15.5.3 Example of Adaptive Network Configuration
- <Structure of this section>
(1) Configuration using PIM-SM
This configuration is appropriate in the following cases:
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The number of users sending multicast packets is not limited.
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The number of users sending multicast packets is large.
- Network environment
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The IP unicast routing protocol runs on all routers.
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PIM-SM is used as the multicast routing protocol between the Switches.
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IGMP is used for group management control between each group and the Switches.
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One switch is used as the rendezvous point and BSR.
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A static rendezvous point can be specified as the rendezvous point to reduce the time needed to determine the rendezvous point upon system startup.
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- Configuration diagram
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The following diagram shows a configuration.
Figure 15-26: Configuration Diagram Using PIM-SM ![[Figure Data]](./GRAPHICS/ZU313181.GIF)
(2) Configuration using PIM-SSM
This configuration is appropriate in the following cases:
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The number of users sending multicast packets is limited (such as for distribution servers).
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Broadband multicast communication is used.
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Multi-channel multicast communication is used.
- Network environment
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The IP unicast routing protocol runs on all routers.
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PIM-SSM is used as the multicast routing protocol between the Switches. PIM-SSM is extended PIM-SM functionality.
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To use IGMPv2 or IGMPv3 (in IGMPv2 or IGMPv3(EXCLUDE) for group management control between a group and the Switch, you need to configure the settings to operate SSM together.
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- Configuration diagram
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The following diagram shows a configuration.
Figure 15-27: Configuration Diagram Using PIM-SSM ![[Figure Data]](./GRAPHICS/ZU313182.GIF)