Switching
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XS728T ProSAFE 28-Port 10-Gigabit L2+ Smart Switch
IGMP Snooping Table
To view all of the entries in the Multicast Forwarding Database that were created for
IGMP snooping:
• Select Switching> Multicast > IGMP Snooping > IGMP Snooping Table.
The following table describes the fields in the IGMP Snooping Table..
IGMP Snooping VLAN Configuration
Use the IGMP Snooping VLAN Configuration screen to configure IGMP snooping settings for
VLANs on the system.
To configure IGMP snooping settings for VLANs:
1. Select Switching> Multicast > IGMP Snooping > IGMP Snooping VLAN
Configuration.
2. Select the VLAN ID and configure the IGMP Snooping values:
• Fast Leave Admin Mode. Enable or disable the IGMP snooping fast leave mode for
the specified VLAN ID. Enabling fast-leave allows the switch to immediately remove
the Layer 2 LAN interface from its forwarding table entry upon receiving an IGMP
leave message for that Multicast group without first sending out MAC-based general
queries to the interface. You should enable fast leave admin mode only on VLANs
where only one host is connected to each Layer 2 LAN port. This mode prevents the
inadvertent dropping of the other hosts that were connected to the same Layer 2 LAN
port but were still interested in receiving multicast traffic directed to that group. Also,
fast leave processing is supported only with IGMP version 2 hosts.
• Host Timeout. The value for group membership interval of IGMP snooping for the
specified VLAN ID. This value is calculated as follows: (Query Interval * 2) +
Maximum Response Time.
• Maximum Response Time. Enter the amount of time in seconds that a switch waits
after sending a query on the VLAN because it did not receive a report for a particular
Field Description
MAC Address A multicast MAC address for which the switch has forwarding and filtering
information. The format is six 2-digit hexadecimal numbers that are
separated by colons, for example, 01:00:5e:45:67:89.
VLAN ID A VLAN ID for which the switch has forwarding and filtering information.
Type This field displays the type of the entry. Static entries are configured by the
end user. Dynamic entries are added to the table as a result of a learning
process or protocol.
Description The text description of this multicast table entry. Possible values are
Management Configured, Network Configured, and Network Assisted.
Interface The list of interfaces that are designated for forwarding (Fwd) and filtering
(Flt) for the associated address.
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