S
C
WITCHING
OMMANDS
-
SWITCHPORT BLOCK UNICAST
FLOODING
switchport block unicast-flooding
Overview
Use this command to enable Unknown Unicast Flood Prevention (UUFP). The
UUFP feature prevents unknown unicast traffic from being flooded to all Layer 2
ports in a VLAN. When enabled, UUFP only permits egress traffic for MAC addresses
that are known to exist on the port.
Use the no variant of this command to disable UUFP.
switchport block unicast-flooding
Syntax
no switchport block unicast-flooding
Default
UUFP is off.
Mode
Interface Configuration for a switchport.
Example
To enable the UUFP feature on port1.0.3, use the commands:
awplus#
awplus(config)#
awplus(config-if)#
To disable the UUFP feature on port1.0.3, use the commands:
awplus#
awplus(config)#
awplus(config-if)#
To check if UUFP is enabled on port1.0.3, use the command:
awplus#
awplus#show interface port1.0.3
Interface port1.0.3
Scope: both
Link is UP, administrative state is UP
Thrash-limiting
Status Not Detected, Action learn-disable, Timeout 1(s)
Hardware is Ethernet, address is 0000.cd28.088a
index 5013 metric 1 mru 1500
current duplex full, current speed 1000, current polarity mdix
configured duplex auto, configured speed auto, configured polarity auto
SNMP link-status traps: Disabled
input packets 0, bytes 0, dropped 0, multicast packets 0
output packets 0, bytes 0, multicast packets 0, broadcast packets 0
input average rate : 30 seconds 0 bps, 5 minutes 0 bps
output average rate: 30 seconds 0 bps, 5 minutes 0 bps
Time since last state change: 0 days 00:00:35
Unknown unicast flooding blocking is enabled
C613-50631-01 Rev A
configure terminal
interface port1.0.3
switchport block unicast-flooding
configure terminal
interface port1.0.3
no switchport block unicast-flooding
show interface port1.0.3
Command Reference for IE340 Series
AlliedWare Plus™ Operating System - Version 5.5.3-0.x
621