Multicast Forwarding Support; Defining Multicast Global Parameters - Dell PowerConnect 3424 User Manual

Table 7-88. LAG Membership CLI Commands
CLI Command
channel-group port-
channel-number mode {on
| auto}
show interfaces port-channel
[port-channel-number]
The following is an example of the CLI commands:
console(config)# interface ethernet 1/e11
console(config-if)# channel-group 1 mode on

Multicast Forwarding Support

Multicast forwarding allows a single packet to be forwarded to multiple destinations. Layer 2
Multicast service is based on Layer 2 device receiving a single packet addressed to a specific
Multicast address. Multicast forwarding creates copies of the packet, and transmits the packets to
the relevant ports.
Registered Multicast traffic — If traffic addressed to a registered multicast group is seen it is
handled by an entry in the Multicast Filtering Database and forwarded only to the registered ports.
Unregistered Multicast traffic — If traffic addressed to an unregistered Multicast group is seen, it
is handled by a special entry in the Multicast Filtering Database. The default setting of this is to
flood all such traffic (traffic in unregistered Multicast groups).
The device supports:
• Forwarding L2 Multicast Packets — Forwards Layer 2 Multicast packets. Layer 2 Multicast
filtering is enabled by default, and not user-configurable.
NOTE:
• Filtering L2 Multicast Packets — Forwards Layer 2 packets to interfaces. If Multicast filtering
is disabled, Multicast packets are flooded to all relevant ports.
To open the Multicast Support page, click Switch → Multicast Support in the tree view.

Defining Multicast Global Parameters

Layer 2 switching forwards Multicast packets to all relevant VLAN ports by default, managing the
packet as a single Multicast transmission. While Multicast traffic forwarding is effective, it is not
optimal, as irrelevant ports also receive the Multicast packets. The excess packets cause increased
network traffic. Multicast forwarding filters enable forwarding of Layer 2 packets to port subsets.
324
Configuring Switch Information
Description
Associates a port with a port-channel. Use the
no form of this command to remove the
channel-group configuration from the
interface.
Displays port-channel information.
The system supports Multicast filtering for 256 Multicast groups.