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ITAA工程师 发表于 2008-2-16 15:35

实验:浮动静态路由

[size=2]实验：浮动静态路由[/size]

[size=2]在看np的高级路由的时候书中有一个浮动静态路由的实验，我用远程的台子做了一下这个实验。[/size]

[size=2]拓扑图[/size]

[size=2]                               (r2)
                                /     
                              /   ;      
                            /     ;         
                         (r1)--------(r3)[/size]

[size=2]r1 s1/0:1.1.1.1/24 s2/0:10.1.1.1/24[/size]

[size=2]r2 s1/0:2.2.2.2/24 s2/0:1.1.1.2/24[/size]

[size=2]r3 s1/0:10.1.1.3/24 s2/0:2.2.2.3/24[/size]

[size=2]配置如下：[/size]

[size=2]r1[/size]

[size=2]hostname 1
!
interface Serial1/0
ip address 1.1.1.1 255.255.255.0
clockrate 64000
!
interface Serial2/0
ip address 10.1.1.1 255.255.255.0
!
ip route 2.0.0.0 255.0.0.0 10.1.1.3[/size]

[size=2]r2[/size]

[size=2]hostname 2
!
interface Serial1/0
ip address 2.2.2.2 255.255.255.0
clockrate 64000
!
interface Serial2/0
ip address 1.1.1.2 255.255.255.0
!
ip route 10.0.0.0 255.0.0.0 1.1.1.1
[color=#660000]ip route 10.0.0.0 255.0.0.0 2.2.2.3 10       /手动添加的一条浮动路由，管理距离为10/[/color][/size]

[size=2]r3[/size]

[size=2]hostname 3
!
interface Serial1/0
ip address 10.1.1.3 255.255.255.0
clockrate 64000
!
interface Serial2/0
ip address 2.2.2.3 255.255.255.0
!
ip classless
ip route 1.0.0.0 255.0.0.0 10.1.1.1[/size]

[size=2]我从r2上ping10.1.1.3,为了更好的看效果我添加了访问控制列表。[/size]

[size=2]r2的路由表:
2#show ip route [/size]

[size=2]     1.0.0.0/24 is subnetted, 1 subnets
C       1.1.1.0 is directly connected, Serial2/0
     2.0.0.0/24 is subnetted, 1 subnets
C       2.2.2.0 is directly connected, Serial1/0
S    10.0.0.0/8[color=#330000] [/color][color=#660000][1/0] [/color]via 1.1.1.1
2(config)#access-list 101 permit ip host 1.1.1.2 host 10.1.1.3
2(config)#access-list 101 permit ip any
2#debug ip pac 101
debug输出为:
*Jul 28 06:51:20.367: IP: s=1.1.1.2 (local), d=10.1.1.3 (Serial2/0), len 100, sending
*Jul 28 06:51:20.407: IP: s=10.1.1.3 (Serial2/0), d=1.1.1.2 (Serial2/0), len 100, rcvd 3
*Jul 28 06:51:20.407: ICMP: echo reply rcvd, src 10.1.1.3, dst 1.1.1.2
*Jul 28 06:51:20.435: IP: s=1.1.1.2 (local), d=10.1.1.3 (Serial2/0), len 100, sending
*Jul 28 06:51:20.475: IP: s=10.1.1.3 (Serial2/0), d=1.1.1.2 (Serial2/0), len 100, rcvd 3
*Jul 28 06:51:20.475: ICMP: echo reply rcvd, src 10.1.1.3, dst 1.1.1.2
*Jul 28 06:51:20.487: IP: s=1.1.1.2 (local), d=10.1.1.3 (Serial2/0), len 100, sending
*Jul 28 06:51:20.527: IP: s=10.1.1.3 (Serial2/0), d=1.1.1.2 (Serial2/0), len 100, rcvd 3
*Jul 28 06:51:20.527: ICMP: echo reply rcvd, src 10.1.1.3, dst 1.1.1.2
*Jul 28 06:51:20.547: IP: s=1.1.1.2 (local), d=10.1.1.3 (Serial2/0), len 100, sending
*Jul 28 06:51:20.595: IP: s=10.1.1.3 (Serial2/0), d=1.1.1.2 (Serial2/0), len 100, rcvd 3
*Jul 28 06:51:20.595: ICMP: echo reply rcvd, src 10.1.1.3, dst 1.1.1.2
*Jul 28 06:51:20.615: IP: s=1.1.1.2 (local), d=10.1.1.3 (Serial2/0), len 100, sending
*Jul 28 06:51:20.675: IP: s=10.1.1.3 (Serial2/0), d=1.1.1.2 (Serial2/0), len 100, rcvd 3
*Jul 28 06:51:20.675: ICMP: echo reply rcvd, src 10.1.1.3, dst 1.1.1.2
注意到是从s2/0出去的.[/size]

[size=2]现在我们在r1上把s1/0shutdown掉[/size]

[size=2]r2的路由表:
2#show ip route
     2.0.0.0/24 is subnetted, 1 subnets
C       2.2.2.0 is directly connected, Serial1/0
S    10.0.0.0/8 [color=#ff0000][10/0] [/color]via 2.2.2.3[/size]

[size=2]r2上的访问控制列表为:
2(config)#access-list 102 permit ip host 1.1.1.2 host 10.1.1.3
2(config)#access-list 102 permit ip any
2#debug ip pac 102
debug输出为:
*Jul 28 06:58:22.775: IP: s=2.2.2.2 (local), d=10.1.1.3 (Serial1/0), len 100, sending
*Jul 28 06:58:22.815: IP: s=10.1.1.3 (Serial1/0), d=2.2.2.2 (Serial1/0), len 100, rcvd 3
*Jul 28 06:58:22.815: ICMP: echo reply rcvd, src 10.1.1.3, dst 2.2.2.2
*Jul 28 06:58:22.847: IP: s=2.2.2.2 (local), d=10.1.1.3 (Serial1/0), len 100, sending
*Jul 28 06:58:22.887: IP: s=10.1.1.3 (Serial1/0), d=2.2.2.2 (Serial1/0), len 100, rcvd 3
*Jul 28 06:58:22.887: ICMP: echo reply rcvd, src 10.1.1.3, dst 2.2.2.2
*Jul 28 06:58:22.907: IP: s=2.2.2.2 (local), d=10.1.1.3 (Serial1/0), len 100, sending
*Jul 28 06:58:22.947: IP: s=10.1.1.3 (Serial1/0), d=2.2.2.2 (Serial1/0), len 100, rcvd 3
*Jul 28 06:58:22.947: ICMP: echo reply rcvd, src 10.1.1.3, dst 2.2.2.2
*Jul 28 06:58:22.955: IP: s=2.2.2.2 (local), d=10.1.1.3 (Serial1/0), len 100, sending
*Jul 28 06:58:23.007: IP: s=10.1.1.3 (Serial1/0), d=2.2.2.2 (Serial1/0), len 100, rcvd 3
*Jul 28 06:58:23.007: ICMP: echo reply rcvd, src 10.1.1.3, dst 2.2.2.2
*Jul 28 06:58:23.015: IP: s=2.2.2.2 (local), d=10.1.1.3 (Serial1/0), len 100, sending
*Jul 28 06:58:23.067: IP: s=10.1.1.3 (Serial1/0), d=2.2.2.2 (Serial1/0), len 100, rcvd 3
*Jul 28 06:58:23.067: ICMP: echo reply rcvd, src 10.1.1.3, dst 2.2.2.2[/size]

[size=2]可以看出ping是从s1/0出去的,说明了浮动路由起了作用.[/size]

yonx 发表于 2008-2-16 21:28

好的:lol

mengcai101 发表于 2008-2-19 12:41

:victory: :victory: :handshake

wangjie24 发表于 2008-4-8 15:57

好东西,学习了!

data80 发表于 2008-4-10 15:27

rip和ospf怎么互联两个网断

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