Cabletron Systems Ethernet Hubs manual Hub Redundancy Management

Hub Redundancy Management

Control

This button allows you to access the IRBM Bridge Control View. Table 4-13provides the information contained in the view.

Table 4-13. IRBM Bridge Control View Fields

Field	Definition
Current Bridge	The status of the bridge, for example, ON-LINE, STAND BY,
Status	or DISABLED.
Bridge Status	Enables or disables the bridge.
Control
Bridge Restart	Forces the bridge to undergo a software reset.
Bridge Settings	Restores the bridge settings to their default values.

Hub Redundancy Management

The hub redundancy management features described in this section include information specific to the following Cabletron hub devices:

•IRM2

•IRM3

•MRXI

•MiniMMAC

NOTE

The SIRM and the IRBM hub devices do not have redundant circuit compatibility available in their device firmware.

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

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