路由汇总之EIGRP手动汇总

原创

zhutianss 2011-05-14 13:20:16 ©著作权

文章标签 EIGRP 汇总休闲 EIGRP路由协议 EIGRP路由协议汇总 文章分类 网络安全

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EIGRP路由手动汇总实验详细配置

实验拓扑图：

实验中I

实验中IP的规划以及子网汇总的计算：

假如公司申请到这样的IP地址：172.16.0.0 /16

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生产部有4000台主机

2n>=4000 n=12 32-12=20 240

网络地址:172.16.0.0

子网掩码:255.255.240.0

可用的IP地址:

172.16.0.1 - 172.16.15.254

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销售部有3000台主机

2n=>=3000 n=12 32-12=20 240

网络地址:172.16.16.0

子网掩码：255.255.240.0

可用的IP地址：

172.16.16.1 - 172.16.31.254

-----------------------------------------------------------------------------------------------------------------------------------------------------

技术部有2000台主机

2n>=2000 n=11 32-11=21 248

网络地址：172.16.32.0

子网掩码：255.255.248.0

可用IP地址：

172.16.32.1 - 172.16.39.254

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人事部有1000台主机

2n>=1000 n=10 32-10=22 252

网络地址：172.16.40.0

子网掩码：255.255.252.0

可用IP地址：

172.16.40.1 - 172.16.43.254

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路由器之间IP规划

R1<======>R5

网络地址：172.16.44.0

子网掩码：255.255.255.252

可用IP地址：172.16.44.1 - 172.16.44.2

R2<======>R5

网络地址：172.16.44.4

子网掩码：255.255.255.252

可用IP地址：172.16.44.5 - 172.16.44.6

R3<======>R5

网络地址：172.16.44.8

子网掩码：255.255.255.252

可用IP地址：172.16.44.9 - 172.16.44.10

R4<======>R5

网络地址：172.16.44.12

子网掩码：255.255.255.252

可用IP地址：172.16.44.13 - 172.16.44.14

R5<======>R6

网络地址：172.16.44.16

子网掩码：255.255.255.252

可用IP地址：172.16.44.17 - 172.16.44.18

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汇总地址计算：

172.16.0.0

10101100.00010000.00000000.00000000(汇总地址就是它前面有16位相同所以汇总IP地址为172.16.0.0 /16)

172.16.16.0

10101100.00010000.00010000.00000000

172.16.32.0

10101100.00010000.00100000.00000000

172.16.44.0

10101100.00010000.00101100.00000000

172.16.44.4

10101100.00010000.00101100.00000100

172.16.44.8

10101100.00010000.00101100.00001000

172.16.44.12

10101100.00010000.00101100.00001100

172.16.44.16

10101100.00010000.00101100.00010000

各个路由器的详细配置：

R1>en

R1#conf t

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

R1(config)#int f0/0

R1(config-if)#ip add 172.16.40.1 255.255.252.0

R1(config-if)#no shut

R1(config-if)#int s1/0

R1(config-if)#clock rate 128000

R1(config-if)#ip add 172.16.44.1 255.255.255.252

R1(config-if)#no shut

R1(config-if)#

R1(config)#router eigrp 1

R1(config-router)#no auto

R1(config-router)#do show ip int b

Interface IP-Address OK? Method Status Protocol

FastEthernet0/0 172.16.40.1 YES manual up up

Serial1/0 172.16.44.1 YES manual up up

Serial1/1 unassigned YES unset administratively down down

Serial1/2 unassigned YES unset administratively down down

Serial1/3 unassigned YES unset administratively down down

R1(config-router)#net 172.16.40.1 255.255.252.0

R1(config-router)#net 172.16.44.1 255.255.255.252

R1(config-router)#

*Mar 1 00:33:10.895: %DUAL-5-NBRCHANGE: IP-EIGRP(0) 1: Neighbor 172.16.44.2 (Serial1/0) is up: new adjacency

R2>en

R2#conf t

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

R2(config)#int f0/0

R2(config-if)#ip add 172.16.32.1 255.255.248.0

R2(config-if)#no shut

R2(config-if)#int s1/0

R2(config-if)#clock rate 128000

R2(config-if)#ip add 172.16.44.5 255.255.255.252

R2(config-if)#no shut

R2(config-if)#

R2(config-if)#exit

R2(config)#router eigrp 1

R2(config-router)#no auto

R2(config-router)#do show ip int b

Interface IP-Address OK? Method Status Protocol

FastEthernet0/0 172.16.32.1 YES manual up up

Serial1/0 172.16.44.5 YES manual up up

Serial1/1 unassigned YES unset administratively down down

Serial1/2 unassigned YES unset administratively down down

Serial1/3 unassigned YES unset administratively down down

R2(config-router)#net 172.16.32.1 255.255.248.0

R2(config-router)#net 172.16.44.5 255.255.255.252

R2(config-router)#

*Mar 1 00:32:24.679: %DUAL-5-NBRCHANGE: IP-EIGRP(0) 1: Neighbor 172.16.44.6 (Serial1/0) is up: new adjacency

R2(config-router)#

R3>en

R3#conf t

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

R3(config)#int f0/0

R3(config-if)#ip add 172.16.16.1 255.255.240.0

R3(config-if)#no shut

R3(config-if)#int s1/0

R3(config-if)#clock rate 128000

R3(config-if)#ip add 172.16.44.9 255.255.255.252

R3(config-if)#no shut

R3(config-if)#exit

R3(config)#router eigrp 1

R3(config-router)#no auto

R3(config-router)#do show ip int b

Interface IP-Address OK? Method Status Protocol

FastEthernet0/0 172.16.16.1 YES manual up up

Serial1/0 172.16.44.9 YES manual up up

Serial1/1 unassigned YES unset administratively down down

Serial1/2 unassigned YES unset administratively down down

Serial1/3 unassigned YES unset administratively down down

R3(config-router)#net 172.16.16.1 255.255.240.0

R3(config-router)#net 172.16.44.9 255.255.255.252

R3(config-router)#

*Mar 1 00:32:02.843: %DUAL-5-NBRCHANGE: IP-EIGRP(0) 1: Neighbor 172.16.44.10 (Serial1/0) is up: new adjacency

R3(config-router)#

R4>en

R4#conf t

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

R4(config)#int f0/0

R4(config-if)#ip add 172.16.0.1 255.255.240.0

R4(config-if)#no shut

R4(config-if)#int s1/0

R4(config-if)#clock rate 128000

R4(config-if)#ip add 172.16.44.13 255.255.255.252

R4(config-if)#no shut

R4(config-if)#

R4(config-if)#exit

R4(config)#do show ip int b

Interface IP-Address OK? Method Status Protocol

FastEthernet0/0 172.16.0.1 YES manual up up

Serial1/0 172.16.44.13 YES manual up up

Serial1/1 unassigned YES unset administratively down down

Serial1/2 unassigned YES unset administratively down down

Serial1/3 unassigned YES unset administratively down down

R4(config)#router eigrp 1

R4(config-router)#no auto

R4(config-router)#net 172.16.0.1 255.255.240.0

R4(config-router)#net 172.16.44.13 255.255.255.252

R4(config-router)#

*Mar 1 00:31:44.775: %DUAL-5-NBRCHANGE: IP-EIGRP(0) 1: Neighbor 172.16.44.14 (Serial1/0) is up: new adjacency

R4(config-router)#

R5>en

R5#conf t

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

R5(config)#int s1/0

R5(config-if)#ip add 172.16.44.2 255.255.255.252

R5(config-if)#no shut

R5(config-if)#int s1/1

R5(config-if)#ip add 172.16.44.6 255.255.255.252

R5(config-if)#no shut

R5(config-if)#int s1/2

R5(config-if)#ip add 172.16.44.10 255.255.255.252

R5(config-if)#no shut

R5(config-if)#int s1/3

R5(config-if)#ip add 172.16.44.14 255.255.255.252

R5(config-if)#no shut

R5(config-if)#int s0/0

R5(config-if)#clock rate 128000

R5(config-if)#ip add 172.16.44.17 255.255.255.252

R5(config-if)#no shut

R5(config-if)#

R5(config-if)#exit

R5(config)#router eigrp 1

R5(config-router)#no auto-summary （关闭自动汇总）

R5(config-router)#do show ip int b // 显示接口的一些简单信息

Interface IP-Address OK? Method Status Protocol

Serial0/0 172.16.44.17 YES manual up up

Serial0/1 unassigned YES unset administratively down down

Serial0/2 unassigned YES unset administratively down down

Serial0/3 unassigned YES unset administratively down down

Serial1/0 172.16.44.2 YES manual up up

Serial1/1 172.16.44.6 YES manual up up

Serial1/2 172.16.44.10 YES manual up up

Serial1/3 172.16.44.14 YES manual up up

R5(config-router)#net 172.16.44.2 255.255.255.252

R5(config-router)#net 172.16.44.6 255.255.255.252

R5(config-router)#net 172.16.44.10 255.255.255.252

R5(config-router)#net 172.16.44.14 255.255.255.252

R5(config-router)#net 172.16.44.17 255.255.255.252

R5(config-router)#

R5(config-if)#ip summary-address eigrp 1 172.16.0.0 255.255.0.0(手动汇总)

R5(config-if)#

R6>en

R6#conf t

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

R6(config)#int s0/0

R6(config-if)#ip add 172.16.44.18 255.255.255.252

R6(config-if)#no shut

R6(config-if)#do ping 172.

*Mar 1 00:22:46.475: %LINK-3-UPDOWN: Interface Serial0/0, changed state to up

R6(config-if)#do ping 172.16.

*Mar 1 00:22:47.479: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial0/0, changed state to up

R6(config-if)#do ping 172.16.44.17

Type escape sequence to abort.

Sending 5, 100-byte ICMP Echos to 172.16.44.17, timeout is 2 seconds:

!!!!!

Success rate is 100 percent (5/5), round-trip min/avg/max = 8/39/88 ms

R6(config-if)#

R6(config)#router eigrp 1

R6(config-router)#no auto

R6(config-router)#net 172.16.44.18 255.255.255.252

R6(config-router)#

*Mar 1 00:35:49.323: %DUAL-5-NBRCHANGE: IP-EIGRP(0) 1: Neighbor 172.16.44.17 (Serial0/0) is up: new adjacency

R6(config-router)#do show ip route

//这是没有汇总之前的路由表信息记录了每个网络的详细信息。
R6#show ip route

……………………………………. 省略内容

Gateway of last resort is not set

172.16.0.0/16 is variably subnetted, 2 subnets, 2 masks

C 172.16.44.16/30 is directly connected, Serial0/0

D 172.16.0.0/16 [90/2681856] via 172.16.44.17, 00:00:30, Serial0/0

//这是汇总之后的路由表信息，比之前的路由表小了很多，将所有网络都汇总到172.16.0.0 /16 这个地址上。减小了核心路由的负担提升了路由的性能

注意:不是所有的网络地址都能汇总，汇总是有规律的

由于本人水平有限讲述中难免出错请各位朋友指出来谢谢

Gateway of last resort is not set

172.16.0.0/16 is variably subnetted, 9 subnets, 4 masks

C 172.16.44.16/30 is directly connected, Serial0/0

D 172.16.44.0/30 [90/2681856] via 172.16.44.17, 00:00:12, Serial0/0

D 172.16.44.4/30 [90/2681856] via 172.16.44.17, 00:00:12, Serial0/0

D 172.16.40.0/22 [90/2684416] via 172.16.44.17, 00:00:12, Serial0/0

D 172.16.44.8/30 [90/2681856] via 172.16.44.17, 00:00:12, Serial0/0

D 172.16.44.12/30 [90/2681856] via 172.16.44.17, 00:00:12,Serial0/0

D 172.16.32.0/21 [90/2684416] via 172.16.44.17, 00:00:12, Serial0/0

D 172.16.16.0/20 [90/2684416] via 172.16.44.17, 00:00:12, Serial0/0

D 172.16.0.0/20 [90/2684416] via 172.16.44.17, 00:00:12, Serial0/0

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