Troubleshooting guide

Checking Physical Equipment
2-29
Port LEDs are grouped vertically. A number to the right each LED group indicates
the channel number associated with the group. The single downstream channel is
numbered 0 and the four upstream channels are numbered 0, 1, 2, 3. Table 2-5
describes the possible display states of these LEDs during operation.
OC3/OC12 POS Resource Module LEDs
The OC3/OC12 POS Resource Module has two groups of LEDs that indicate its
operational status:
• Module LEDs
• Per-Port LEDs
The following subsections describe the possible display states of these LED types.
Module LEDs
The OC3/OC12 POS Resource Module LEDs are visible on the module front
panel and are labeled: Fail, Status, and Alarm.
Table 2-5 BSR 64000 Downstream and Upstream Port LED Display States
Link Fail Interpretation
Green Off Normal operating status.
Green Red Operating with an alarm condition detected.
Note: An alarm condition detected for an individual port
also causes the System Alarm LED to light.
Off Red Failed port. Port is not operational.
Off Off Port is not configured.
Note: Check module LEDs to determine if the module is
receiving power.