6-6CHAPTER 6: INSTALLING AND SETTING UP THE MODULE

LED Summary

This section describes the LEDs that provide status and troubleshooting information. Table 6-1 lists the Switch LEDs, and Table 6-2 lists ATM Module LEDs.

Table 6-1LEDs on the Switch

LED Name

Color/State

Indicates

MGMT

Green

Switch and ATM Module are

(On the front of

 

operating normally.

the Switch)

Green

Switch or ATM Module is either

 

 

flashing

downloading software or initializing,

 

 

(which includes a Power On Self Test).

 

Yellow

Switch has failed its Power On Self

 

 

Test (POST)

 

Yellow

ATM Module failed its Power On Self

 

flashing

Test (POST).

 

OFF

No power to the Switch.

Module

Green

ATM port enabled; link present.

(On the front of

Green

ATM port disabled; link present.

the Switch)

 

flashing

 

 

Green

This LED will flash until all configured

 

(long on,

LECs have successfully joined their

 

short off)

ELANs.

 

Yellow

ATM agent software is not installed

 

 

correctly, or the ATM Module has

 

 

failed its POST (if the MGMT LED is

 

 

flashing yellow).

 

Yellow

Switch has not recognized the ATM

 

flashing

Module.

 

OFF

The ATM Module is not installed, or a

 

 

link is not present on the ATM port,

 

 

or the ATM Switch is not on.

Table 6-2LEDs on the ATM Module

LED Name

Color/State

Indicates

 

 

 

Far End Status

Green

The ATM Switch has not

(On ATM Module)

 

detected an error on the ATM

 

 

Module’s transmit link.

 

OFF

The ATM Switch at the far end

 

of the connection has detected a

 

(and Link

problem with the ATM Module’s

 

Status LED is

transmit connection, and

 

Green)

notified the ATM Module. For

 

 

example, the transmit half of the

 

 

ATM Module’s cable has been

 

 

disconnected at either the ATM

 

 

Module end or ATM Switch end

 

 

of the connection.

 

OFF

The cable between the ATM

 

Module and ATM Switch has

 

(and Link

been disconnected.

 

Status LED is

 

 

OFF)

 

 

 

 

Link Status

Green

A link is present on the ATM

(On ATM Module)

 

port, and the port is receiving

 

 

valid SONET frames.

 

OFF

The Link is not present on the

 

 

ATM Port.

 

 

 

TX

Yellow

The ATM port is transmitting

(On ATM Module)

 

Ethernet, LANE, Signalling or

 

 

control frames.

 

OFF

The ATM port is not

 

 

transmitting cells.

 

 

 

RX

Yellow

The ATM port is receiving data

(On ATM Module)

 

cells.

 

OFF

The ATM port is not receiving

 

 

incoming cells.

 

 

 

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IBM ATM OC-3c manual LED Summary