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T4000 LED Overview

Craft Interface LEDs

The craft interface displays system status messages and allows you to troubleshoot the router. See T4000 Craft Interface LEDs.

LEDs on the craft interface include:

Red and yellow alarm LEDs
FPC LEDs
Host subsystem LEDs
SIB LEDs

Component LEDs

The following LEDs are located on various router components and display the status of those components:

Control board LEDs
See T4000 LCC-CB Control Board LEDs
Routing Engine LEDs
See T4000 RE-C1800 LEDs.
PIC LEDs
See T4000 Core Router Interface Module Reference.
Power Supply LEDs
See T4000 Six-Input DC Power Supply LEDs.
SIB LEDs
See T4000 SIB LEDs.
SCG LEDs
See T4000 SONET Clock Generators (SCGs) LEDs.

Related Documentation