QTECH
Software Configuration Manual
4-63
There are two kinds of interfaces in port isolation function. One is uplink port, and the other is downlink
port. Uplink port can transmit any packet, but downlink port can only transmit the packet whose destination is uplink
port. Connect user’s computer to downlink port, and advanced devices connect to uplink port to shield
intercommunication bwtween users and not influence user accessing exterior network through advanced switching
devices.
Use port-isolation command in global configuration mode to add a or a group of descendent isolation port.
Use no port-isolation command to remove a or a group of descendent isolation port :
Add port isolation downlink port
port-isolation
{
interface-list
}
Delete port isolation downlink port
no port-isolation
{
interface-list
| all }
interface-list is the optioned interface list which means one or more Ethernet interfaces. When adding port
isolation downlink ports, not all ports can be added to be port isolation downlink ports. Choose all only when delete
port isolation downlink ports. Choose “all” to remove all downlink isolation ports. By default, all ports are port
isolation uplink ports.
For example :
! Add Ethernet 0/0/1, Ethernet 0/0/3, Ethernet 0/0/4, Ethernet 0/0/5, Ethernet 0/0/8 to be downlink isolation
port.
QTECH(config)#port-isolation ethernet 0/0/1 ethernet 0/0/3 to ethernet 0/0/5 ethernet 0/0/8
! Remove ethernet 0/0/3, Ethernet 0/0/4, Ethernet 0/0/5, ethernet 0/0/8 from downlink isolation port.
QTECH(config)#no port-isolation ethernet 0/0/3 to ethernet 0/0/5 ethernet 0/0/8
4.13 Strom control configuration
Restrict the speed rate of port receiving broadcast, known multicast/ unknown unicast packets by storm
control configuration.
Use storm-control command in interface configuration mode to configure storm-control. Use show interface
command to display storm-control information.
Configure the speed rate of storm control
storm-control rate
target-rate
Enable storm control
storm-control
{ broadcast | multicast | dlf }
Disable storm control
no storm-control
{ broadcast | multicast | dlf }
For example :
! Configure storm control of e0/0/1 with the speed rate being 2Mbps
QTECH(config-if-ethernet-0/0/1)#storm-control rate 2048
! Enable known multicast storm control of e0/0/1
QTECH(config-if-ethernet-0/0/1)#storm-control multicast
! Configure known multicast storm control of e0/0/3 with the speed rate being 5Mbps
QTECH(config-if-ethernet-0/0/3)#storm-control multicast 5120
