1 255.255.255.0
Router(config-if)#no shutdown
 
%LINK-5-CHANGED: Interface FastEthernet0/1, changed state to up
Router(config-if)#
%LINK-5-CHANGED: Interface Serial0/0, changed state to up
%LINEPROTO-5-UPDOWN: Line protocol on Interface Serial0/0, changed state to up
%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/1, changed state to up
Router(config-if)#exit
Router(config)#ip route 192.168.1.0 255.255.255.0 12.12.12.2 ?
  <1-255>  Distance metric for this route
  <cr>
Router(config)#ip route 192.168.1.0 255.255.255.0 12.12.12.2 10
Router(config)#ip route 192.168.1.0 255.255.255.0 21.21.21.2 5
Router(config)#ip route 23.23.23.0 255.255.255.0 12.12.12.2
Router(config)#end
%SYS-5-CONFIG_I: Configured from console by console
Router#show ip rou
Router#show ip route
Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP
       D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
       N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
       E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
       i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS inter area
       * - candidate default, U - per-user static route, o - ODR
       P - periodic downloaded static route
 
Gateway of last resort is not set
 
     10.0.0.0/24 is subnetted, 1 subnets
C       10.1.1.0 is directly connected, FastEthernet0/0
     12.0.0.0/24 is subnetted, 1 subnets
C       12.12.12.0 is directly connected, Serial0/0
     21.0.0.0/24 is subnetted, 1 subnets
C       21.21.21.0 is directly connected, FastEthernet0/1
     23.0.0.0/24 is subnetted, 1 subnets
S       23.23.23.0 [1/0] via 12.12.12.2
S    192.168.1.0/24 [5/0] via 21.21.21.2
Router#
Router#ping 192.168.1.100
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.1.100, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 10/13/17 ms
 
Router#
 
 
 
Router 1 的配置:
Router>enable
Router#conf
Configuring from terminal, memory, or network [terminal]?
Enter configuration commands, one per line.  End with CNTL/Z.
Router(config)#int serial 0/0
Router(config-if)#ip add 12.12.12.2 255.255.255.0
Router(config-if)#no shutdown
 
%LINK-5-CHANGED: Interface Serial0/0, changed state to up
Router(config-if)#
%LINEPROTO-5-UPDOWN: Line protocol on Interface Serial0/0, changed state to up
Router(config-if)#int f0/1
Router(config-if)#ip add 21.21.21.2 255.255.255.0
Router(config-if)#no shutdown
 
%LINK-5-CHANGED: Interface FastEthernet0/1, changed state to up
%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/1, changed state to up
Router(config-if)#
Router(config-if)#int s0/1
Router(config-if)#ip add 23.23.23.1 255.255.255.0
 
%LINK-5-CHANGED: Interface Serial0/1, changed state to down
Router(config-if)#
Router(config-if)#clock rate 64000
Router(config-if)#no shutdown
Router(config-if)#
%LINK-5-CHANGED: Interface Serial0/1, changed state to up
%LINEPROTO-5-UPDOWN: Line protocol on Interface Serial0/1, changed state to up
Router(config-if)#end
%SYS-5-CONFIG_I: Configured from console by console
Router#configure terminal
Enter configuration commands, one per line.  End with CNTL/Z.
Router(config)#ip ?
  access-list       Named access-list
  default-network   Flags networks as candidates for default routes
  dhcp              Configure DHCP server and relay parameters
  domain            IP DNS Resolver
  domain-lookup     Enable IP Domain Name System hostname translation
  domain-name       Define the default domain name
  forward-protocol  Controls forwarding of physical and directed IP broadcasts
  host              Add an entry to the ip hostname table
  name-server       Specify address of name server to use
  nat               NAT configuration commands
  route             Establish static routes
Router(config)#ip ro
Router(config)#ip route 192.168.1.0 255.255.255.0 s
Router(config)#ip route 192.168.1.0 255.255.255.0 serial 0/1
Router(config)#ip route 10.1.1.0 255.255.255.0 12.12.12.1
Router(config)#end
%SYS-5-CONFIG_I: Configured from console by console
Router#show ip route
Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP
       D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
       N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
       E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
       i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS inter area
       * - candidate default, U - per-user static route, o - ODR
       P - periodic downloaded static route
 
Gateway of last resort is not set
 
     10.0.0.0/24 is subnetted, 1 subnets
S       10.1.1.0 [1/0] via 12.12.12.1
     12.0.0.0/24 is subnetted, 1 subnets
C       12.12.12.0 is directly connected, Serial0/0
     21.0.0.0/24 is subnetted, 1 subnets
C       21.21.21.0 is directly connected, FastEthernet0/1
     23.0.0.0/24 is subnetted, 1 subnets
C       23.23.23.0 is directly connected, Serial0/1
S    192.168.1.0/24 is directly connected, Serial0/1
Router#ping 10.1.1.100
 
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.1.1.100, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 6/9/13 ms
 
Router#ping 192.168.1.100
 
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.1.100, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 6/7/9 ms
 
Router#
 
 
 
Router 2 的配置:
Router>enable
Router#conf
Configuring from terminal, memory, or network [terminal]?
Enter configuration commands, one per line.  End with CNTL/Z.
Router(config)#int s0/0
Router(config-if)#ip add 23.23.23.3 255.255.255.0
Router(config-if)#no shutdown
 
%LINK-5-CHANGED: Interface Serial0/0, changed state to up
Router(config-if)#
%LINEPROTO-5-UPDOWN: Line protocol on Interface Serial0/0, changed state to up
Router(config-if)#int f0/0
Router(config-if)#ip add 192.168.1.1 255.255.255.0
Router(config-if)#no shutdown
 
%LINK-5-CHANGED: Interface FastEthernet0/0, changed state to up
%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0, changed state to up
Router(config-if)#exit
Router(config)#ip route 10.1.1.0 255.255.255.0 23.23.23.2
Router(config)#ip route 12.12.12.0 255.255.255.0 23.23.23.2
Router(config)#ip route 21.21.21.0 255.255.255.0 23.23.23.2
Router(config)#end
%SYS-5-CONFIG_I: Configured from console by console
Router#show ip route
Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP
       D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
       N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
       E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
       i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS inter area
       * - candidate default, U - per-user static route, o - ODR
       P - periodic downloaded static route
 
Gateway of last resort is not set
 
     10.0.0.0/24 is subnetted, 1 subnets
S       10.1.1.0 [1/0] via 23.23.23.2
     12.0.0.0/24 is subnetted, 1 subnets
S       12.12.12.0 [1/0] via 23.23.23.2
     21.0.0.0/24 is subnetted, 1 subnets
S       21.21.21.0 [1/0] via 23.23.23.2
     23.0.0.0/24 is subnetted, 1 subnets
C       23.23.23.0 is directly connected, Serial0/0
C    192.168.1.0/24 is directly connected, FastEthernet0/0
Router#ping 10.1.1.100
 
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.1.1.100, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 10/12/15 ms
 
Router#ping 10.1.1.1
 
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.1.1.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 6/8/11 ms
 
Router#