Specifications

Waters Network Systems User’s Manual Page 51
PS-2126M-POE
In the 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 provides set up by IGMP Snooping to the IP multicast table based on
the user’s specific conditions. IGMP reports packets that meet the items that have been defined.
Figure 5.20 – Allowed Group
Parameter description:
IP Range:
The switch supports two options for managing a valid IP range: Any and Custom. The default
is Any. If Custom had been chosen, you can assign the effective IP range. The valid range is
224.0.0.0~239.255.255.255.