Cisco 6200 User Manual

Page 31

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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.

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