Bootp/Dhcp; Leds; Full Duplex Mode; Flow Control - Cabletron Systems SmartSTACK ELS100-24TXM Installation And User Manual

BootP/DHCP

The Bootstrap Protocol (BootP) and the Dynamic Host Configuration
Protocol (DHCP) provide 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 ELS100-24TXM switch uses BootP and
DHCP to automatically configure IP address information without requiring
access to the console menus. BootP/DHCP operation is configurable
using the BootP/DHCP Enable option in the System Configuration Menu
of the console menus or via SNMP.

LEDs

The switch port LEDs provide a quick and accurate display of the integrity
of switch connections and port mode. The default operation of the RJ-45
LEDs indicates Link (L) and Activity (A) for each of the ports. The
operation of these LEDs can be changed by use of the LED mode button
on the switch front panel. When the LED mode button is pressed (pressed
and held in), the operation of the RJ-45 LEDs changes to indicate 10/100
Mbps speed and full/half duplex operation, respectively. The fiber port
LEDs indicate Link (L) and Activity (A) for each of the ports. The fiber port
LEDs are not affected by the LED mode button.

Full Duplex Mode

The full duplex mode of operation on a port can double the throughput of
switch connections. This mode disables 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 Mode parameter in the Port Menu of the
console menus or via SNMP.

Flow Control

Flow control allows you to manage network traffic during congestion
periods and to prevent the loss of packets when port buffer thresholds are
exceeded. Flow control also serves to deny access to additional traffic
that could add to a congestion condition. The ELS100-24TXM switch
supports flow control per the IEEE 802.3x standard. See Appendix C,
"Flow Control," for more information on this feature.

Virtual LANs (VLANs)

VLANs allow you to connect users to a specific LAN segment regardless
of their physical location. The ELS100-24TXM switch supports tagged
VLANs per the IEEE 802.1Q draft standard. With frame tagging, a short
tag is appended to every frame that crosses the network backbone. The
tag identifies which VLAN the frame belongs to. See Appendix D, "Virtual
LANs," for more information.
10 Product Overview ELS100-24TXM