2 Product Overview ELH100-12/24TX
The ELH100-12/24TX hub is desktop or rack-mountable. L EDs on the
frontpanel provide information about the operating status ofthe hub. The
backpanel contains the power connector, redundant power connector,
andstack connectors. The side panel includes two fans that maintain
ventilationand cooling for internal hub components.
Thischapter provides the following information:
•ProductDescription
•Features
•Frontand Rear Panel Component Descriptions
•Feature Summaries
•ApplicationExample
Features•Ports:
- 12/24 dual-speed 10Base-T/100Base-TX ports using RJ-45
connectors(MDI-X)
Note: Port 12/24 includes a to ggle switch for MDI-X or MDI connection
- 2 SCSI connectors for stacking hubs
- 1 redundant power unit socket
•OptionalSwitch/Media Modules:
- ELH-ULSW-TX: 10Base-T/100Base-TX Module* provides 1
RJ-45port 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 connectionactive at a time)
- ELH-ULSW-F2: 100Base-FX Module provides 1 SC
multimodefiber optic port for a bridgedconnection to the stack,
aswell as bridging between the 10 and 100 Mbps stack
segments
•OptionalRMON/SNMP/Web Agent Module:
- ELH100-SNMP: Agent Module provides SNMP, RMON, and
Webmanagement support for the stack. Only two agent
modulesare allowed in a stack: one active and one in standby
mode.
•HubArchitecture:
- 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 managementinterface
- IEEE 802.3u auto-sensing for 10/100 Mbps speed operation
onall RJ-45 ports (not required on attached device)
- Up to 6 hub units can be stacked together, supporting up to
144connections