Cabletron Systems MT8-MIM Spezifikationen PDF herunterladen (Seite 64)

Configuration Views Hub Redundancy Management

SPECTRUM Enterprise Manager Page64 Cabletron Ethernet Hubs

• MRXI

• MiniMMAC

SPECTRUM allows redundant “circuit”

connections between any two or more hub devices

that have redundant capability in their firmware.

A circuit is represented by a cable connection

from one module port on a primary hub device to

one or more module ports on secondary hub

devices. The cable connections can use any valid

cable type, including thin-net, coaxial, fiber optic,

or AUI. The terminating connectors used depend

on the type of cable connecting the module ports.

Any two or more cable connections create a

complete circular “circuit” pathway between the

two devices. One pathway is always set up as

primary and the others as secondary. The

secondary circuit becomes active if the primary

pathway fails. This allows the primary hub device

to repeat data packet information on an

alternative module port if a problem exists on the

primary port.

Although circuit connections typically occur

between devices in the same room, the circuit

connections can also occur over longer distances

between floors or buildings (with the proper FDDI

cables and associated modules). Refer to

Figure 10 (Page 65) for an illustration of a typical

redundant cable circuit connection between two

redundant hub devices.

Note:

The SIRM and the IRBM hub devices

do not have redundant circuit

compatibility available in their device

firmware.

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Cabletron Systems MT8-MIM Spezifikationen Seite 64