Cabletron Systems SmartSTACK ELH100 - Manual (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.