Connecting to Modem
Connecting to the Network
Enterasys A4 Fast Ethernet Switch Hardware Installation Guide
2-27
Connecting Fiber-Optic Cables to SFP Ports
Before connecting cables to SFP ports, you must install the appropriate transceiver as described in
“
Installing an Optional SFP Transceiver
” on page 2-24. This section describes how to connect a
1-Gigabit fiber-optic segment from the network or other devices to an SFP port connector (LC or
MT-RJ).
Each fiber-optic link consists of two fiber-optic strands within the cable for Transmit (TX) and
Receive (RX). The transmit strand from a device port connects to the receive port of a fiber-optic
1-Gigabit Ethernet device at the other end of the segment. The receive strand of the applicable LC
or MT-RJ port connects to the transmit port of the fiber-optic 1-Gigabit Ethernet device.
To connect an LC or MT-RJ cable connector to an SFP port connector:
1.
Remove the protective covers from the port SFP and from the connectors on each end of the
cable.
2.
Insert the cable connector into the
SFP
connector until it clicks into place.
3.
Plug the other end of the cable into the appropriate port on the other device. Some cables may
be terminated at the other end with two separate connectors, one for each fiber-optic strand. In
this case, ensure that the transmit fiber-optic strand from the A4 switch is connected to the
receive port of the other device, and the receive fiber-optic strand on the A4 switch is
connected to the transmit port of the other device.
4.
Repeat this procedure for other SFP ports, if needed.
5.
Verify that a link exists by checking that the Link/Activity LED is ON (solid green or blinking
green). If the Link/Activity LED is OFF, perform the following steps until it is on:
a.
Verify that the device at the other end of the segment is powered ON and connected to the
segment.
b. If there are separate fiber-optic connections on the other device, check the crossover of the
cables. Swap the cable connections if necessary.
c.
Check that the fiber-optic connection meets the dB loss and cable specifications for
multimode cabling.
d. If a link has not been established, refer to
troubleshooting details. If a problem persists, refer to “
” on page xvii for
details on contacting Enterasys Networks for support.
6.
If an SFP port is unused, install a dust cover.
Caution:
Do not touch the ends of the fiber-optic strands, and do not let the ends come in contact
with dust, dirt, or other contaminants. Contamination of cable ends causes problems in data
transmissions. If the ends of the fiber-optic strands become contaminated, use a canned duster to
blow the surfaces clean. A fiber-port cleaning swab saturated with optical-grade isopropyl alcohol
may also be used to clean the ends.
Precaución:
No toque los extremos de los cables de fibra óptica y evite su contacto con el polvo,
la suciedad o con cualquier otro contaminante. Si los extremos de los cables se ensucian, es
posible que la transmisión de datos se vea afectada. Si nota que losextremos de los cables de
fibra óptica se ensucian, utilice aire comprimido paralimpiarlos. También puede limpiarlos con un
estropajo embebido en alcohol isopropílico.
Note:
Leave the protective covers in place when the connectors are not in use to prevent
contamination.
Summary of Contents for A4H124-24
Page 2: ......
Page 12: ...x...
Page 16: ...xiv...
Page 20: ...Getting Help xviii About This Guide...
Page 60: ...Removing the Switch from a Rack 3 8 Troubleshooting...
