GRE与MGRE综合实验-优快云博客

一、实验拓扑

二、实验要求

三、实验步骤

步骤一，配置IP地址

从PC1到PC4。。。

[R1]int g0/0/0
[R1-GigabitEthernet0/0/0]ip add 192.168.1.2 24
[R1-GigabitEthernet0/0/0]int s4/0/0
[R1-Serial4/0/0]ip add 15.1.1.1 24

[R2]int g0/0/0
[R2-GigabitEthernet0/0/0]ip add 192.168.2.2 24
[R2-GigabitEthernet0/0/0]int s4/0/1
[R2-Serial4/0/1]ip add 25.1.1.1 24

[R3]int g0/0/0
[R3-GigabitEthernet0/0/0]ip add 192.168.3.1 24
[R3-GigabitEthernet0/0/0]int s4/0/0
[R3-Serial4/0/0]ip add 35.1.1.1 24

[R4]int g0/0/1
[R4-GigabitEthernet0/0/1]ip add 192.168.4.2 24
[R4-GigabitEthernet0/0/1]int g0/0/0
[R4-GigabitEthernet0/0/0]ip add 45.1.1.1 24

[Huawei]sys R5
[R5]int s4/0/0
[R5-Serial4/0/0]ip add 15.1.1.5 24
[R5-Serial4/0/0]int s4/0/1
[R5-Serial4/0/1]ip add 25.1.1.5 24
[R5-Serial4/0/1]int s3/0/0
[R5-Serial3/0/0]ip add 35.1.1.5 24
[R5-Serial3/0/0]int g0/0/0
[R5-GigabitEthernet0/0/0]ip add 45.1.1.5 24

[R5]int l0
[R5-LoopBack0]ip add 5.5.5.5 24

步骤二，配缺省外网通

[R1]ip route-static 0.0.0.0 0 15.1.1.5

[R2]ip route-static 0.0.0.0 0 25.1.1.5

[R3]ip route-static 0.0.0.0 0 35.1.1.5

[R4]ip route-static 0.0.0.0 0 45.1.1.5

测试

步骤三，配认证

R1和R5使用PPP的PAP认证，R5主认证方

[R5]aaa
[R5-aaa]local-user xiaokeai password cipher 123456
Info: Add a new user.
[R5-aaa]local-user xiaokeai service-type ppp
[R5-aaa]int s4/0/0
[R5-Serial4/0/0]ppp authentication-mode pap

[R1]int s4/0/0
[R1-Serial4/0/0]ppp pap local-user xiaokeai password cipher 123456

R2和R5使用PPP的CHAP认证，R5主认证方

[R5]aaa
[R5-aaa]local-user xiaoke password cipher 123456
Info: Add a new user.
[R5-aaa]local-user xiaoke service-type ppp
[R5-aaa]q
[R5]int s4/0/1
[R5-Serial4/0/1]ppp authentication-mode chap

[R2]int s4/0/1
[R2-Serial4/0/1]ppp chap user xiaoke
[R2-Serial4/0/1]ppp chap password cipher 123456

R3和R5使用DHLC封装

[R5-Serial3/0/0]link-protocol hdlc

Y

[R3-Serial4/0/0]link-protocol hdlc

Y

步骤四，GRE与MGRE

R1，R2，R3之间建立MGRE

R1中心站点配置：

[R1]int t0/0/0 创建GRE随道接口
[R1-Tunnel0/0/0]ip add 10.1.2.1 24 配置IP
[R1-Tunnel0/0/0]tunnel-protocol gre p2mp 定义封装方式
[R1-Tunnel0/0/0]source 15.1.1.1 定义隧道被封装的源地址

创建NHRP域：

[R1-Tunnel0/0/0]nhrp network-id 100

R2分支站点配置：

[R2]int tunnel0/0/0
[R2-Tunnel0/0/0]ip add 10.1.2.2 24
[R2-Tunnel0/0/0]tunnel-protocol gre p2mp
[R2-Tunnel0/0/0]source Serial 4/0/1

[R2-Tunnel0/0/0]nhrp network-id 100 分站加入中心站点域
[R2-Tunnel0/0/0]nhrp entry 10.1.2.1 15.1.1.1 register 找中心要个身份

R3分支站点配置：

[R3]int t0/0/0
[R3-Tunnel0/0/0]ip add 10.1.2.3 24
[R3-Tunnel0/0/0]tunnel-protocol gre p2mp
[R3-Tunnel0/0/0]source s4/0/0

[R3-Tunnel0/0/0]nhrp network-id 100
[R3-Tunnel0/0/0]nhrp entry 10.1.2.1 15.1.1.1 register

R1与R4建立GRE

[R1]int t0/0/1
[R1-Tunnel0/0/1]ip add 10.1.1.1 24
[R1-Tunnel0/0/1]tunnel-protocol gre
[R1-Tunnel0/0/1]source 15.1.1.1
[R1-Tunnel0/0/1]description 45.1.1.1

[R4]int t0/0/1
[R4-Tunnel0/0/1]ip add 10.1.1.2 24
[R4-Tunnel0/0/1]tunnel-protocol gre
[R4-Tunnel0/0/1]source 45.1.1.2
[R4-Tunnel0/0/1]description 15.1.1.1

步骤五，RIP全网可达

[R1]rip 1
[R1-rip-1]ver 2
[R1-rip-1]undo summary
[R1-rip-1]network 10.0.0.0 A类主网地址
[R1-rip-1]n 192.168.1.0

[R2]rip 1
[R2-rip-1]v 2
[R2-rip-1]undo summary
[R2-rip-1]n 10.0.0.0
[R2-rip-1]n 192.168.2.0

[R3]rip 1
[R3-rip-1]v 2
[R3-rip-1]undo su
[R3-rip-1]n 10.0.0.0
[R3-rip-1]n 192.168.3.0

[R4]rip 4
[R4-rip-4]v 2
[R4-rip-4]undo su
[R4-rip-4]n 10.0.0.0
[R4-rip-4]n 192.168.4.0

在MGRE环境下使用RIP来获取未知网段的路由信息

1、只有中心获取到分支的路由信息，但是分支并没有获取到中心的路由信息；

解决方法：在中心上开启伪广播

[R1-Tunnel0/0/0]nhrp entry multicast dynamic

2、分支在中心开启伪广播后，分支只能获取到中心的路由信息，但是无法获取分支之间的路由信息；

解决方案：关闭接口的水平分割(中心和分支都做)

[R1-Tunnel0/0/0]undo rip split-horizon

测试PC1-PC2：

测试PC2-PC3：

步骤六

[R1]acl 2000
[R1-acl-basic-2000]rule permit source 192.168.1.0 0.0.0.255
[R1-acl-basic-2000]int s4/0/0
[R1-Serial4/0/0]nat outbound 2000

[R2]acl 2000
[R2-acl-basic-2000]rule permit source 192.168.2.0 0.0.0.255
[R2-acl-basic-2000]int s4/0/1
[R2-Serial4/0/1]nat o 2000

[R3]acl 2000
[R3-acl-basic-2000]rule p s 192.168.3.0 0.0.0.255
[R3-acl-basic-2000]int s4/0/0
[R3-Serial4/0/0]nat o 2000

[R4]acl 2000
[R4-acl-basic-2000]rule p s 192.168.4.0 0.0.0.255
[R4-acl-basic-2000]int g0/0/0
[R4-GigabitEthernet0/0/0]nat o 2000

测试