Hcip day 5

1、 The experimental requirements

1、R4 by ISP, All physical interfaces connected are public network segments , Arbitrarily specify ip that will do
2、R1-2-3 Build a star structure MGRE structure , among R1 For the center , hypothesis R1 Of public ownership ip Is a fixed address
3、R1-5-6 Build another fully connected mesh MGRE The Internet , among R1/5 All are central areas
4、 Use OSPF Realize the interworking of the whole private network , All at the same time PC Normal access R4 The loopback of

2、 The topology

3、 The analysis process

1、 Corresponding interface configuration IP
2、R1/2/3/5/6 Write the default point ISP, And then build MGRE
3、 Because building MGRE Will use Tunnel mouth , So use OSPF when , To put tunnel The mode of the port is changed to broadcast.
4、 Star shaped structures can produce DR Election issues , So will R2 and R3 The election priority of the interface is changed to 0
5、 Finally using NAT Technology enables private networks to access public networks .

4、 Configure the content

R1：

[r1]int g 0/0/0
[r1-GigabitEthernet0/0/0]ip add 41.1.1.1 24
[r1-GigabitEthernet0/0/0]int g 0/0/1
[r1-GigabitEthernet0/0/1]ip add 14.1.1.1 24
[r1-GigabitEthernet0/0/1]int g 0/0/2
[r1-GigabitEthernet0/0/2]ip add 192.168.1.1 24
[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]int Tunnel 0/0/0
[r1-Tunnel0/0/0]ip add 10.1.1.1 24
[r1-Tunnel0/0/0]tunnel-protocol gre p2mp
[r1-Tunnel0/0/0]source 14.1.1.1
[r1-Tunnel0/0/0]nhrp entry multicast dynamic
[r1-Tunnel0/0/0]nhrp network-id 100
[r1]int Tunnel 0/0/1
[r1-Tunnel0/0/1]ip add 11.1.1.1 24
[r1-Tunnel0/0/1]tunnel-protocol gre p2mp
[r1-Tunnel0/0/1]source g 0/0/0
[r1-Tunnel0/0/1]nhrp entry multicast dynamic
[r1-Tunnel0/0/1]nhrp network-id 200
[r1-Tunnel0/0/1]nhrp entry 11.1.1.2 54.1.1.5 register
[r1-Tunnel0/0/1]nhrp entry 11.1.1.3 64.1.1.6 register
[r1]ospf 1 router-id 1.1.1.1
[r1-ospf-1]area 0
[r1-ospf-1-area-0.0.0.0]network 192.168.1.0 0.0.0.255
[r1-ospf-1-area-0.0.0.0]network 10.1.1.0 0.0.0.255
[r1]int Tunnel 0/0/0
[r1-Tunnel0/0/0]ospf network-type broadcast
[r1]ospf 1 router-id 1.1.1.1
[r1-ospf-1]area 1
[r1-ospf-1-area-0.0.0.1]network 11.1.1.0 0.0.0.255
[r1]int Tunnel 0/0/1
[r1-Tunnel0/0/1]ospf network-type broadcast
[r1]acl 2000
[r1-acl-basic-2000]rule permit source any
[r1-acl-basic-2000]q
[r1]int g 0/0/0
[r1-GigabitEthernet0/0/0]nat outbound 2000
[r1-GigabitEthernet0/0/0]int g 0/0/1
[r1-GigabitEthernet0/0/1]nat outbound 2000

R2：

[r2]int g 0/0/0
[r2-GigabitEthernet0/0/0]ip add 24.1.1.2 24
[r2-GigabitEthernet0/0/0]int g 0/0/1
[r2-GigabitEthernet0/0/1]ip add 192.168.2.1 24
[r2]ip route-static 0.0.0.0 0 24.1.1.4
[r2]int Tunnel 0/0/0
[r2-Tunnel0/0/0]ip add 10.1.1.2 24
[r2-Tunnel0/0/0]tunnel-protocol gre p2mp
[r2-Tunnel0/0/0]source g0/0/0
[r2-Tunnel0/0/0]nhrp entry 10.1.1.1 14.1.1.1 register
[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]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-Tunnel0/0/0]ospf network-type broadcast
[r2-Tunnel0/0/0]ospf dr-priority 0
[r2]acl 2000
[r2-acl-basic-2000]rule permit source any
[r2-acl-basic-2000]q
[r2]int g 0/0/0
[r2-GigabitEthernet0/0/0]nat outbound 2000

R3：

[r3]int g 0/0/0
[r3-GigabitEthernet0/0/0]ip add 34.1.1.3 24
[r3-GigabitEthernet0/0/0]int g 0/0/1
[r3-GigabitEthernet0/0/1]ip add 192.168.3.1 24
[r3]ip route-static 0.0.0.0 0 34.1.1.4
[r3]int Tunnel 0/0/0
[r3-Tunnel0/0/0]ip add 10.1.1.3 24
[r3-Tunnel0/0/0]tunnel-protocol gre p2mp
[r3-Tunnel0/0/0]source g 0/0/0
[r3-Tunnel0/0/0]nhrp entry 10.1.1.1 14.1.1.1 register
[r3-Tunnel0/0/0]nh network-id 100
[r3]ospf 1 router-id 3.3.3.3
[r3-ospf-1]area 0
[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]network 192.168.3.0 0.0.0.255
[r3-Tunnel0/0/0]ospf network-type broadcast
[r3-Tunnel0/0/0]ospf dr-priority 0
[r3]acl 2000
[r3-acl-basic-2000]rule permit source any
[r3-acl-basic-2000]q
[r3]int g 0/0/0
[r3-GigabitEthernet0/0/0]nat outbound 2000

R4：

[ISP]int g 0/0/0
[ISP-GigabitEthernet0/0/0]ip add 41.1.1.4 24
[ISP-GigabitEthernet0/0/0]int g 0/0/1
[ISP-GigabitEthernet0/0/1]ip add 24.1.1.4 24
[ISP-GigabitEthernet0/0/1]int g 0/0/2
[ISP-GigabitEthernet0/0/2]ip add 34.1.1.4 24
[ISP-GigabitEthernet0/0/2]int g 4/0/2
[ISP-GigabitEthernet4/0/2]ip add 14.1.1.4 24
[ISP-GigabitEthernet4/0/2]int g 4/0/0
[ISP-GigabitEthernet4/0/0]ip add 64.1.1.4 24
[ISP-GigabitEthernet4/0/0]int g 4/0/1
[ISP-GigabitEthernet4/0/1]ip add 54.1.1.4 24
[ISP]int l0
[ISP-LoopBack0]ip add 4.4.4.4 24

R5：

[r5]int g 0/0/0
[r5-GigabitEthernet0/0/0]ip add 54.1.1.5 24
[r5-GigabitEthernet0/0/0]int g 0/0/1
[r5-GigabitEthernet0/0/1]ip add 192.168.4.1 24
[r5]ip route-static 0.0.0.0 0 54.1.1.4
[r5]int Tunnel 0/0/0
[r5-Tunnel0/0/0]ip add 11.1.1.2 24
[r5-Tunnel0/0/0]tunnel-protocol gre p2mp
[r5-Tunnel0/0/0]source g 0/0/0
[r5-Tunnel0/0/0]nhrp entry multicast dynamic
[r5-Tunnel0/0/0]nhrp network-id 200
[r5-Tunnel0/0/0]nhrp entry 11.1.1.1 41.1.1.1 register
[r5-Tunnel0/0/0]nhrp entry 11.1.1.3 64.1.1.6 register
[r5]ospf 1 router-id 5.5.5.5
[r5-ospf-1]area 1
[r5-ospf-1-area-0.0.0.1]network 192.168.4.0 0.0.0.255
[r5-ospf-1-area-0.0.0.1]network 11.1.1.0 0.0.0.255
[r5]int Tunnel 0/0/0
[r5-Tunnel0/0/0]ospf network-type broadcast
[r5]acl 2000
[r5-acl-basic-2000]rule permit source any
[r5-acl-basic-2000]q
[r5]int g 0/0/0
[r5-GigabitEthernet0/0/0]nat outbound 2000

R6：

[r6]int g 0/0/0
[r6-GigabitEthernet0/0/0]ip add 64.1.1.6 24
[r6-GigabitEthernet0/0/0]int g 0/0/1
[r6-GigabitEthernet0/0/1]ip add 192.168.5.1 24
[r6]ip route-static 0.0.0.0 0 64.1.1.4
[r6]int Tunnel 0/0/0
[r6-Tunnel0/0/0]ip add 11.1.1.3 24
[r6-Tunnel0/0/0]tunnel-protocol gre p2mp
[r6-Tunnel0/0/0]source g 0/0/0
[r6-Tunnel0/0/0]nhrp entry multicast dynamic
[r6-Tunnel0/0/0]nhrp network-id 200
[r6-Tunnel0/0/0]nhrp entry 11.1.1.1 41.1.1.1 register
[r6-Tunnel0/0/0]nhrp entry 11.1.1.2 54.1.1.5 register
[r6]ospf 1 router-id 6.6.6.6
[r6-ospf-1]area 1
[r6-ospf-1-area-0.0.0.1]network 11.1.1.0 0.0.0.255
[r6-ospf-1-area-0.0.0.1]network 192.168.5.0 0.0.0.255
[r6]int Tunnel 0/0/0
[r6-Tunnel0/0/0]ospf network-type broadcast
[r6]acl 2000
[r6-acl-basic-2000]rule permit source any
[r6-acl-basic-2000]q
[r6]int g 0/0/0
[r6-GigabitEthernet0/0/0]nat outbound 2000

5、 The results verify that

MGRE Established results

visit ISP The loopback of

Interworking of private networks