56. PIM Sparse Mode of Multicast configuration experiment uses Auto-RP to dynamically select RP
1. Auto-RP parsing
2. Experimental topology
3. Basic configuration
R1 configuration
Interface Loopback0
Ip address 1.1.1.1 255.255.255.0
Interface Serial0/1
Ip address 12.1.1.1 255.255.255.0
Interface Serial0/2
Ip address 14.1.1.1 255.255.255.0
Interface FastEthernet1/0
Ip address 13.1.1.1 255.255.255.0
Router ospf 110
Router-id 1.1.1.1
Network 1.1.1.0 0.0.0.255 area 0
Network 12.1.1.0 0.0.0.255 area 0
Network 13.1.1.0 0.0.0.255 area 0
Network 14.1.1.0 0.0.0.255 area 0
R2 configuration
Interface Loopback0
Ip address 2.2.2.2 255.255.255.0
Interface Serial0/0
Ip address 25.1.1.2 255.255.255.0
Interface Serial0/1
Ip address 12.1.1.2 255.255.255.0
Router ospf 110
Router-id 2.2.2.2
Network 2.2.2.0 0.0.0.255 area 0
Network 12.1.1.0 0.0.0.255 area 0
Default-information originate always
R3 configuration
Interface FastEthernet1/0
Ip address 13.1.1.3 255.255.255.0
Router ospf 110
Router-id 3.3.3.3
Network 13.1.1.0 0.0.0.255 area 0
R4 configuration
Interface Serial0/0
Ip address 46.1.1.4 255.255.255.0
Interface Serial0/2
Ip address 14.1.1.4 255.255.255.0
Router ospf 110
Router-id 4.4.4.4
Network 14.1.1.0 0.0.0.255 area 0
R5 configuration
Interface Serial0/0
Ip address 25.1.1.5 255.255.255.0
R6 configuration
Interface Serial0/0
Ip address 46.1.1.6 255.255.255.0
No ip routing
Ip default-gateway 46.1.1.4
4. Configure PIM Sparse Mode
R1 configuration
Ip multicast-routing
Interface Serial0/1
Ip pim sparse-mode
Interface Serial0/2
Ip pim sparse-mode
Interface FastEthernet1/0
Ip pim sparse-mode
R2 configuration
Ip multicast-routing
Interface Serial0/0
Ip pim sparse-mode
Interface Serial0/1
Ip pim sparse-mode
R3 configuration
Ip multicast-routing
Interface FastEthernet1/0
Ip pim sparse-mode
R4 configuration
Ip multicast-routing
Interface Serial0/0
Ip pim sparse-mode
Interface Serial0/2
Ip pim sparse-mode
R6 configuration
Interface Serial0/0
Ip igmp join-group 224.1.1.1
5. Auto-RP dynamic election RP
The following rules are required to configure Auto-RP
1. PIM mode should be configured as sparse-dense mode (when Sparse mode does not work, you can work in Dense mode to start backup redundancy)
2. CRP and MA usually use loop backports, which need to be entered into IGP.
3. The loop loop of MA should also be configured in sparese-dense mode.
Let's talk about R1 configured as CRP,R2 and configured as MA.
R1 configuration
Interface Loopback0
Ip pim sparse-dense-mode
Interface Serial0/1
Ip pim sparse-dense-mode
Interface Serial0/2
Ip pim sparse-dense-mode
Interface FastEthernet1/0
Ip pim sparse-dense-mode
Ip pim send-rp-announce loopback 0 scope 8
R2 configuration
Interface Loopback0
Ip pim sparse-dense-mode
Interface Serial0/0
Ip pim sparse-dense-mode
Interface Serial0/1
Ip pim sparse-dense-mode
Ip pim send-rp-discovery loopback 0 scope 8
R3 configuration
Interface FastEthernet1/0
Ip pim sparse-dense-mode
R4 configuration
Interface Serial0/0
Ip pim sparse-dense-mode
Interface Serial0/2
Ip pim sparse-dense-mode
