User guide

10 Product Overview ELH100-12/24TX
BootP
The Bootstrap Protocol (BootP) provides for the capability of passing
configuration information to hosts on a TCP/IP network. Using this
process, network devices do not need to be configured before they can
communicate using the TCP/IP protocol suite. The ELH100-12/24TX
uses BootP to automatically configure IP address information without
requiring access to the console menus. BootP operation is configurable
using the System Configuration Menu of the console menus, the on-board
Webagent,orviaSNMP.
LEDs
The port LEDs on the hub unit provide a quick and accurate display of the
integrity of hub connections, indicating link and partition for each of the
ports. The port LEDs on the optional switch/media modules indicate Link,
Activity, Collision, Full/Half duplex mode, and speed (100M) for each of
the ports.
Full Duplex Mode
Full duplex mode is supported on the optional switch/media modules. This
mode of operation can double the throughput of port connections, by
disabling the collision detection portion of the Ethernet Carrier Sense
Multiple Access with Collision Detection (CSMA/CD) protocol, allowing for
two-way traffic. Full duplex is configurable using the Duplex parameter in
the Switch/Media Menu of the console menus or via SNMP.
Application Example
The exploding popularity of the Internet and of corporate intranets, as well
as new, high-bandwidth desktop applications, are driving the demand for
Fast Ethernet. The need to gradually phase in Fast Ethernet networks,
without abandoning existing 10 Mbps network segments, is driving the
need for economical dual-speed network solutions.
The ELH100-12/24TX hubs are ideal for gradually building up the network
infrastructure needed to meet the demands of today’s data intensive
applications, while retaining the use of legacy network equipment. The
hubs’ low cost, high port count, and stacking capability make them
attractive and affordable for dedicated 10/100 Mbps connections to the
desktop. In addition, extensive features, including redundant links, port
security, and micro-segmentation of bus connections, provide the
management needed for the workgroup and local backbone.
The 100M LED appears only on the 10Base-T/
100Base-TX module.