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LEDs 43

Table 7

MDA LED indications

Label

Color State

Meaning

Green Steady Indicates network activity for the corresponding port.

A very low level of network activity (approximately

1–5 pps) can cause the LED to blink.

—

Off The port is not transmitting data (no network activity).

Amber Blinking The port is out of order; the administrative state is

down.

Green Blinking Indicates network activity for the corresponding port

(the port is receiving traffic).

Green Steady The port is operational; no network activity.

Amber Blinking The port is not operational; the administrative state

is down.

Amber Steady

A Remote Defect Indication (RDI) alarm condition

has been detected; the administrative state is down.

The RDI alarm condition indicates that a failure

occurred at the far end of the network. In ATM,

when the physical layer detects loss of signal or

cell synchronization, RDI cells are used to report a

VPC/VCC failure. RDI cells are sent upstream by a

VPC/VCC endpoint to notify the source VPC/VCC

endpoint of the downstream failure.

—

Off The port is not operational. Be sure that the MDA is

fully seated in the slot; check that the port is properly

configured.

Nortel Ethernet Routing Switch 8600

Installation — Media Dependent Adapters for the 8672ATME and 8672ATMM Modules

NN46205-316 01.01 Standard

30 May 2008

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Nortel Networks 8672ATMM Manual do Utilizador Página 43