Zyxel VES-1616FE-55A [151/318] Multicast vlan overview

Zyxel VES-1616FE-55A [151/318] Multicast vlan overview
VES-1616FE-55A User’s Guide
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CHAPTER 20
Multicast VLAN
This chapter describes the Multicast VLAN screens.
20.1 Multicast VLAN Overview
Multicast VLAN allows one single multicast VLAN to be shared among different subscriber
VLANs on the network. This improves bandwidth utilization by reducing multicast traffic in
the subscriber VLANs and simplifies multicast group management.
When the VES-1616FE-55A forwards traffic to a subscriber port, it tries to forward traffic to a
normal PVC with the same VLAN ID. If this PVC does not exist, the VES-1616FE-55A uses
the super channel instead. This applies to all downstream traffic, not just multicast traffic.
It is suggested to use a super channel for multicast VLAN. If a normal PVC is used and the
multicast VLAN ID is not the same as the PVC’s VID, the VES-1616FE-55A does not
forward traffic to this PVC even if the subscriber’s port has joined the multicast VLAN.
Since the VES-1616FE-55A might change the subscribers VLAN ID to the multicast VLAN
ID, both the subscribers port and the Ethernet port should join the multicast VLAN.
20.2 MVLAN Status Screen
Use this screen to look at a summary of all multicast VLAN on the VES-1616FE-55A. To
open this screen, click Advanced Application > Multicast VLAN.
Figure 86 MVLAN Status

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