Netgear GS110TP GS108T/ GS110TP Smart Switch Software Administration Manual - Page 114

Switching, Multicast, IGMP Snooping, Table

Page 114 highlights

GS108T and GS110TP Smart Switch Software Administration Manual When a packet enters the switch, the destination MAC address is combined with the VLAN ID and a search is performed in the Layer 2 Multicast Forwarding Database. If no match is found, then the packet is either flooded to all ports in the VLAN or discarded, depending on the switch configuration. If a match is found, then the packet is forwarded only to the ports that are members of that multicast group. Use the MFDB Table page to view the port membership information for all active multicast address entries. The key for an entry consists of a MAC address. Entries may contain data for more than one protocol. To access the MFDB Table page, click Switching Multicast  IGMP Snooping  MFDB Table. The following table describes the fields in the MFDB Table. Field MAC Address VLAN ID Component Type Description The MAC Address to which the multicast MAC address is related. To search by MAC address, enter the address with the MFDB table entry you want displayed. Enter six two-digit hexadecimal numbers separated by colons, for example 00:0f:43:67:89:AB, and then click Go. If the address exists, that entry will be displayed. An exact match is required. The VLAN ID to which the multicast MAC address is related. This is the component that is responsible for this entry in the Multicast Forwarding Database. Possible values are IGMP Snooping or Static Filtering. This displays the type of the entry. Static entries are those that are configured by the end user. Dynamic entries are added to the table as a result of a learning process or protocol. Chapter 3: Configuring Switching Information | 47

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Chapter 3:
Configuring Switching Information
|
47
GS108T and GS110TP Smart Switch Software Administration Manual
When a packet enters the switch, the destination MAC address is combined with the VLAN
ID and a search is performed in the Layer 2 Multicast Forwarding Database. If no match is
found, then the packet is either flooded to all ports in the VLAN or discarded, depending on
the switch configuration. If a match is found, then the packet is forwarded only to the ports
that are members of that multicast group.
Use the MFDB Table page to view the port membership information for all active multicast
address entries. The key for an entry consists of a MAC address. Entries may contain data
for more than one protocol.
To access the MFDB Table page, click
Switching
Multicast
IGMP Snooping
MFDB
Table
.
The following table describes the fields in the MFDB Table.
Field
Description
MAC Address
The MAC Address to which the multicast MAC address is related.
To search by MAC address, enter the address with the MFDB table entry
you want displayed. Enter six two-digit hexadecimal numbers separated by
colons, for example 00:0f:43:67:89:AB, and then click
Go
. If the address
exists, that entry will be displayed. An exact match is required.
VLAN ID
The VLAN ID to which the multicast MAC address is related.
Component
This is the component that is responsible for this entry in the Multicast
Forwarding Database. Possible values are
IGMP Snooping
or
Static
Filtering
.
Type
This displays the type of the entry. Static entries are those that are
configured by the end user. Dynamic entries are added to the table as a
result of a learning process or protocol.