Accton Technology CheetaHub Power-3012B, Руководство по установке

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CheetaHub Power-3012B User’s Guide
Quick Installation v
5. Connect other media types using the D-type MII port.
Attach to alternate media
types via the Class I MII port
You can also connect to other network devices using the
media independent interface (MII) on the back panel. You
can attach to 100BASE-TX (operating at 100 Mbps only),
100BASE-T4 or 100BASE-FX media types by plugging the
appropriate transceiver into the MII connector. This port can
be used to connect the hub to a collapsed backbone, or for
media conversion to a compatible network device. However,
note that the MII Port is Class I, and therefore cannot be
cascaded to another hub.
Limits on total network
span also apply to MII port
When connecting a switch or router to the MII port with
twisted-pair cable, the maximum network span is 200 meters
or 656 feet (i.e., 100 meters for the downlink from the switch
or router to the hub, and 100 meters from hub to workstation)
.
However, by attaching fiber-optic cable to the MII port on
the rear panel, the maximum network span can be extended
to 260 meters or 853 feet (i.e., 160 meters for the fiber optic
downlink from the hub to the switch or router, and 100
meters from hub to workstation)
.
6. These hubs can serve as a collapsed backbone for small
networks, or can be connected to a network interconnection
device via one of the RJ-45 ports or the MII port. (Refer to
Chapter 3 for sample applications.)
7. Verify network communications by ensuring that:
•
you have made all the necessary connections
•
you can access any connected resources
•
the hub’s indicators are functioning properly
If you encounter any problems installing this dual-speed
CheetaHub, refer to Chapter 2 for a detailed description of
installation procedures, Chapter 3 for sample configurations, or
Appendix A for help in troubleshooting.