
1.R4为ISP,所链接的所有物理接口为公有网段,任意指定ip即可
2.R1-2-3 构建一个星形结构的MGRE结构,其中R1为中心点,假设R1的公有ip为固定地址
3.R1-5-6 构建另一个全连网状的MGRE网络,其中R1/5均为中心区域
4.使用OSPF实现整个私有网络的互通,同时所有Pc可以正常访问R4的环回
[R1]int g0/0/0
[R1-GigabitEthernete0/0/0]ip add
[R1-GigabitEthernete0/0/0]ip address 192.168.1.1 24
[R1-GigabitEthernete/e/0]q
[R1]int g0/0/2
[R1-GigabitEthernet0/0/2]ip add
[R1-GigabitEthernet0/0/2]ip address 14.1.1.1 24
[R1-GigabitEthernet0/0/2]q
[R1]int g0/0/1
[R1-GigabitEthernet0/0/1]ip add
[R1-GigabitEthernet0/0/1]ip address 41.1.1.1 24
[R1]ip rou
[R1]ip route-s
[R1]ip route-static 0.0.0.0 0 14.1.1.4
[R1]ip route-static 0.0.0.0 0 41.1.1.4
[R1]acl 2000
[R1-acl-basic-2000]rule 1 pe
[R1-acl-basic-2000]rule 1 permit so
[R1-acl-basic-2000]rule 1 permit source any
[R1-acl-basic-2000]int g0/0/2
[R1-GigabitEthernet0/0/2]nat out
[R1-GigabitEthernet0/0/2]nat outbound 2000
[R1-GigabitEthernet0/0/2]int g0/0/1
[R1-GigabitEthernet0/0/1]nat out
[R1-GigabitEthernet0/0/1]nat outbound 2000
[R1]int Tunnel 0/0/0
[R1-TunneL0/0/0]ip add
[R1-TunneL0/0/0]ip address 10.1.1.1 24
[R1-TunneL0/0/0]tu
[R1-TunneL0/0/0]tunnel-protocol gre p2mp
[R1-TunneL0/0/0]so
[R1-TunneL0/0/0]source 41.1.1.1
[R1-TunneL0/0/0]nhrp ent
[R1-TunneL0/0/0]nhrp entry mu
[R1-TunneL0/0/0]nhrp entry multicast dy
[R1-TunneL0/0/0]nhrp entry multicast dynamic
[R1-TunneL0/0/0]nhrp ne
[R1-TunneL0/0/0]nhrp network-id 100
[R1]ospf router-id 1.1.1.1
[R1-ospf-1]area 0
[R1-ospf-1-area-0.0.0.0]net
[R1-ospf-1-area-0.0.0.0]network 10.1.1.0 0.0.0.255
[R1-ospf-1-area-0.0.0.0]net
[R1-ospf-1-area-0.0.0.0]network 192.168.1.0 0.0.0.255
[R1]int Tunnel 0/0/0
[R1-TunneL0/0/0]ospf net
[R1-TunneL0/0/0]ospf network-type br
[R1-TunneL0/0/0]ospf network-type broadcast
[R1]int TunneL 0/0/1
[R1-TunneL0/0/1]ip add
[R1-TunneL0/0/1]ip address 10.1.2.1 24
[R1-TunneL0/0/1]tu
[R1-TunneL0/0/1]tunnel-protocol gre p2mp
[R1-TunneL0/0/1]so
[R1-TunneL0/0/1]source 14.1.1.1
[R1-TunneL0/0/1]nhrp entry mu
[R1-TunneL0/0/1]nhrp entry multicast d
[R1-TunneL0/0/1]nhrp entry multicast dynamic
[R1-TunneL0/0/1]nhrp n
[R1-TunneL0/0/1]nhrp network-id 101
[R1-TunneL0/0/1]q
[R1]int tu
[R1]int TunneL 0/0/1
[R1-TunneL0/0/1]nhrp en
[R1-TunneL0/0/1]nhrp entry 10.1.2.2 45.1.1.5 r
[R1-TunneL0/0/1]nhrp entry 10.1.2.2 45.1.1.5 register
[R1]ospf router-id 1.1.1.1
[R1-ospf-1]area 0
[R1-ospf-1-area-0.0.0.0]net
[R1-ospf-1-area-0.0.0.0]network 10.1.2.0 0.0.0.255
[R1]int TunneL 0/0/1
[R1-TunneL0/0/1]ospf n
[R1-TunneL0/0/1]ospf network-type b
[R1-TunneL0/0/1]ospf network-type broadcast
[R2]int g0/0/0
[R2-GigabitEthernet0/0/0]ip add
[R2-GigabitEthernet0/0/0]ip address 192.168.2.1 24
[R2-GigabitEthernet0/0/0]q
[R2]int g0/0/1
[R2-GigabitEtherne0/0/1]ip add
[R2-GigabitEthernet0/0/1]ip address 24.1.1.2 24
[R2]ip route-static 0.0.0.0 0 24.1.1.4
[R2]acL 2000
[R2-acl-basic-2000]rule 1 pe
[R2-acl-basic-2000]rule 1 permit so
[R2-acl-basic-2000]rule 1 permit source any
[R2-acl-basic-2000]int g0/0/1
[R2-GigabitEthernet0/0/1]nat ou
[R2-GigabitEthernet0/0/1]nat outbound 2000
[R2]int TunneL 0/0/0
[R2-TunneL0/0/0]ip ad
[R2-TunneL0/0/0]ip address 10.1.1.2 24
[R2-TunneL0/0/0]tu
[R2-TunneL0/0/0]tunnel-protocoL gre p2mp
[R2-TunneL0/0/0]sou
[R2-TunneL0/0/0]source g0/0/1
[R2-TunneL0/0/0]nhrp ent
[R2-TunneL0/0/0]nhrp entry 10.1.1.1 41.1.1.1 re
[R2-TunneL0/0/0]nhrp entry 10.1.1.1 41.1.1.1 register
[R2-TunneL0/0/0]nhrp ne
[R2-TunneL0/0/0]nhrp network-id 100
[R2]ospf 1 router-id 2.2.2.2
[R2-ospf-1]area 0
[R2-ospf-1-area-0.0.0.0]net
[R2-ospf-1-area-0.0.0.0]network 10.1.1.0 0.0.0.255
[R2-ospf-1-area-0.0.0.0]network 192.168.2.0 0.0.0.255
[R2]int Tunnel 0/0/0
[R2-TunneL0/0/0]ospf ne
[R2-TunneL0/0/0]ospf network-type b
[R2-TunneL0/0/0]ospf network-type broadcast
[R2]int TunneL 0/0/0
[R2-TunneL0/0/0]ospf dr
[R2-TunneL0/0/0]ospf dr-priority 0
[R3]int g0/0/0
[R3-GigabitEthernet0/0/0]ip add
[R3-GigabitEthernet0/0/0]ip address 192.168.3.1 24
[R3-GigabitEthernet0/0/0]q
[R3]int g0/0/1
[R3-GigabitEthernet0/0/1]ip add
[R3-GigabitEthernet0/0/1]ip address 34.1.1.3 24
[R3]ip route-static 0.0.0.0 0 34.1.1.4
[R3]acL 2000
[R3-acl-basic-2000]rule 1 pe
[R3-acl-basic-2000]rule 1 permit sou
[R3-acl-basic-2000]rule 1 permit source any
[R3-acl-basic-2000]int g0/0/1
[R3-GigabitEthernet0/0/1]nat out
[R3-GigabitEthernet0/0/1]nat outbound 2000
[R3]int Tunnel 0/0/0
[R3-TunneL0/0/0]ip ad
[R3-TunneL0/0/0]ip address 10.1.1.3 24
[R3-TunneL0/0/0]tu
[R3-TunneL0/0/0]tunnel-protocoL gre p2mp
[R3-TunneL0/0/0]sou
[R3-TunneL0/0/0]source g0/0/1
[R3-TunneL0/0/0]nhrp en
[R3-TunneL0/0/0]nhrp entry 10.1.1.1 41.1.1.1 re
[R3-TunneL0/0/0]nhrp entry 10.1.1.1 41.1.1.1 register
[R3-TunneL0/0/0]q
[R3]int TunneL 0/0/0
[R3-TunneL0/0/0]nhrp ne
[R3-TunneL0/0/0]nhrp network-id 100
[R3]ospf router-id 3.3.3.3
[R3-ospf-1]area 0
[R3-ospf-1-area-0.0.0.0]net
[R3-ospf-1-area-0.0.0.0]network 10.1.1.0 0.0.0.255
[R3-ospf-1-area-0.0.0.0]net
[R3-ospf-1-area-0.0.0.0]network 192.168.3.0 0.0.0.255
[R3]int Tunnel 0/0/0
[R3-TunneL0/0/0]ospf n
[R3-TunneL0/0/0]ospf network-type b
[R3-TunneL0/0/0]ospf network-type broadcast
[R3]int Tunnel 0/0/0
[R3-TunneL0/0/0]ospf d
[R3-TunneL0/0/0]ospf dr-priority 0
[R4]sysname ISP
[ISP]int g0/0/0
[ISP-GigabitEthernet0/0/0]ip add
[ISP-GigabitEthernet0/0/0]ip address 41.1.1.4 24
[ISP-GigabitEthernet0/0/0]q
[ISP]int g0/0/1
[ISP-GigabitEthernet0/0/1]ip add
[ISP-GigabitEthernet0/0/1]ip address 14.1.1.4 24
[ISP-GigabitEthernet0/0/1]q
[ISP]int g4/0/2
[ISP-GigabitEthernet4/0/2]ip add
[ISP-GigabitEthernet4/0/2]ip address 24.1.1.4 24
[ISP]int g4/0/1
[ISP-GigabitEthernet4/0/1]ip add
[ISP-GigabitEthernet4/0/1]ip address 34.1.1.4 24
[ISP-GigabitEthernet4/0/1]q
[ISP]int g4/0/0
[ISP-GigabitEthernet4/0/0]ip add
[ISP-GigabitEthernet4/0/0]ip address 46.1.1.4 24
[ISP-GigabitEthernet4/0/0]q
[ISP]int g0/0/2
[ISP-GigabitEthernet0/0/2]ip add
[ISP-GigabitEthernet0/0/2]ip address 45.1.1.1 24
[ISP]int LoopBack 0
[ISP-LoopBack0]ip add
[ISP-LoopBack0]ip address 4.4.4.4 24
[R5]int g0/0/0
[R5-GigabitEthernet0/0/0]ip add
[R5-GigabitEthernet0/0/0]ip address 192.168.4.1 24
[R5-GigabitEthernet0/0/0]q
[R5]int g0/0/1
[R5-GigabitEthernet0/0/1]ip add
[R5-GigabitEthernet0/0/1]ip address 45.1.1.5 24
[R5]ip route-static 0.0.0.0 0 45.1.1.4
[R5]acL 2000
[R5-acl-basic-2000]rule 1 pe
[R5-acl-basic-2000]rule 1 permit so
[R5-acl-basic-2000]rule 1 permit source any
[R5-acl-basic-2000]int g0/0/1
[R5-GigabitEthernet0/0/1]nat ou
[R5-GigabitEthernet0/0/1]nat outbound 2000
[R5]int Tunnel 0/0/1
[R5-TunneL0/0/1]ip add
[R5-TunneL0/0/1]ip address 10.1.2.224
[R5-TunneL0/0/1]tu
[R5-TunneL0/0/1]tunnel-protocoL gre p2mp
[R5-TunneL0/0/1]so
[R5-TunneL0/0/1]source 45.1.1.5
[R5-TunneL0/0/1]nhrp entry m
[R5-TunneL0/0/1]nhrp entry multicast d
[R5-TunneL0/0/1]nhrp entry multicast dynamic
[R5-TunneL0/0/1]nhrp n
[R5-TunneL0/0/1]nhrp network-id 101
[R5-TunneL0/0/1]q
[R5]int tu
[R5]int TunneL 0/0/1
[R5-TunneL0/0/1]nhrp ent
[R5-TunneL0/0/1]nhrp entry 10.1.2.1 14.1.1.1 r
[R5-TunneL0/0/1]nhrp entry 10.1.2.1 14.1.1.1 register
[R5]ospf 1 router-id 5.5.5.5
[R5-ospf-1]area 0
[R5-ospf-1-area-0.0.0.0]ne
[R5-ospf-1-area-0.0.0.0]network 10.1.2.0 0.0.0.255
[R5-ospf-1-area-0.0.0.0]network 192.168.4.0 0.0.0.255
[R5]int TunneL 0/0/1
[R5-TunneL0/0/1]ospf n
[R5-TunneL0/0/1]ospf network-type b
[R5-TunneL0/0/1]ospf network-type broadcast
[R6]int g0/0/0
[R6-GigabitEthernet0/0/0]ip add
[R6-GigabitEthernet0/0/0]ip address 192.168.5.1 24
[R6-GigabitEthernet0/0/0]int g0/0/1
[R6-GigabitEthernet0/0/1]ip add
[R6-GigabitEthernet0/0/1]ip address 46.1.1.6 24
[R6]ip route-static 0.0.0.0 0 46.1.1.4
[R6]acL 2000
[R6-acl-basic-2000]rule 1 pe
[R6-acl-basic-2000]rule 1 permit so
[R6-acl-basic-2000]rule 1 permit source any
[R6-acl-basic-2000]int g0/0/1
[R6-GigabitEthernet0/0/1]nat ou
[R6-GigabitEthernet0/0/1]nat outbound 2000
[R6]int Tunnel 0/0/1
[R6-TunneL0/0/1]ip add
[R6-TunneL0/0/1]ip address 10.1.2.3 24
[R6-TunneL0/0/1]tu
[R6-TunneL0/0/1]tunnel-protocoL gre p2mp
[R6-TunneL0/0/1]so
[R6-TunneL0/0/1]source g0/0/1
[R6-TunneL0/0/1]nhrp en
[R6-TunneL0/0/1]nhrp entry 10.1.2.1 14.1.1.1 r
[R6-TunneL0/0/1]nhrp entry 10.1.2.1 14.1.1.1 register
[R6-TunneL0/0/1]nhrp en
[R6-TunneL0/0/1]nhrp entry 10.1.2.2 45.1.1.5 r
[R6-TunneL0/0/1]nhrp entry 10.1.2.2 45.1.1.5 register
[R6-TunneL0/0/1]nhrp n
[R6-TunneL0/0/1]nhrp network-id 101
[R6]ospf 1 router-id 6.6.6.6
[R6-ospf-1]area 0
[R6-ospf-1-area-0.0.0.0]n
[R6-ospf-1-area-0.0.0.0]network 10.1.2.0 0.0.0.255
[R6-ospf-1-area-0.0.0.0]ne
[R6-ospf-1-area-0.0.0.0]network 192.168.5.0 0.0.0.255
[R6]int Tunnel 0/0/1
[R6-TunneL0/0/1]ospf n
[R6-TunneL0/0/1]ospf network-type b
[R6-TunneL0/0/1]ospf network-type broadcast
ping R4环回:
PC1:

PC2:

PC3:

PC4:

PC5:
