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Using the Centillion 50/100 ATMSpeed/155 Switch Modules and Media Dependent Adapters
The ATMSpeed/155 MDA MCP module also has three LEDs for the 10BASE-T
EThernet MCP port, as shown in
LED.
Diag
Activity
Link
Figure 2-27.
Table 2-2.
LED Name
RX
TX
L
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.
2-18
7882PEA
ATMSpeed/155 MDA MCP Module LEDs for the 10BASE-T
MCP Port
ATMSpeed/155 MDA MCP Module LED Definitions for the
10BASE-T MCP Port
Meaning
Turns on as packets are received on the port.
Turns on as packets are transmitted on the port.
Turns on when the 10BASE-T link is functioning correctly.
Figure
2-27.
Table 2-2
lists the meaning of each
893-01047-B
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