3com 5000 ATM Manual Do Utilizador
6-4
C
HAPTER
6: T
ROUBLESHOOTING
Troubleshooting ATM
OC-3 Card LEDs
This section explains how to read the ATM OC-3 card LEDs and
determine appropriate corrective action
determine appropriate corrective action
The LEDs on the base module and ATM OC-3 cards function
independent of each other.
independent of each other.
Table 6-3 identifies possible causes and corrective actions for each LED
state.
state.
Table 6-3 ATM OC-3 Card LED Corrective Actions
LED
LED State
Possible Cause
Corrective Action
TX
Green
ATM signal detected.
None required.
Yellow
Transmitting ATM cells.
None required.
Off
Problem with ATM switch
connection (such as cable not
connected to ATM OC-3 card).
connection (such as cable not
connected to ATM OC-3 card).
Check ATM switch connection and
interface.
interface.
ATM OC-3 card failed.
If alternate ATM OC-3 card is installed,
check that switchover to alternate ATM
OC-3 card occurred.
check that switchover to alternate ATM
OC-3 card occurred.
RX
Green
ATM signal detected.
None required.
Yellow
Receiving ATM cells.
None required.
Off
Problem with ATM switch
connection (such as cable not
connected to ATM OC-3 card).
connection (such as cable not
connected to ATM OC-3 card).
Check ATM switch connection and
interface.
interface.
ATM OC-3 card failed.
If alternate ATM OC-3 card is installed,
check that switchover to alternate ATM
OC-3 card occurred.
check that switchover to alternate ATM
OC-3 card occurred.
ACTIVE
Green
Identifies active ATM OC-3
card.
card.
None required.
Off
ATM OC-3 card inactive.
If alternate ATM OC-3 card is installed,
check that an alternate ATM OC-3 card
is active.
check that an alternate ATM OC-3 card
is active.
ATM OC-3 card failed.
If alternate ATM OC-3 card is installed,
check that switchover to alternate ATM
OC-3 card occurred.
check that switchover to alternate ATM
OC-3 card occurred.
ALARM
Green
ATM OC-3 card failed.
If alternate ATM OC-3 card is installed,
check that a switchover to alternate
ATM OC-3 card occurred.
check that a switchover to alternate
ATM OC-3 card occurred.
Off
Normal operating condition.
None required.