ZyXEL Communications VES-1616 manual Compatible mode, Join Operation, Leave Operation

ZyXEL VES-1616/24FA-5x Series Support Notes

port. Multicast router knows which multicast groups exist on which interface dynamically.

zCompatible mode

If we select the dynamic mode in MVR setting, IGMP report message transmitted from the receiver port will not be transmitted to a multicast router. Multicast router must be statically configured.

Operation Mode

zJoin Operation

A subscriber sends an IGMP report message to the switch to join the appropriate multicast. It tests whether the IGMP report matches the switch configured multicast MAC address. If matches, the switch CPU modifies the hardware address table to include this receiver port and VLAN as a forwarding destination of the MVLAN

zLeave Operation

Subscriber sends an IGMP leave message to the switch to leave the multicast. The switch CPU sends an IGMP group-specific query through the receiver port VLAN. If there is another subscriber in the VLAN, subscriber must respond within the max response time. If there is no subscriber, the switch eliminates this receiver port.

zImmediate Leave Operation

Subscriber sends an IGMP leave message to the switch to leave the multicast. Subscribers do not need to wait for the switch CPU to send an IGMP group-specific query through the receiver port VLAN. The switch will immediately eliminate this receiver port.

Scenario of MVR

In the following section, we will provide an example to illustrate how to configure MVR. In this scenario, the main job of media server is to transmit the media stream via port 10 to GS-4024. The multicast traffic flowing into the GS-4024 will be tagged with PVID=100. In the VES-1616F-3X, we enable the MVR function to allocate the multicast traffic from GS-4024 to separate VLAN hosts.

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