Cisco Systems WSC4500X16SFP Manual De Usuario

The interface can be a physical interface (for example, GigabitEthernet 1/1) or an EtherChannel 
group (such as port-channel 5). When you block multicast or unicast traffic for a port channel, it is 
blocked on all ports in the port channel group.

To disable the flooding of multicast and unicast packets to an interface, perform this task:

This example shows how to block unicast and multicast flooding on a GigabitEthernet interface1/1 and 
how to verify the configuration:

Switch# configure terminal

Switch(config)# interface gigabitethernet1/1

Switch(config-if)# switchport block multicast

Switch(config-if)# switchport block unicast

Switch(config-if)# end

Switch# show interface gigabitethernet1/1 switchport

Name: Gi1/3

Switchport: Enabled

<output truncated>

Port Protected: On

Unknown Unicast Traffic: Not Allowed

Unknown Multicast Traffic: Not Allowed

Broadcast Suppression Level: 100

Multicast Suppression Level: 100

Unicast Suppression Level: 100 

Switch# configure terminal

Enters global configuration mode.

Switch(config)# interface

 interface-id

Enters interface configuration mode and enter the type and 
number of the switchport interface (for example, 
GigabitEthernet 1/1).

Switch(config-if)# switchport block 

Blocks unknown multicast forwarding to the port.

Switch(config-if)# switchport block unicast

Blocks unknown unicast forwarding to the port.

Switch(config)# end

Returns to privileged EXEC mode.

Switch# 

interface-id switchport

Verifies your entry.

Switch# copy running-config startup-config

(Optional) Saves your entries in the configuration file.