Siemens S223 - Manual (Page 304)

UMN:CLI User Manual
SURPASS hiD 6615 S223/S323 R1.5
304 A50010-Y3-C150-2-7619
1. Multicast packet
transmitted to RP
(Rendezvous Point)
A
B
C
D E
F
2. Ask RP for
multicast packet
3. RP transmits multicast
packet for the request
RP
2. Ask RP for
multicast packet
3. RP transmits multicast
packet for the request
Fig. 9.5 RPT of PIM-SM
Also, routers on packet route automatically optimize route by deleting unnecessary hops
when traffic exceeds certain limit. After route to source and multicast group connected to
the source are constituted, all sources have route to connect to receiver directly.
In the below figure, packets are usually transmitted through『A→B→C→D』, but packets
are transmitted through faster route『A→C→F』when traffic is increased. SPT (Shortest-
Path Tree) selects the shortest route between source and receiver regardless of RP, it is
called source based tree or short path tree. SPT has (S, G) entry, “S” means source ad-
dress and “G” means multicast group.
1. Multicast packet
transmitted to RP
(Rendezvous Point)
D
A
C B
2. Ask RP for
multicast packet
3. RP transmits multicast
packet for the request
RP
E
F
4. Optimized route by deleting unnecessary
hops when traffic exceeds certain limit
Source
Fig. 9.6 STP of PIM-SM
9.3.1 PIM Common Configuration
Routing functionalities such as RIP, OSPF, BGP and PIM-SM are only available for hiD
6615 S323. (Unavailable for hiD 6615 S223)
!