Introduction 15
• Internal Switch (Bridge): The Internal Switch LED is
always on when the internal switch (bridge) function is
active and forwarding the data.
• External Switch (Bridge): The External Switch LED is on
when data is being forwarded from one segment to another
segment through the external switch port.
• Hub ID: Each linked hub is automatically assigned a hub
ID number and this number is indicated in the ID indicator.
Front Panel Overview: Master Units
The front panel for model LH8112A supports the Mini Console, switch
module installed LED, 12-10/100 ports, and 2-MDI-II ports.
The front panel for model LH8124A supports the Mini Console, switch
module installed LED, 24-10/100 ports, and 2-MDI-II ports.
The Switch Module Installed LED is on if a switch module is installed.
MDI-II MDI-II
1x 2x 3x 4x 5x 6x 9x8x7x 10x 11x 12x
13x 14x 15x 16x 17x 18x 21x20x19x 22x 23x 24x
10/100 Managed Hub
Switch Module
Installed
MDI-II
10/100 Managed Hub
MDI-II
1x 2x 3x 4x 5x 6x 9x8x7x 10x 11x 12x
Switch Module
Installed
Switch Module Installed LED
MDI-X Ports
MDI-II PortsConsole Keys
Mini Console
Hub ID
Prev
Next
Enter
ID
Prev
Next
Enter
ID
Front Panel 10/100 Managed Hub LH8112A (12 Port)
Front Panel 10/100 Managed Hub LH8124A (24 Port)
