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Address Table Commands
78-20269-01 Command Line Interface Reference Guide
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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:
(*) 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 ipv4-group on
VLAN 2.
Console(config)#
interface vlan
2
Console(config-if)#
bridge multicast mode ipv4-group
27.3
bridge multicast address
Use the bridge multicast address Interface Configuration (VLAN) mode command
to register a MAC-layer multicast address in the bridge table and statically add or
remove ports to or from the group. Use the no form of this command to unregister
the MAC address.
Syntax
bridge multicast address {
mac-multicast-address} [[add | remove] {ethernet
interface-list
|
port-channel
port-channel-list
}]
no bridge multicast address {
mac-multicast-address
}
FDB mode
IGMP version 2
IGMP version 3
mac-group
MAC group
address
MAC group address
ipv4-group
IP group address
IP group address
ipv4-src-grou
p
(*)
IP source and group addresses