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Using LEDs to Check FSIP Status
The following LED state descriptions include meanings for both DTE and DCE interfaces:
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•
•
•
Note
the three other LEDs are on to indicate data and timing signal traffic, or an idle pattern that is
commonly sent across the line during idle time.
Verify that the FSIP is connected correctly as follows:
Step 1
Step 2
Step 3
36 Fast Serial Interface Processor (FSIP) Installation and Configuration
RxC—On both DTE and DCE interfaces, this LED is on when the port is receiving an external
clock signal.
RxD—On both DTE and DCE interfaces, this LED is on when the port is receiving data signals
(packets) from the network. This LED is also on when it detects an idle pattern that is commonly
sent across the network during idle time.
TxC—On DTE interfaces, this LED is on when the port is receiving the TxC signal. On DCE
interfaces, it indicates that the DCE is sending the TxC signal to the DTE.
Conn—On both DTE and DCE interfaces, this LED is on to indicate normal operation: the FSIP
is properly connected to the external device, and DTE available (TA) and DCE available (CA)
are active. When this LED is off, the FSIP is in loopback mode or is not connected to the network
or external device.
The conn LED is on when the interface is connected to the network. During normal operation,
While the system reinitializes each interface, observe the console display messages and
verify that the system discovers the FSIP. The system should recognize the FSIP
interfaces but leave them configured as down.
When the reinitialization is complete, verify that the enabled LED on the FSIP is on and
remains on. If the LED does stay on, proceed to Step 5. If the enabled LED does not stay
on, proceed to the next step.
If the enabled LED on the FSIP fails to go on, suspect that the FSIP board connector is
not fully seated in the backplane. Loosen the captive installation screws, then firmly push
the ejector levers until both are parallel to the FSIP faceplate. Tighten the captive
installation screws. After the system reinitializes the interfaces, the enabled LED on the
FSIP should go on. If the enabled LED goes on, proceed to Step 5. If the enabled LED
does not go on, proceed to the next step.
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