SMC Networks TigerStack II 10/100 User Manual page 15

A H
BOUT THE UBS
The hubs contain a comprehensive array of LEDs for "at-a-glance"
monitoring of network and port status. Also, if the Base Hub
contains a Network Management Module, the entire stack can be
managed in-band via SNMP, RMON (groups 1, 2, 3 and 9), or a
Web browser, as well as remotely via Telnet or SLIP. This module
also has a serial port for out-of-band management.
The hubs also provide a measure of fault tolerance. If two Network
Management Modules are installed in the stack, only the module
highest in the stack will be active; the Management Module in the
lower hub is placed in standby mode. The standby Management
Module will automatically take over if the active module fails. In
addition, the hub's stack connections support an auto-bypass
feature. If any hub in a stack is powered off, data still passes
through the stack connections to all other hubs, so operation of
the rest of the stack remains uninterrupted. There's also support
for a Redundant Power Unit to ensure continuous operation in the
event of a power failure.
Note: Do not install more than two Network Management
Modules in a stack.
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