Alarms and Probable Causes B-1
Appendix B
Alarms and Probable Causes
This appendix describes alarm conditions and probable causes for the SmartEdge® 1200 chassis and cards
in the following sections:
• Chassis Alarms
• Traffic Card Alarms
• Controller Card Alarms
• Port Alarms
Table B-1 lists definitions of abbreviations found in the tables in this appendix.
Note In the descriptions that follow, the term, controller card, refers to any version of the
Cross-Connect Route Processor (XCRP) Controller card (XCRP, XCRP3, XCRP4), unless
otherwise noted.
The term, Gigabit Ethernet, applies to any Ethernet traffic card that supports a port speed of
1 Gbps or greater; unless explicitly stated, the speed of any Gigabit Ethernet port is 1 Gbps.
Table B-1 Definitions of Terms
Term Definition
ADM Add-drop multiplexer
AU-n Administrative unit, level n
BER Bit error rate
BIP Bit Interleaved Parity
BTC Bridging Transmission Convergence (a Redback
®
ASIC)
circuit pack Any traffic or controller card
DCC Data communications channel
FEAC Far end alarm condition
PLCP Physical Layer Convergence Protocol
TU-n Tributary unit, level n
VC-n Virtual container, level n
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