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User Manual for the NETGEAR 7200 Series Layer 2 Managed Switch Software
7-40 Switching Commands
202-10010-01
config igmpsnooping interface mode
This command enables or disables IGMP Snooping on a selected interface. The <slot.port/all>
parameter identifies the interface on which to configure the mode. If an interface which has IGMP
Snooping enabled is enabled for routing or is enlisted as a member of a LAG, IGMP Snooping
functionality will be disabled on that interface. IGMP Snooping functionality will subsequently be
re-enabled if routing is disabled or LAG membership is removed from an interface that has IGMP
Snooping enabled.
Default disable
Format config igmpsnooping interface mode <slot.port/all> <enable/disable>
show mfdb table
This command displays the Multicast Forwarding Database (MFDB) information. If the command
is entered with no parameter, the entire table is displayed. This is the same as entering the optional
all parameter. The user can display the table entry for one MAC Address by specifying the MAC
address a an optional parameter.
Format show mfdb table [macaddr/all]
Mac Address A unicast MAC address for which the switch has forwarding and or filtering
information. The format is 6 or 8 two-digit hexadecimal numbers that are
separated by colons, for example 01:23:45:67:89:AB. In an IVL system the
MAC address will be displayed as 8 bytes. In an SVL system, the MAC address
will be displayed as 6 bytes.
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.
Component The component that is responsible for this entry in the Multicast Forwarding
Database. Possible values are IGMP Snooping, GMRP, and Static Filtering.
Description The text description of this multicast table entry.
Interfaces The list of interfaces that are designated for forwarding (Fwd:) and filtering
(Flt:).
Forwarding Interfaces The resultant forwarding list is derived from combining all the component’s
forwarding interfaces and removing the interfaces that are listed as the static
filtering interfaces.
show mfdb gmrp
This command displays the GARP Multicast Registration Protocol (GMRP) entries in the
Multicast Forwarding Database (MFDB) table.
Format show mfdb gmrp