ZyXEL ES-4124 User Guide - Page 178

Multicast Status, Multicast Setting

Page 178 highlights

Chapter 22 Multicast The Switch forwards multicast traffic destined for multicast groups (that it has learned from IGMP snooping or that you have manually configured) 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. 22.1.4 IGMP Snooping and VLANs The Switch can perform IGMP snooping on up to 16 VLANs. You can configure the Switch to automatically learn multicast group membership of any VLANs. The Switch then performs IGMP snooping on the first 16 VLANs that send IGMP packets. This is referred to as auto mode. Alternatively, you can specify the VLANs that IGMP snooping should be performed on. This is referred to as fixed mode. In fixed mode the Switch does not learn multicast group membership of any VLANs other than those explicitly added as an IGMP snooping VLAN. 22.2 Multicast Status Click Advanced Applications > Multicast to display the screen as shown. This screen shows the multicast group information. See Section 22.1 on page 177 for more information on multicasting. Figure 82 Advanced Application > Multicast The following table describes the labels in this screen. Table 54 Multicast Status LABEL DESCRIPTION Index This is the index number of the entry. VID This field displays the multicast VLAN ID. Port This field displays the port number that belongs to the multicast group. Multicast Group This field displays IP multicast group addresses. 22.3 Multicast Setting Click Advanced Applications > Multicast > Multicast Setting link to display the screen as shown. See Section 22.1 on page 177 for more information on multicasting. 178 ES-4124 User's Guide

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Chapter 22 Multicast
ES-4124 User’s Guide
178
The Switch forwards multicast traffic destined for multicast groups (that it has learned from
IGMP snooping or that you have manually configured) 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.
22.1.4
IGMP Snooping and VLANs
The Switch can perform IGMP snooping on up to 16 VLANs. You can configure the Switch to
automatically learn multicast group membership of any VLANs. The Switch then performs
IGMP snooping on the first 16 VLANs that send IGMP packets. This is referred to as auto
mode. Alternatively, you can specify the VLANs that IGMP snooping should be performed
on. This is referred to as fixed
mode. In fixed mode the Switch does not learn multicast group
membership of any VLANs other than those explicitly added as an IGMP snooping VLAN.
22.2
Multicast Status
Click
Advanced Applications
>
Multicast
to display the screen as shown. This screen shows
the multicast group information. See
Section 22.1 on page 177
for more information on
multicasting.
Figure 82
Advanced Application > Multicast
The following table describes the labels in this screen.
22.3
Multicast Setting
Click
Advanced Applications
>
Multicast
>
Multicast Setting
link to display the screen as
shown. See
Section 22.1 on page 177
for more information on multicasting.
Table 54
Multicast Status
LABEL
DESCRIPTION
Index
This is the index number of the entry.
VID
This field displays the multicast VLAN ID.
Port
This field displays the port number that belongs to the multicast group.
Multicast Group
This field displays IP multicast group addresses.