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【实验】配置浮动路由

2014-04-20 01:48 浏览:

  实验名称:配置浮动路由

  实验过程:

  步骤1:准备基本环境

  首先,打开Cisco Packet tracer。购买两台主机,两台交换机。两台路由器,并各自组成A、B网络,

  为主机A配置IP为192.168.1.1。主机B配置192.168.3.1。

  步骤2:配置路由器,是的两个网络可以ping通

  打开路由器A,进入

  Router>enable

  Router#configure terminal

  Enter configuration commands, one per line. End with CNTL/Z.

  Router(config)#interface fastethernet 0/0

  Router(config-if)#ip address 192.168.1.254 255.255.255.0

  Router(config-if)#no shutdown

  Router(config-if)#

  %LINK-5-CHANGED: Interface FastEthernet0/0, changed state to up

  %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0, changed state to up

  打开路由器B,

  Router>enable

  Router#configure terminal

  Enter configuration commands, one per line. End with CNTL/Z.

  Router(config)#interface fastethernet 0/0

  Router(config-if)#ip address 192.168.3.254 255.255.255.0

  Router(config-if)#no shutdown

  Router(config-if)#

  %LINK-5-CHANGED: Interface FastEthernet0/0, changed state to up

  %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0, changed state to up

  回到A配置与B路由器同一网段

  Router#

  Router#configure terminal

  Enter configuration commands, one per line. End with CNTL/Z.

  Router(config)#interface fastethernet 0/1

  Router(config-if)#ip address 192.168.2.1 255.255.255.0

  Router(config-if)#no shutdown

  Router(config-if)#

  %LINK-5-CHANGED: Interface FastEthernet0/1, changed state to up

  同样进入B

  Router#

  Router#configure terminal

  Enter configuration commands, one per line. End with CNTL/Z.

  Router(config)#interface fastethernet 0/1

  Router(config-if)#ip address 192.168.2.2 255.255.255.0

  Router(config-if)#no shutdown

  Router(config-if)#

  %LINK-5-CHANGED: Interface FastEthernet0/1, changed state to up

  %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/1, changed state to up

  这样就将两个路由器加入到同一网段。下面为路由表添加下一跳

  回到A

  Router#

  Router#configure terminal

  Enter configuration commands, one per line. End with CNTL/Z.

  Router(config)#ip route 192.168.3.0 255.255.255.0 192.168.2.2

  Router(config)#

  回到B

  Router#

  Router#configure terminal

  Enter configuration commands, one per line. End with CNTL/Z.

  Router(config)#ip route 192.168.1.0 255.255.255.0 192.168.2.1

  Router(config)#

  通过主机Aping主机B,

  C>ping 192.168.3.1

  Pinging 192.168.3.1 with 32 bytes of data:

  Reply from 192.168.3.1: bytes=32 time=0ms TTL=126

  Reply from 192.168.3.1: bytes=32 time=0ms TTL=126

  Reply from 192.168.3.1: bytes=32 time=0ms TTL=126

  Reply from 192.168.3.1: bytes=32 time=0ms TTL=126

  Ping statistics for 192.168.3.1:

  Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),

  Approximate round trip times in milli-seconds:

  Minimum = 0ms, Maximum = 0ms, Average = 0ms

  回到主机A查看IP信息,对设置进行保存

  C 192.168.1.0/24 is directly connected, FastEthernet0/0

  C 192.168.2.0/24 is directly connected, FastEthernet0/1

  S 192.168.3.0/24 [1/0] via 192.168.2.2

  Router#write

  Building configuration...

  [OK]

  Router#

  同样步骤到B

  S 192.168.1.0/24 [1/0] via 192.168.2.1

  C 192.168.2.0/24 is directly connected, FastEthernet0/1

  C 192.168.3.0/24 is directly connected, FastEthernet0/0

  Router#write

  Building configuration...

  [OK]

  Router#

  Router#

  步骤2:建立浮动路由

  由于之前已经做好保存,下面直接将路由器关机,购买一个MN-1FE-TX到路由器A B,为端口连线。

  开机

  进入路由器A

  Router(config)#interface fastethernet 1/0

  Router(config-if)#ip address 192.168.4.1 255.255.255.0

  Router(config-if)#no shutdown

  Router(config-if)#

  进入B

  outer>enable

  Router#configure terminal

  Enter configuration commands, one per line. End with CNTL/Z.

  Router(config)#interface fastethernet 1/0

  Router(config-if)#ip address 192.168.4.2 255.255.255.0

  Router(config-if)#no shutdown

  Router(config-if)#

  这样就连通了两个路由器,再回到A

  outer(config)#interface fastethernet 1/0

  Router(config-if)#ip address 192.168.4.1 255.255.255.0

  Router(config-if)#no shutdown

  Router(config-if)#exit

  Router(config)#

  Router(config)#ip route 192.168.3.0 255.255.255.0 192.168.4.2 50

  Router(config)#

  回到B,

  outer(config)#interface fastethernet 1/0

  Router(config-if)#ip address 192.168.4.2 255.255.255.0

  Router(config-if)#no shutdown

  Router(config-if)#exit

  Router(config)#

  Router(config)#ip route 192.168.1.0 255.255.255.0 192.168.4.1

  Router(config)#

  为了验证浮动路由的作用,下面我们将A路由器的2.0网段的网线剪断,在这之前先看一下A的路由表状态

  Gateway of last resort is not set

  C 192.168.1.0/24 is directly connected, FastEthernet0/0

  C 192.168.2.0/24 is directly connected, FastEthernet0/1

  S 192.168.3.0/24 [1/0] via 192.168.2.2

  C 192.168.4.0/24 is directly connected, FastEthernet1/0

  Router#

  下面剪断拔掉192.168.2.1的端口

  Router(config)#interface fastethernet 0/1

  Router(config-if)#shutdown

  Router(config-if)#

  %LINK-5-CHANGED: Interface FastEthernet0/1, changed state to administratively down

  %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/1, changed state to down

  Router(config-if)#

  再次进入查看路由

  C 192.168.1.0/24 is directly connected, FastEthernet0/0

  S 192.168.3.0/24 [50/0] via 192.168.4.2

  C 192.168.4.0/24 is directly connected, FastEthernet1/0

  Router#

  发现192.168.4.0段的路由开始生效,用主机Aping一下主机B。

  C>ping 192.168.3.1

  Pinging 192.168.3.1 with 32 bytes of data:

  Reply from 192.168.3.1: bytes=32 time=0ms TTL=126

  Reply from 192.168.3.1: bytes=32 time=0ms TTL=126

  Reply from 192.168.3.1: bytes=32 time=0ms TTL=126

  Reply from 192.168.3.1: bytes=32 time=0ms TTL=126

  Ping statistics for 192.168.3.1:

  Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),

  Approximate round trip times in milli-seconds:

  Minimum = 0ms, Maximum = 0ms, Average = 0ms

  没有任何问题,至此,浮动路由配置完成

  实验结果:本次实验其实没有什么难度的说,主要还是熟练,熟练了能分清楚各IP网段就好了。