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C2653M (6/07) 25
RJ-45 10BASE-T/100BASE-TX Port Status LED - Right (Duplex/Collision) (Continued)
Green Port is set to
100BASE-TX
full-duplex
mode.
— If 100BASE-TX full-duplex operation is
desired, no action is required.
If 100BASE-TX full-duplex operation is
not desired, refer to the Setting
10BASE-T/100BASE-TX Port Modes of
Operation section in this manual for
information.
Flashing
green
Port is set to
100BASE-TX
half-duplex
mode and
network
collision has
occurred.*
Normal or excessive collisions
occur on a half-duplex link.*
If a normal collision occurs, no action is
required.
If a problem with the network exists due
to excessive collisions, do any of the
following as appropriate:
• If half-duplex mode is not required,
set the TX Mode switch to full-
duplex mode by means of auto
negotiation or by forcing the mode
(refer to the Setting 10BASE-T/
100BASE-TX Port Modes of Opera-
tion section in this manual for
information).
• If half-duplex mode is required, do
any of the following as applicable:
– Replace the cable if it is defective
or if it is not the proper cable
type. Use Category 5e or higher
cable.
– Ensure that the cable is the
proper length. Cable length must
not exceed 328 feet (100 meters).
– Replace the network interface
card (NIC) if it is defective or if it
is incompatible.
– Segment the network.
(Continued on next page)
Table C. Troubleshooting with Rear-Panel Indicators (Continued)
Indicator
Color Meaning Possible Cause Corrective Action