Datasheet

Connecting to the Network
3-20 Installation
e. Ensure that the twisted pair connection meets the dB loss and cable specifications
outlined in the Cabling Guide. Refer to “Related Documents” in About This Guide
for information on obtaining this document.
If a link is not established, contact Enterasys Networks. Refer to “Getting Help” on
page 1-6 for details.
4. Repeat steps 1 through 3 above, until all connections have been made.
Connecting Fiber-Optic Cables to Mini-GBICs (applies to
7G-6MGBIC)
This section provides the procedure for connecting 1-Gigabit Ethernet fiber-optic
segments from the network or other devices to Mini-GBIC MT-RJ or LC port connectors
installed in the optional 7G-6MGBIC interface. An MT-RJ connector is shown in
Figure 3-13 and an LC connector is shown in Figure 3-14.
Each fiber-optic link consists of two fiber-optic strands within the cable:
Transmit (TX) and Receive (RX)
The transmit strand from an MT-RJ port on the DFE module interface connects to the
receive port of a fiber-optic Gigabit Ethernet device at the other end of the segment. The
receive strand connects to the transmit port of the fiber-optic Gigabit Ethernet device.
The following procedure describes how to connect an MT-RJ cable connector (Figure 3-13)
to a Mini-GBIC port connector. This procedure also applies to an LC cable connector
shown in Figure 3-14. Refer to Figure 3-13 as an example and proceed as follows:
1. Remove the protective covers (not shown) from the MT-RJ fiber-optic port on the
Mini-GBIC and from the connectors on each end of the cable.
2. Insert the MT-RJ cable connector into the Mini-GBIC until it clicks into place.
Note: Leave the protective covers in place when the connectors are not in use to prevent
contamination.
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 cleaning swab saturated
with optical-grade isopropyl alcohol may also be used to clean the ends.
Note: To remove the MT-RJ cable connector, press on its release tab and pull it out of the
Mini-GBIC
connector.