https://en.wikipedia.org/wiki/Protocol_Independent_Multicast
- PIM Sparse Mode (PIM-SM) explicitly builds unidirectional shared trees rooted at a rendezvous point (RP) per group, and optionally creates shortest-path trees per source. PIM-SM generally scales fairly well for wide-area usage.
Packetcapture when generating traffic from the Video Server (R1) to the multicast group address 224.3.2.1.
Connectivity via OSPF:
On all routers:
router ospf 1
network 0.0.0.0 255.255.255.255 area 0
R1#sh ip route
Codes: C - connected, S - static, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
E1 - OSPF external type 1, E2 - OSPF external type 2
i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2
ia - IS-IS inter area, * - candidate default, U - per-user static route
o - ODR, P - periodic downloaded static route
Gateway of last resort is not set
1.0.0.0/32 is subnetted, 1 subnets
O 1.1.1.1 [110/21] via 10.0.0.2, 00:14:46, FastEthernet0/0
20.0.0.0/24 is subnetted, 1 subnets
O 20.0.0.0 [110/20] via 10.0.0.2, 00:14:46, FastEthernet0/0
10.0.0.0/24 is subnetted, 1 subnets
C 10.0.0.0 is directly connected, FastEthernet0/0
30.0.0.0/24 is subnetted, 1 subnets
O 30.0.0.0 [110/30] via 10.0.0.2, 00:14:46, FastEthernet0/0
Multicast configuration:
On all routers: # Enable Multicast routing ip multicast-routing #Enable PIM Sparse-mode on the interfaces R1(config)#int fa0/0 R1(config-if)#ip pim sparse-mode R1(config)#int fa0/1 R1(config-if)#ip pim sparse-mode #Add RP address ip pim rp-address 1.1.1.1