Avaya ATM Link Modules and Routing Engines in BN Platforms Manual de usuario descargar pdf (Pagina 42)

Installing ATM Link Modules and Routing Engines in BN Platforms

3-2

114951-B Rev 00

Figure 3-2. ARE SONET/SDH Link Module LEDs

Table 3-1 describes the LED functions, which are identical for the DS-3, E-3, and

SONET/SDH interface link modules.

Note that all LEDs light briefly during powerup, reset, and hot-swap of the link

module

Table 3-1. Functions of the DS-3, E-3, and SONET/SDH Link Module LEDs

LED Function

MODULE RESET Lights when the link module is resetting. During a hardware reset, the link module

returns to a known (inactive) state. The exception is the frame, which sources idle

cells and maintains SONET framing.

ATMC (ATM

Coprocessor)

RESET

Lights when the ATM Coprocessor (local microcontroller on the link module) is in

reset mode. This occurs during the upload of the driver code from the ARE to link

module memory.

SW LOAD Indicates that the driver code has been successfully loaded into link module memory,

and is ready to forward traffic. A blinking SW LOAD LED indicates a software fault.

TEST Indicates that the port is disabled or looped back.

RDI (Remote

Defect Indication)

Lights when the framer receives an indication that the far-end device has detected a

receive defect/failure or is unable to achieve frame synchronization. Note that the

LED is valid only when the driver software is running (in which case, the SW LOAD

LED is on).

LINK Indicates that SONET frame synchronization has been achieved. If the link module

detects a signal, but frame synchronization is not achieved, this LED blinks. If the link

module does not detect a signal, the LED remains off. This LED is valid only when

the driver software is running (in which case, the SW LOAD LED is on).

FAIL Lights when the link module fails diagnostics or bypasses diagnostics (as is the case

during the hot-swap procedure).

FAIL

ARE

SONET/SDH

MODULE

RESET

ATMC

RESET

LOAD

TEST

RDI

LINK

RECEIVE

TRANSMIT

ALM0006A

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