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78-5296-02 10/02/98 Hardware Description 1
Cisco 6200 User Guide 1-31
Table 1-11 SLC 8DMT LEDs
LED Color Condition Indicated
POWER Green The SLC is receiving power.
READY Green
Yellow
Off
The SLC is experiencing no problems.
At least one port on the SLC is in line test mode.
The SLC is not communicating with the MPC. This is the case when
• The SLC is initializing.
• The SLC has a hardware problem. If the READY LED is off for an extended
period when the POWER LED is on, see the Cisco 6200 User Guide for
instructions on troubleshooting the SLC.
PRIME Green The SLC is using the primary (A) bus to move information across the backplane.
SEC Green The SLC is using the secondary (B) bus to move information across the backplane.
(Redundant systems only.)
Ports 0 to 7 Green The following conditions exist:
• The port is receiving good signal levels (no loss of signal, or LOS) from the CPE.
• The port has frame alignment with the far end CPE (no loss of frame (LOF) or
severely errored frames (SEC)).
• The SLC has HEC alignment in the upstream direction.
• The modems on both sides have negotiated the loop rates.
The port LEDs remain lit (green) in the presence of occasional minor alarms.
Flashing
green
The port is enabled and is trying to communicate with the remote CPE. (That is, the
port is training or preparing to train.)
Off One of the following conditions exists:
• The port is experiencing an intrusive DMT hardware test.
• The port is disabled or is not configured.