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Waters Network Systems
User’s Manual
Page 54
GSM-2116 and GSM-2124
Active:
In Active mode, IGMP snooping will periodically issue the Membership Query message
to all attached hosts and gather the membership report message to update the database
of the multicast table. This also reduces the unnecessary multicast traffic.
Passive:
In passive snooping mode, IGMP snooping will not periodically poll the hosts in the
groups. The switch will send a Membership Query message to all hosts only when it has
received a Membership Query message from a router.
IP Address:
Shows all multicast groups IP addresses that are registered on this device.
VLAN ID:
Shows VLAN ID for each multicast group.
Member Port:
Shows member ports that join each multicast group.
Function name:
Allowed Group
Function description:
The Allowed Group function allows the IGMP Snooping to set up the IP multicast table based on
user’s specific conditions. IGMP report packets that meet the identified items and will be joined to
form the multicast group.
Figure 5.26 – Allowed Group
Parameter description:
IP Range:
The switch supports two options for managed valid IP range, including
Any
and
Custom
.
Default is
Any
. If
Custom
is chosen, you can assign the effective IP range. The valid range is
224.0.0.0~239.255.255.255.
VID:
The switch supports two options for managed valid VLAN VID, including
Any
and
Custom
.
Default is
Any
. When you choose
Custom
, you can fill in VID number. The valid VID range is