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Multicast forwarding allows the router to forward multicast traffic to networks where the multicast devices are listening. It blocks the forwarding of multicast traffic to networks where nodes are not listening. This page shows the configuration of ports and/or LAGs which are configured to get multicast streams from a particular VLAN. If this feature is disabled then this leads to flooding of Multicast traffic to ports in the switch.
This article explains the steps for the configuration of Forward All Multicast on Sx500 Series Stackable Switches.
• Sx500 Series Stackable Switches
Step 1. Log in to the web configuration utility and choose Multicast > Forward All. The Forward All page opens:
Step 2. Choose the ID of the VLAN you wish to filter from the VLAN ID drop-down list.
Note: A port can be configured manually to Forward All, if the devices connected to the port do not support Internet Group Management Protocol (IGMP) and/or Multicast Listener Discovery (MLD). IGMP or MLD messages are not forwarded to ports which are defined as Forward All. The configuration affects only the ports which are members of the selected VLAN.
Step 3. Choose the type of interface you wish to filter from the Interface Type drop-down list.
• Port — Indicates the individual ports of the switch.
• LAG — Indicates the Link Aggregation Group (LAG) of the switch. A LAG consists of a set of ports. The Forward All multicast if configured as LAG makes all ports within the LAG to be configured.
Step 4. Click Go which makes the status of ports/LAGs to be shown.
Step 5. Click the appropriate radio button to define each Port/LAG. The possible choices are:
• Static — Port receives all Multicast frames.
• Forbidden — Port cannot receive any multicast frames even though the IGMP/MLD snooping assigned the port to be a part of the Multicast group.
• None — Port is not a Forward All port at present.
Step 6. Click Apply to update the running configuration file.