Stackable Capabilities - Cabletron Systems SEHI-22 User Manual

CHAPTER 1: INTRODUCTION
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 SEHI front panel.
Reset Button
Resetting the hub with the front panel Reset Button reboots the SEHI and
initializes the processor.
Local Management
Manage the SEHI and its attached segments through Local Management
on the SEHI. Local Management provides full packet and error statistics
for the entire stack, individual device, or individual port. Access Local
Management by attaching a DEC VT320 terminal or a PC using VT320
emulation software to the SEHI RJ45 COM port.
1.5

STACKABLE CAPABILITIES

The SEHI intelligent hub is designed to manage the Cabletron series of
SEH non-intelligent hubs. The SEHI serves as the logical "top" of the
stack. It manages all SEH hubs in the stack providing full packet and error
statistics for the entire stack, individual device, or individual port.
Stack up to four SEH non-intelligent hubs with one SEHI using Cabletron
external HubSTACK Interconnect cables. Stackable configurations make
it possible to maintain only one IEEE repeater hop while providing up to
130 Ethernet ports. Hubs can be added or removed from the stack without
having to power down the entire stack.
1-4 SEHI USER'S GUIDE