[Cisco] Config Cisco Multipoint GRE tunnel

Dynamic GRE tunnels (point-to-multipoint)
[R1]--------------[R2]-----------------[R3]

[R1]
interface Loopback0
ip address 10.1.1.1 255.255.255.0
!
interface Loopback192
description ## private ip address ##
ip address 192.168.1.1 255.255.255.0
!
interface Tunnel1
ip address 172.16.0.1 255.255.255.0
no ip redirects
ip nhrp authentication CISCO
ip nhrp map multicast dynamic
ip nhrp network-id 99
no ip split-horizon
tunnel source Loopback0
tunnel mode gre multipoint
tunnel key 1
!
interface Serial1/0.12 point-to-point
ip address 10.3.12.1 255.255.255.0
frame-relay interface-dlci 102
!
router ospf 1
log-adjacency-changes
network 10.1.1.1 0.0.0.0 area 0
network 10.3.12.1 0.0.0.0 area 0
!
router rip
version 2
redistribute connected metric 2 route-map PRIVATE->RIP
network 172.16.0.0
no auto-summary
!
ip access-list standard PRIVATE_192
permit 192.168.1.0
!
!
route-map PRIVATE->RIP permit 10
match ip address PRIVATE_192

R1#sh ip route rip
10.0.0.0/8 is variably subnetted, 12 subnets, 2 masks
R 10.1.3.0/24 [120/2] via 172.16.0.3, 00:00:20, Tunnel1
R 10.1.2.0/24 [120/2] via 172.16.0.2, 00:00:06, Tunnel1
R 192.168.2.0/24 [120/2] via 172.16.0.2, 00:00:06, Tunnel1
R 192.168.3.0/24 [120/2] via 172.16.0.3, 00:00:20, Tunnel1

R1#sh ip route 192.168.3.1
Routing entry for 192.168.3.0/24
Known via "rip", distance 120, metric 2
Redistributing via rip
Last update from 172.16.0.3 on Tunnel1, 00:00:15 ago
Routing Descriptor Blocks:
* 172.16.0.3, from 172.16.0.3, 00:00:15 ago, via Tunnel1
Route metric is 2, traffic share count is 1

R1#ping 192.168.3.1 source 192.168.1.1

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.3.1, timeout is 2 seconds:
Packet sent with a source address of 192.168.1.1
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 16/29/52 ms

!------------------------------------------------------------------------------------------------------
[R2]
interface Loopback0
ip address 10.1.2.2 255.255.255.0
!
interface Loopback192
description ### private ip address ###
ip address 192.168.2.1 255.255.255.0
!
interface Tunnel0
ip address 172.16.0.2 255.255.255.0
no ip redirects
ip nhrp authentication CISCO
ip nhrp map 172.16.0.1 10.1.1.1
ip nhrp map multicast 10.1.1.1
ip nhrp network-id 99
ip nhrp nhs 172.16.0.1
ip nhrp registration timeout 180
tunnel source Loopback0
tunnel mode gre multipoint
tunnel key 1
!
interface Serial1/0.12 point-to-point
ip address 10.3.12.2 255.255.255.0
frame-relay interface-dlci 201
!
interface Serial1/0.23 point-to-point
ip address 10.3.23.2 255.255.255.0
frame-relay interface-dlci 203
!
router ospf 1
log-adjacency-changes
network 10.1.2.2 0.0.0.0 area 0
network 10.3.12.2 0.0.0.0 area 0
network 10.3.23.2 0.0.0.0 area 0
!
router rip
version 2
redistribute connected metric 2 route-map PRIVATE->RIP
network 172.16.0.0
no auto-summary
!
ip access-list standard PRIVATE_192
permit 192.168.2.0
!
route-map PRIVATE->RIP permit 10
match ip address PRIVATE_192

R2# sh ip route rip
10.0.0.0/8 is variably subnetted, 10 subnets, 2 masks
R 10.1.3.0/24 [120/3] via 172.16.0.3, 00:00:19, Tunnel0
R 192.168.1.0/24 [120/2] via 172.16.0.1, 00:00:19, Tunnel0
R 192.168.3.0/24 [120/3] via 172.16.0.3, 00:00:19, Tunnel0
!-------------------------------------------------------------------------------------------
[R3]
interface Loopback0
ip address 10.1.3.3 255.255.255.0
!
interface Loopback192
description ### private ip address ###
ip address 192.168.3.1 255.255.255.0
!
interface Tunnel0
ip address 172.16.0.3 255.255.255.0
no ip redirects
ip nhrp authentication CISCO
ip nhrp map 172.16.0.1 10.1.1.1
ip nhrp map multicast 10.1.1.1
ip nhrp network-id 99
ip nhrp nhs 172.16.0.1
ip nhrp registration timeout 180
tunnel source Loopback0
tunnel mode gre multipoint
tunnel key 1
!
interface Serial1/0.23 point-to-point
ip address 10.3.23.3 255.255.255.0
frame-relay interface-dlci 302
!
router ospf 1
log-adjacency-changes
network 10.1.3.3 0.0.0.0 area 0
network 10.3.23.3 0.0.0.0 area 0
!
router rip
version 2
redistribute connected metric 2 route-map PRIVATE->RIP
network 172.16.0.0
no auto-summary
!
ip access-list standard PRIVATE_192
permit 192.168.3.0
!
route-map PRIVATE->RIP permit 10
match ip address PRIVATE_192
!

R3#sh ip route rip
10.0.0.0/8 is variably subnetted, 10 subnets, 2 masks
R 10.1.2.0/24 [120/3] via 172.16.0.2, 00:00:00, Tunnel0
R 192.168.1.0/24 [120/2] via 172.16.0.1, 00:00:00, Tunnel0
R 192.168.2.0/24 [120/3] via 172.16.0.2, 00:00:00, Tunnel0
!---------------------------------------------------------------------------------------------