19

Multicast VLAN

This chapter describes the Multicast VLAN screens.

19.1 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 IES-612-51A 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 IES-612-51A 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 IES-612-51A does not forward traffic to this PVC even if the subscriber’s port has joined the multicast VLAN.

Since the IES-612-51A might change the subscriber’s VLAN ID to the multicast VLAN ID, both the subscriber’s port and the Ethernet port should join the multicast VLAN.

19.2 MVLAN Status Screen

Use this screen to look at a summary of all multicast VLAN on the IES-612-51A. To open this screen, click Advanced Application, Multicast VLAN.

Figure 77 MVLAN Status

 

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IES-612-51A User’s Guide