Cisco Catalyst 2900 XL Series Installation And Configuration Manual page 18

Physical Description
LED Description
The indicator on the front panel of the MM Fiber module illuminates in two-colors to
indicate the operating status of the module. The LED is described in Table 1-1.
Table 1-1
Color
Green
Flashing green
Amber
Off
1-6
Catalyst 2900 Series XL ATM Modules Installation and Configuration Guide
ATM 155 MM Fiber Module LED Description
Operating Status
The module port is connected to an operational ATM switch at the remote
end; it is steady when there is no activity.
The module is transmitting or receiving data. The LED flashes rapidly
when the traffic level is high.
The module is disabled because it did one of the following:
• Responded to an administrative action
• Encountered a secure address violation
• Failed the power-on self-test (POST)
The module is not connected to the ATM network of the Catalyst 2900
series switches or another ATM device.