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Stackable Capabilities
SEH100TX User’s Guide 2-3
LANVIEW LEDs
Cabletron Systems LANVIEW status monitoring and diagnostics system
is a troubleshooting tool that helps in diagnosing power failures,
collisions, cable faults, and link problems. The LANVIEW LEDs are
conveniently located on the SEH front panel.
2.3 STACKABLE CAPABILITIES
The SEH100TX-22 is a non-intelligent hub designed to be managed by
the Cabletron Systems SEHI100TX-22 intelligent hub. The design of the
SEH allows the stacking of five SEH hubs in an unmanaged configuration
or up to four Cabletron Systems SEH non-intelligent hubs with one SEHI.
The SEHI is placed at the bottom of the stack. It manages all SEH hubs in
the stack and provides full packet and error statistics for the entire stack,
individual devices, or individual ports.
SEH non-intelligent hubs may be stacked together or with one SEHI
using Cabletron Systems HubSTACK Interconnect cables provided with
the SEH. Stackable configurations make it possible to maintain only one
IEEE repeater hop while providing up to 120 ports. The design allows
hubs to be added or removed from a stack without having to power down
the entire stack.
2.4 RACK MOUNTING CAPABILITIES
The SEH can be installed in a 19-inch rack. Cabletron Systems provides
the necessary brackets and mounting screws for the SEH. Refer to
Chapter 4,
Installation
, for complete rack mounting instructions.