Netgear XCM8806 - 8800 SERIES 6-SLOT CHASSIS SWITCH ユーザーズマニュアル

In this way, the communication between client 1 and client 2 is controlled. If client 1 needs to 
communicate with client 2 and has that IP address, client 1 sends out an ARP request to 
resolve the IP address for client 2. 

The following guidelines apply to enabling and disabling egress flooding:

Egress flooding can be disabled on ports that are in a load-sharing group. In a 

load-sharing group, the ports in the group take on the egress flooding state of the master 
port; each member port of the load-sharing group has the same state as the master port.

FDB learning takes place on ingress ports and is independent of egress flooding; either 

can be enabled or disabled independently.

Disabling unicast (or all) egress flooding to a port also prevents the flooding of packets 

with unknown MAC addresses to that port.

Disabling broadcast (or all) egress flooding to a port also prevents the flooding of 

broadcast packets to that port.

For NETGEAR 8800 switches, the following guidelines apply:

You can enable or disable egress flooding for unicast, multicast, or broadcast MAC 

addresses, as well as for all packets on one or more ports.

Disabling multicasting egress flooding does not affect those packets within an IGMP 

membership group at all; those packets are still forwarded out. 

If IGMP snooping is disabled, multicast packets with static FDB entries are forwarded 
according to the FDB entry.

To enable or disable egress flooding on NETGEAR 8800 switches, use the following 
commands:

enable flooding [all_cast | broadcast | multicast | unicast] ports [<port_list> 

| all]

disable flooding [all_cast | broadcast | multicast | unicast] ports [<port_list> 

| all]

Displaying Learning and Flooding Settings

To display the status of MAC learning and egress flooding, use the following commands:

show ports {mgmt | <port_list>} information {detail}

show vlan {detail {ipv4 | ipv6} | <vlan_name> {ipv4 | ipv6} | virtual-router 

<vr-router> | <vlan_name> stpd | security}

The flags in the command display indicate the status.