ZyXEL Communications ES 3500 Series Troubleshooting Manual page 52

Using CLI:
Figure 20 Enter CLI command "show igmp-snooping vlan"
If the switch is either using "Auto" or "Fixed" with the configured VLAN, proceed to
step 9.
If the switch has "Fixed" configured but did not configure the VLAN of multicast
clients, reconfigure and repeat step 4.
Are any of the port configured with an IGMP filtering profile?
By default, IGMP filtering is disabled. If the switch has IGMP filtering enabled and is
not using the default filtering profile, make sure that the ports are using an IGMP
filtering profile whose range matches the multicast addresses clients with issue will
need.
Figure 21
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