Cabletron-systems SmartSTACK ELH100 User Manual download pdf (Page 36)

18 Installation ELH100-12/24TX

Using a Switch/Media Module

The 10 and 100 Mbps repeater buses in the hub can be linked together by

installing an optional switch/media module in the upper slot on the front panel.

The switch/media module is used when traffic must be passed to a destination

in the other segment, when broadcast traffic is sent, or when the destination

is unknown. The switch/media module passes traffic between the source and

destination segment at full duplex, using store-and-forward processing.

Multiple switch/media modules may be installed in a stack, but only one of the

modules will actively bridge the 10/100 Mbps repeater buses. If the active

switch/media module fails, it must be removed from the hub to activate the

standby module.

Table 2-1. Optional Modules

Part Number Functions Description

ELH-ULSW-TX 10Base-T/

100Base-TX,

plus internal

switching

Single-port RJ-45 uplink module using MDI-X and

MDI connectors, with internal switching between

the 10 and 100 Mbps repeater buses.

ELH-ULSW-F2 100Base-FX-

MM, plus inter-

nal switching

2-port MultiMode (MM) fiber uplink module using

SC fiber connectors, with internal switching be-

tween the 10 and 100 Mbps repeater buses.

ELH100-SNMP RMON/SNMP/

Web Manage-

ment

Agent Module used to manage the hub (or attached

stack). Includes RS-232 serial port for console con-

nection. One backup agent module can be in-

stalled in the stack.

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Cabletron-systems SmartSTACK ELH100 User Manual Page 36