Sun-microsystems 1.0 Uživatelský manuál stáhnout pdf (Strana 101)

FDDINetworkTopologies 75

Advantages

Dual-homing offers the same advantages as a standalone concentrator,

described on page 72. It also offers improved resistance against cable faults and

concentrator failure.

Disadvantages

The number of stations that can be attached to the concentrator is limited by

the number of M-ports, which is typically between 2 and 32. Since each

dual-homed station requires two M-ports, only a limited number of stations

can be connected in this way.

The dual-homing configuration requires a minimum of two concentrators,

which are more expensive than single-attached or dual-attached stations.

TreeofConcentrators

The tree of concentrators is an incremental expansion of the standalone

concentrator topology, described on page 72. Two or more concentrators are

connected in a hierarchical topology, with one concentrator designated as the

root of the tree, as shown in Figure 7-5. This topology is typically used to

connect a large number of stations within a single building or office.

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Sun-microsystems 1.0 Uživatelský manuál Strana 101