- Metrobility Optical System 8100 Managed Hub 10/100Mbps Installation & User Guide 8124-01-M, 8124-01-S, 8112-01-M, 8112-01-S

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 8112-01-M supports the Mini Console, switch
module installed LED, 12-10/100 ports, and 2-MDI-II ports.
The front panel for model 8124-01-M 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 Mbps Dual Speed Ethernet Hub
Switch Module
Installed
MDI-II 10/100 Mbps Dual Speed Ethernet 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
CenturyStack
®
8124-01-M
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ID
CenturyStack
®
8112-01-M
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Front Panel CenturyStack 8112-01-M (12 Port)
Front Panel CenturyStack 8124-01-M (24 Port)