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1 pim common configuration, Pim common configuration, Fig. 9.5 – Siemens S223 User Manual

Page 304: Rpt of pim-sm, Fig. 9.6, Stp of pim-sm

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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)

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