Chapter 3 Hardware Troubleshooting 21

LAN port LEDs

Each LAN port on the main unit and expansion unit has two LEDs. These LEDs indicate the status of the connection for that LAN port. The figure LAN port LED locations on page 21 shows the location of these LEDs on the main unit.

Figure 1 LAN port LED locations

LAN port

LAN port LEDs

LAN port

The table LAN port and expansion port LED indicators on page 21 describes the possible LED states for the LAN ports LEDs.

Table 2 LAN port and expansion port LED indicators

LED

Status

Description

 

 

 

Yellow (left

On

The LAN port is operating at 10 Mb/s.

LED)

 

 

 

 

 

 

Green (right

On

The LAN port is operating at 100 Mb/s.

LED)

 

 

Both LEDs

Off

No connection.

 

 

 

Any LED

Flashing

The LAN port is sending or receiving network data. The frequency of the flashes

 

 

increases with increased traffic.

 

 

 

Media bay module LEDs (expansion units only)

The two media bay module (MBM) LEDs on an expansion unit show the power and status of the

MBM. The figure MBM LEDs on page 22 shows the location of the (Power) and (Status) LEDs on an MBM. The power and status LEDs are in the same location on all MBMs.

BCM450 Troubleshooting Guide

Page 21
Image 21
Nortel Networks BM450 manual LAN port LED locations, Status Description