EIGRP+NAT协议综合配置实验

一、EIGRP基本配置实例

(1)网络拓扑

image-20220922220335655

(2)配置过程及配置代码

R0

!Router>
en
!Router#
conf t
!Router(config)#
no ip domain-lookup
hostname R0
!配置端口
int g0/0
ip addr 192.168.1.2 255.255.255.252
no shut
exit
int s0/0/0
ip addr 192.168.2.2 255.255.255.252
no shut
exit
!配置EIGRP
route eigrp 323
network 192.168.1.0
network 192.168.2.0
no auto-summary
exit

R1

!Router>
en
!Router#
conf t
!Router(config)#
no ip domain-lookup
hostname R1
!配置端口
int g0/0
ip addr 192.168.1.1 255.255.255.252
no shut
exit
int g0/1
ip addr 192.168.3.1 255.255.255.252
no shut
exit
int g0/2
ip addr 10.0.1.254 255.255.255.0
no shut
exit
!配置EIGRP
route eigrp 323
network 192.168.1.0
network 192.168.3.0
network 10.0.1.0
no auto-summary
exit

R2

!Router>
en
!Router#
conf t
!Router(config)#
no ip domain-lookup
hostname R2
!配置端口
int g0/1
ip addr 192.168.3.2 255.255.255.252
no shut
exit
int s0/0/1
ip addr 192.168.4.1 255.255.255.252
no shut
exit
!配置EIGRP
route eigrp 323
network 192.168.3.0
network 192.168.4.0
no auto-summary
exit

R3

!Router>
en
!Router#
conf t
!Router(config)#
no ip domain-lookup
hostname R3
!配置端口
int s0/0/0
ip addr 192.168.2.1 255.255.255.252
no shut
exit
int s0/0/1
ip addr 192.168.4.2 255.255.255.252
no shut
exit
int g0/2
ip addr 10.0.2.254 255.255.255.0
no shut
exit
!配置EIGRP
route eigrp 323
network 192.168.2.0
network 192.168.4.0
network 10.0.2.0
no auto-summary
exit

(3)配置结果验证及查看

R0

show ip eigrp neighbors

image-20220922221505186

show ip eigrp topology

image-20220922221558107

show ip route

image-20220922221642482

R1

show ip eigrp neighbors

image-20220922220827127

show ip eigrp topology

image-20220922221032955

show ip route

image-20220922221216120

R2

show ip eigrp neighbors

image-20220922221732286

show ip eigrp topology

image-20220922221806934

show ip route

image-20220922221853108

R3

show ip eigrp neighbors

image-20220922222111110

show ip eigrp topology

image-20220922222142936

show ip route

image-20220922222425564

(4)连通性测试

PC1->PC2

image-20220922222843292

image-20220922222941420


二、小型园区网 EIGRP 的配置

(1)网络拓扑

image-20220922224957244

(2)配置过程及过程

R1(DTE)

!Router>
en
!Router#
conf t
!Router(config)#
no ip domain-lookup
hostname R1
!配置端口
int s0/0/0
encapsulation ppp
ip addr 200.200.12.1 255.255.255.0
ip nat outside
no shut
exit
int g0/1
ip addr 192.168.12.1 255.255.255.0
ip nat inside
no shut
exit
int g0/2
ip addr 192.168.13.1 255.255.255.0
ip nat inside
no shut
exit
!配置默认路由
ip route 0.0.0.0 0.0.0.0 200.200.12.2
!配置 EIGRP
router eigrp 103
redistribute static
network 192.168.12.0
network 192.168.13.0
no auto-summary
exit
!配置 NAT
access-list 1 permit 192.168.0.0 0.0.255.255
ip nat pool pool1 200.200.12.10 200.200.12.15 netmask 255.255.255.0
ip nat inside source list 1 pool pool1

R2(DCE)

!Router>
en
!Router#
conf t
!Router(config)#
no ip domain-lookup
hostname R2
!配置端口
int s0/0/0
clock rate 2000000
encapsulation ppp
ip addr 200.200.12.2 255.255.255.0
no shut
exit
int loopback 0
ip addr 10.1.1.1 255.255.255.0
no shut
exit

SW1

!Switch>
en
!Switch#
conf t
!Switch(config)#
no ip domain-lookup
hostname SW1
!配置 VLAN
vlan 2
exit
vlan 3
exit
vlan 6
exit
!配置 VLAN IP
int vlan 2
ip addr 192.168.2.254 255.255.255.0
exit
int vlan 3
ip addr 192.168.3.254 255.255.255.0
exit
int vlan 6
ip addr 192.168.12.2 255.255.255.0
exit
!开启三层路由功能
ip routing
!配置三层路由聚合链路
int range f0/23-24
no switchport
channel-group 1 mode desirable
no ip addr
exit
int port-channel 1
ip addr 192.168.23.1 255.255.255.0
no shut
exit
!配置端口
int f0/1
switchport mode access
switchport access vlan 6
no shut
exit
int f0/2
switchport mode access
switchport access vlan 2
no shut
exit
int f0/3
switchport mode access
switchport access vlan 3
no shut
exit
!配置 EIGRP
router eigrp 103
network 192.168.2.0
network 192.168.3.0
network 192.168.12.0
network 192.168.23.0
no auto-summary
exit

SW2

!Switch>
en
!Switch#
conf t
!Switch(config)#
no ip domain-lookup
hostname SW2
!配置 VLAN
vlan 4
exit
vlan 5
exit
vlan 7
exit
!配置 VLAN IP
int vlan 4
ip addr 192.168.4.254 255.255.255.0
exit
int vlan 5
ip addr 192.168.5.254 255.255.255.0
exit
int vlan 7
ip addr 192.168.13.2 255.255.255.0
exit
!开启三层路由功能
ip routing
!配置三层路由聚合链路
int range f0/23-24
no switchport
channel-group 1 mode desirable
no ip addr
exit
int port-channel 1
ip addr 192.168.23.2 255.255.255.0
no shut
exit
!配置端口
int f0/2
switchport mode access
switchport access vlan 7
no shut
exit
int f0/4
switchport mode access
switchport access vlan 4
no shut
exit
int f0/5
switchport mode access
switchport access vlan 5
no shut
exit
!配置 EIGRP
router eigrp 103
network 192.168.4.0
network 192.168.5.0
network 192.168.13.0
network 192.168.23.0
no auto-summary
exit

(3)配置结果验证及查看

R1

show ip eigrp neighbors

image-20220922225933296

show ip eigrp topology

image-20220922230015717

show running-config

image-20220922232203756

image-20220922232501436

show ip route

image-20220922232556864

R2

show ip route

image-20220923115227037

SW1

show ip int br

image-20220923115357285

show running-config

image-20220923115650808

show ip route

image-20220923120254100

SW2

show ip int br

image-20220923120633037

show running-config

image-20220923120832728

show ip route

image-20220923121038679

(4)连通性测试

内网

PC2->PC3

image-20220923184641277

image-20220923184807197

PC2->PC4

image-20220923184902264

image-20220923185110685

PC2->PC5

image-20220923185214749

image-20220923185259356

外网

PC2->Loopback0

image-20220923185538308

image-20220923185928755


三、总结与体会

(1)、EIGRP 和 RIP、OSPF 路由协议的关系?

答:

三种路由协议均属于内部网关协议。

三种类型的动态路由协议分别采用不同的算法,RIP采用的算法是距离矢量算法、OSPF采用的算法是链路状态算法(SPF)、EIGRP所采用的算法是平衡混合算法。

RIP路由协议:内部网关协议,基于UDP协议,端口号为520

OSPF路由协议:内部网关协议,基于TCP/IP协议,端口号为89,区域概念有:主干区、标准区、存根区、完全存根区(Cisco概念)、不完全存根区、完全不完全存根区(Cisco概念)

EIGRP路由协议:增强内部网关路由协议,结合了链路状态和距离矢量型路由选择协议的优点,基于TCP/IP协议,端口号为88

(2)、如果有多条通过目的网络的路径,EIGRP 路由表中最后保留几个通往此目的网络的下一跳及路由条目?

答:

当有多条通过目的网络的路径时,会进行可行性条件(FC)判断:通告距离(AD)< 可行距离(FD),在满足可行性条件(FC)的网络路径中,选取通告距离(AD)最短的两条路径,第一条作为下一跳的路径,即后继(Successor),第二条作为可行后继(Feasible Successor),即备用路径,如果有通告距离(AD)相同的路径,则一起选为后续(Successor)作为等价负载均衡,所以EIGRP路由表中最后保留二个通往此目的网络的下一跳,即后继(Successor)和可行后继(Feasible Successor),其中后继(Successor)会写入路由表中,而可行后继则会作为备用路由写入拓扑表中

(3)、在非 Cisco 品牌的路由设备中能配置 EIGRP 协议吗?

答:

EIGRP是Cisco公司的私有协议(2013年已经公有化)

(4)、对比一下 EIGRP 比 RIP 和 OSPF 更灵活和更合理的地方。

答:

EIGRP路由协议结合了链路状态和距离矢量型路由选择协议的优点

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转载自blog.csdn.net/O_dysseus/article/details/127018212