Cisco 300 Series Cli Manual page 143
Stackable managed switches
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the ipv4 mode, because there is no overlapping of IPv4 Multicast addresses in
these modes.
For each Forwarding Data Base (FDB) mode, use different CLI commands to
configure static entries in the FDB, as described in the following table:
FDB Mode
mac-group
bridge multicast
address
ipv4-group
bridge multicast
ip-address
ipv4-src-group
bridge multicast
source group
The following table describes the actual data that is written to the Forwarding
Data Base (FDB) as a function of the IGMP version that is used in the network:
FDB mode
IGMP version 2
mac-group
MAC group
address
ipv4-group
IP group address
ipv4-src-group
(*)
(*) Note that (*,G) cannot be written to the FDB if the mode is ipv4-src-group. In that
case, no new FDB entry is created, but the port is added to the static (S,G) entries
(if they exist) that belong to the requested group. It is recommended to set the FDB
mode to ipv4-group or mac-group for IGMP version 2.
If an application on the device requests (*,G), the operating FDB mode is changed
to
ipv4-group.
Example
The following example configures the Multicast bridging mode as an mac-group
on VLAN 2.
switchxxxxxx(config)#
switchxxxxxx(config-if)#
CLI Commands
bridge multicast forbidden
address
bridge multicast forbidden
ip-addresss
bridge multicast forbidden
source group
IGMP version 3
MAC group address
IP group address
IP source and group addresses
interface vlan 2
bridge multicast mode mac-group
OL-32830-01 Command Line Interface Reference Guide
Address Table Commands
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