Cabletron Systems SmartSTACK ELH100 - Manual (Page 20)

2 Product Overview ELH100-12/24TX
The ELH100-12/24TX hub is desktop or rack-mountable. LEDs on the
front panel provide information about the operating status of the hub. The
back panel contains the power connector, redundant power connector,
and stack connectors. The side panel includes two fans that maintain
ventilation and cooling for internal hub components.
This chapter provides the following information:
• Product Description
• Features
• Front and Rear Panel Component Descriptions
• Feature Summaries
• Application Example
Features
• Ports:
- 12/24 dual-speed 10Base-T/100Base-TX ports using RJ-45
connectors (MDI-X)
Note: Port 12/24 includes a toggle switch for MDI-X or MDI connection
- 2 SCSI connectors for stacking hubs
- 1 redundant power unit socket
• Optional Switch/Media Modules:
- ELH-ULSW-TX: 10Base-T/100Base-TX Module* provides 1
RJ-45 port for a bridged connection to the stack, as well as
bridging between the 10 and 100 Mbps stack segments
* Includes MDI-X or MDI connection (only 1 connection active at a time)
- ELH-ULSW-F2: 100Base-FX Module provides 1 SC
multimode fiber optic port for a bridged connection to the stack,
as well as bridging between the 10 and 100 Mbps stack
segments
• Optional RMON/SNMP/Web Agent Module:
- ELH100-SNMP: Agent Module provides SNMP, RMON, and
Web management support for the stack. Only two agent
modules are allowed in a stack: one active and one in standby
mode.
• Hub Architecture:
- 2 segment repeaters for 10 and 100 Mbps
- 3 or 6 Quad Controllers with 4 10/100 ports, 2 10/100 segment
repeaters, cascaded backplanes, serial management interface
- IEEE 802.3u auto-sensing for 10/100 Mbps speed operation
on all RJ-45 ports (not required on attached device)
- Up to 6 hub units can be stacked together, supporting up to
144 connections