Dell PowerConnect 3424 User's Guide (.htm) - Page 324

Multicast Forwarding Support, Defining Multicast Global Parameters, interface ethernet, channel-group

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www.dell.com | support.dell.com Table 7-88. LAG Membership CLI Commands CLI Command Description channel-group port- Associates a port with a port-channel. Use the channel-number mode {on no form of this command to remove the | auto} channel-group configuration from the interface. show interfaces port-channel [port-channel-number] Displays port-channel information. 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: The system supports Multicast filtering for 256 Multicast groups. • 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

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324
Configuring Switch Information
www.dell.com | support.dell.com
The following is an example of the CLI commands:
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:
The system supports Multicast filtering for 256 Multicast groups.
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.
Table 7-88.
LAG Membership CLI Commands
CLI Command
Description
channel-group
port-
channel-number
mode
{
on
|
auto
}
Associates a port with a port-channel. Use the
no form of this command to remove the
channel-group configuration from the
interface.
show interfaces port-channel
[
port-channel-number
]
Displays port-channel information.
console(config)#
interface ethernet
1/e11
console(config-if)#
channel-group
1
mode on