Network Configurations and Cable Connections
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893-743-A
Multiple-hub Networks—System 2000 Only
Individual System 2000 hubs or Model 280x/281xSA cluster configurations
can be interconnected through a backbone interconnection or through the
MDI-X/MDI ports. Backbone connections are made through the interconnect
port, either the AUI port (Model 2813SA hub) or the 10BASE-FL port
(Model 2814SA hub).
Configuration Rules
When you install a network with more than one hub, you must follow these
configuration rules:
■
Make sure all UTP segments are no longer than 100 meters.
■
Disable the signal quality error (SQE) test function on the transceiver
connected to the AUI port of the Model 2813SA hub.
■
You can have a maximum of four hubs (repeaters) in the data path between
any two Ethernet stations. (Remember that a cluster counts as only a
single repeater.) To extend the network further, use a bridge or router.
■
To use port 1 as an interconnect port to an MDI-X port on another hub,
you must configure it as an MDI port, using the MDI-X/MDI switch.
Interconnecting Model 2813SA Hubs Using the AUI Port
You can connect the AUI port on the Model 2813SA hub to any medium-
specific IEEE 802.3 MAU. For example, you can use an IEEE 802.3
10BASE-FL fiber optic medium attachment unit (FOMAU), such as the
SynOptics Model 504A transceiver, to connect the Model 2813SA hub to
a fiber optic port on another hub. You can also connect the Model 2813SA
hub AUI port to a coaxial backbone through an IEEE 802.3 MAU.
Although the example that follows shows connection between Model 2813SA
hubs and fiber optic cable through transceivers, the simpler way to connect to a
fiber backbone is by using Model 2814SA hubs, with their integral
10BASE-FL ports.
