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INSTALLATION
2.10.4 Checking RI/RO Ports
This section describes how to check RI/RO ports. If problems are
encountered with a trunk segment, check the LED(s) associated with the
port to which the segment is attached. Consult
may solve problems indicated by the LED(s).
Table 2-4 Activity For RI/RO LEDs And Corrective Action
LED Activity
GREEN
Blinking GREEN
(RJ45 Port)
Blinking GREEN
(Fiber ST Only)
OFF
Blinking RED
In the case of fiber ST ports only:
can be used to join the Rx connection to the Tx connection on
TIP
the same fiber ST port to determine if the port is operational. An
operational cable connected in this manner will turn the port
status LED GREEN.
2-14
Meaning and Corrective Action
Active (port open). If you encounter
problems refer to
Autowrap enabled (port wrapped). Ensure
the other end of the cable is inserted
properly.
The connection from the upstream device
to the Receive connection is complete but
the port is wrapped. Check the other end of
the cable. Ensure the port on the
downstream device is attached correctly
and enabled.
No connection. Try a different cable.
Resetting the CM may resolve the problem.
Also, verify that the ring speed and
configuration of both the CM and the
attached device are compatible.
Speed-fault condition caused the port to
wrap. Adjust the speed of the CM or the
device to which it is connected.
Table 2-4
for actions that
Section
2.10.5.
A small jumper cable
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