ZyXEL Communications MES3500-24 User Manual

Chapter 24 Multicast

MES3500-24/24F User’s Guide

Throttling 

IGMP throttling controls how the Switch deals with the IGMP reports when the maximum 
number of the IGMP groups a port can join is reached. 

Select Deny to drop any new IGMP join report received on this port until an existing 
multicast forwarding table entry is aged out.

Select Replace to replace an existing entry in the multicast forwarding table with the new 
IGMP report(s) received on this port.

IGMP Filtering 
Profile

Select the name of the IGMP filtering profile to use for this port. Otherwise, select 
Default to prohibit the port from joining any multicast group. 

You can create IGMP filtering profiles in the Multicast > Multicast Setting > IGMP 
Filtering Profile screen.

IGMP Querier 
Mode

The Switch treats an IGMP query port as being connected to an IGMP multicast router (or 
server). The Switch forwards IGMP join or leave packets to an IGMP query port. 

Select Auto to have the Switch use the port as an IGMP query port if the port receives 
IGMP query packets.

Select Fixed to have the Switch always use the port as an IGMP query port. Select this 
when you connect an IGMP multicast server to the port.

Select Edge to stop the Switch from using the port as an IGMP query port. The Switch will 
not keep any record of an IGMP router being connected to this port. The Switch does not 
forward IGMP join or leave packets to this port. 

Apply

Click Apply to save your changes to the Switch’s run-time memory. The Switch loses 
these changes if it is turned off or loses power, so use the Save link on the top navigation 
panel to save your changes to the non-volatile memory when you are done configuring.

Cancel

Click Cancel to begin configuring this screen afresh.

Advanced Application > Multicast > Multicast Setting  (continued)