Ruijie Reyee-Hotel Solution Cookbook Advanced Configuration
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Figure 4-2 User MAB (MAC Authentication ByPass) Online Flow
4.2 IPTV
4.2.1 Application Scenario
Internet Protocol television (IPTV) is a new technology that uses broadband cable
television network and integrates Internet, multimedia, communication, and other
technologies to provide home users with a variety of interactive services including digital
television.
The Internet Group Management Protocol (IGMP) snooping is an IP multicast snooping
mechanism running on a VLAN to manage and control the forwarding of IP multicast traffic
within the VLAN. It implements the L2 multicast function. Generally, multicast packets need
to pass through L2 switches, especially in some local area networks (LANs). When the Layer
2 switching device does not run IGMP Snooping, the IP multicast packets are broadcast in
the VLAN; when the Layer 2 switching device runs IGMP Snooping, the Layer 2 device can
snoop the IGMP protocol packets of the user host and the upstream PIM multicast device.
In this way, a Layer 2 multicast entry is established, and IP multicast packets are controlled
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