Full company mGRE and star topology mGRE

Experimental content ：

Experimental process ：

IP Address planning and configuration

 

 IP To configure （R4 For example ）

[r4]inter g0/0/0
[r4-GigabitEthernet0/0/0]ip add 21.1.1.2 24 
[r4-GigabitEthernet0/0/0]inter g2/0/0
[r4-GigabitEthernet2/0/0]ip add 12.1.1.2 24
[r4-GigabitEthernet2/0/0]inter g0/0/1
[r4-GigabitEthernet0/0/1]ip add 31.1.1.2 24
[r4-GigabitEthernet0/0/1]inter g0/0/2
[r4-GigabitEthernet0/0/2]ip add 41.1.1.2 24
[r4-GigabitEthernet0/0/2]inter g4/0/0
[r4-GigabitEthernet4/0/0]ip add 51.1.1.2 24
[r4-GigabitEthernet4/0/0]inter g3/0/0
[r4-GigabitEthernet3/0/0]ip add 61.1.1.2 24
[r4]int LoopBack 0
[r4-LoopBack0]ip add 2.2.2.2 24

  Configure each router to R4 Default , It's going on NAT address translation （ With R1 For example ）

[r1]ip router-static 0.0.0.0 0 21.1.1.2

[r1]acl 2000
[r1-acl-basic-2000]rule permit source any
[r1-acl-basic-2000]int g0/0/1
[r1-GigabitEthernet0/0/0]nat outbound 2000

build MGRE Environmental Science

R1\R2\R3 Star topology MGRE build （ With R1 Centered ）

R1:

[r1]inter t0/0/0
[r1-Tunnel0/0/0]ip add 10.1.1.1 24
[r1-Tunnel0/0/0]tunnel-protocol gre p2mp 
[r1-Tunnel0/0/0]source 21.1.1.1
[r1-Tunnel0/0/0]nhrp entry multicast dynamic  
[r1-Tunnel0/0/0]nhrp network-id 100

R2:

[r2]inter t0/0/0
[r2-Tunnel0/0/0]ip add 10.1.1.2 255.255.255.0
[r2-Tunnel0/0/0]tunnel-protocol gre p2mp 
[r2-Tunnel0/0/0]source 31.1.1.1
[r2-Tunnel0/0/0]nhrp network-id 100      
[r2-Tunnel0/0/0]nhrp entry 10.1.1.1 21.1.1.1 register 

R3:

[r3]inter t0/0/0
[r3-Tunnel0/0/0]ip add 10.1.1.3 255.255.255.0
[r3-Tunnel0/0/0]tunnel-protocol gre p2mp 
[r3-Tunnel0/0/0]source 41.1.1.1
[r3-Tunnel0/0/0]nhrp network-id 100
[r3-Tunnel0/0/0]nhrp entry 10.1.1.1 21.1.1.1 register 

Inquire about

 R1\R5\R6 The whole company MGRE build

R1:

[r1]inter t0/0/1
[r1-Tunnel0/0/1]ip add 10.1.2.1 24
[r1-Tunnel0/0/1]tunnel-protocol gre p2mp 
[r1-Tunnel0/0/1]source 12.1.1.1   
[r1-Tunnel0/0/1]nhrp entry multicast dynamic 
[r1-Tunnel0/0/1]nhrp network-id 110

R5：

[r5]inter t0/0/1
[r5-Tunnel0/0/1]ip add 10.1.2.2 24
[r5-Tunnel0/0/1]tunnel-protocol gre p2mp 
[r5-Tunnel0/0/1]source 61.1.1.1
[r5-Tunnel0/0/1]nhrp entry multicast dynamic 
[r5-Tunnel0/0/1]nhrp network-id 110

R6:

[r6]int t0/0/1
[r6-Tunnel0/0/1]ip add 10.1.2.3 24
[r6-Tunnel0/0/1]tunnel-protocol gre p2mp 
[r6-Tunnel0/0/1]source 51.1.1.1
[r6-Tunnel0/0/1]nhrp entry multicast dynamic 
[r6-Tunnel0/0/1]nhrp network-id 110

Register with each other

[r1-Tunnel0/0/1]nhrp entry 10.1.2.2 61.1.1.1 register 
[r1-Tunnel0/0/1]nhrp entry 10.1.2.3 51.1.1.1 register 

[r5-Tunnel0/0/1]nhrp entry 10.1.2.1 12.1.1.1 register 
[r5-Tunnel0/0/1]nhrp entry 10.1.2.3 51.1.1.1 register 

[r6-Tunnel0/0/1]nhrp entry 10.1.2.1 12.1.1.1 register 
[r6-Tunnel0/0/1]nhrp entry 10.1.2.2 61.1.1.1 register 

Inquire about

 oSPF Declare （ With R1 For example ）

[r1]ospf 1 router-id 1.1.1.1
[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-ospf-1-area-0.0.0.0]network 10.1.2.0 0.0.0.255

MGRE  oSPF Modification of interface working mode

take R1\R2\R3\ It is amended as follows p2mp type

[r1]int t0/0/0
[r1-Tunnel0/0/0]ospf network-type p2mp

take R1\R5\R6 It is amended as follows broadcast type

[r5]int t0/0/1
[r5-Tunnel0/0/1]ospf network-type broadcast 

Inquire about

  test

 

End of experiment