Using the Centillion 50/100 ATMSpeed/155 Switch Modules and Media Dependent Adapters
2-18
893-01047-B
The ATMSpeed/155 MDA MCP module also has three LEDs for the 10BASE-T
EThernet MCP port, as shown in
Figure 2-27
.
Table 2-2
lists the meaning of each
LED.
Figure 2-27.
ATMSpeed/155 MDA MCP Module LEDs for the 10BASE-T
MCP Port
LED Sequence at Startup
At startup, all ATMSpeed/155 module LEDs turn on for 2 or 3 seconds. Then they
turn on and off in the following sequences, depending on the type of module.
On the ATMSpeed/155 MDA and MDA MCP modules with six LEDs per port,
the following sequence occurs:
•
The En LED turns on when the port is enabled through network management
software.
•
The LOS, LOF, and FERF LEDs turn off when valid SONET framing is
received on the port.
Table 2-2.
ATMSpeed/155 MDA MCP Module LED Definitions for the
10BASE-T MCP Port
LED Name
Meaning
RX
Turns on as packets are received on the port.
TX
Turns on as packets are transmitted on the port.
L
Turns on when the 10BASE-T link is functioning correctly.
Diag
Activity
Link
7882PEA
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