Black Box LGB1126A, LGB1148A, Managed Gigabit Switch, LGB1108A manual Configuration

Chapter 3: Configuration

Port Isolation

Port Isolation provides for an apparatus and method to isolate ports on Layer 2 switches on the same VLAN to restrict traffic flow. The apparatus comprises a switch having said plurality of ports, each port configured as a protected port or a non-protected port. An address table memory stores an address table having a destination address and port number pair. A forwarding map generator generates a forwarding map, which is responsive to a destination address of a data packet. The method for isolating ports on a Layer 2 switch comprises configuring each of the ports on the Layer 2 switch as a protected port or a non-protected port. A destination address on a data packet is matched with a physical address on that Layer 2 switch and a forwarding map is generated for the data packet based upon the destination address on the data packet. The data packet is then sent to the plurali- ty of ports pursuant to the forwarding map generated based upon whether the ingress port was configured as a protected or non-protected port.

This section describes how to enable and disable port isolation on ports in a Private VLAN. A port member of a VLAN can be isolated to other isolated ports on the same VLAN and Private VLAN.

Web Interface

To configure Port Isolation configuration in the Web interface:

1.Click VLAN, Port Isolation.

2.Check the box of the port for which you want to enable Port Isolation.

3.Click Save.

Figure 3-57. The Port Isolation Configuration screen.

Parameter Description

•Port Number: A checkbox is provided for each port of a private VLAN. When checked, port isolation is enabled on that port. When unchecked, port isolation is disabled on that port. By default, port isolation is disabled on all ports.

•Buttons:

-Save: Click to save changes.

-Reset: Click to undo any changes made locally and revert to previously saved values.

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