ZyXEL Communications VES-1616F-44, User Manual

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VES-1616F/1624F-44 User’s Guide
158 Chapter 22 Multicast
Without IGMP snooping, multicast traffic is treated in the same manner as broadcast traffic,
you can configure the switch to forward or discard unknown multicast group traffic. With
IGMP snooping, group multicast traffic is only forwarded to ports that are members of that
group. IGMP snooping generates no additional network traffic, allowing you to significantly
reduce multicast traffic passing through your switch.
22.2 Multicast Setup
Click Advanced Applications and Multicast to display the screen as shown. Use this screen
to enable and configure multicast settings on the switch and apply IGMP profiles to ports.
See Section 22.1 on page 157 for background information.
Figure 76 Multicast
The following table describes the labels in this screen.
Table 62 Multicast
LABEL DESCRIPTION
IGMP Snooping
Active Select Active to enable IGMP snooping to forward group multicast traffic only to
ports that are members of that group
802.1p Priority Select a priority level (0-7) to which the switch changes the priority in outgoing
IGMP control packets. Otherwise, select No-Change to not replace the priority.
IGMP Filtering Select Active to enable IGMP filtering to limit the IGMP groups a subscriber on a
port can join.