LAN Switching Technologies
Front
Panel: The switch front panel consists of 24 RJ-45 port connectors
that support 10/100 Mbps speed and LED indicators as shown in the figures
below. Please note that the 2950 series switches come in different flavors and
vary greatly in the number and type of ports available.
Explanation: The switch front panel contains Ports, LEDs and
the Mode button.
Ports:
1.
10/100 Ports : These use RJ-45 Connectors and
twisted-pair cabling and they can be connected to 10BASE-T-compatible devices,
such as workstations and hubs, or 100BASE-TX-compatible devices, such as
high-speed workstations, servers, hubs, routers, and other switches. The 10/100
ports can be explicitly set to operate in any combination of half duplex, full
duplex, 10Mbps, or 100Mbps.
2.
100BASE-FX Ports : The 100BASE-FX Ports use 50/125-
or 62.5/125-micron multimode fiber-optic cabling. These ports only operate at
100Mbps in full-duplex mode.
You can connect a 100BASE-FX port to an
SC or ST port on a target device by using one of the MT-RJ fiber-optic patch cables
3.
10/100/1000 Ports : The 10/100/1000 ports on Catalyst
2950T-24 switches use RJ-45 connectors and twisted-pair cabling. The ports can
connect to10BASE-T-compatible devices, such as workstations and hubs or
100BASE-TX-compatible devices, such as high-speed workstations, servers, hubs,
routers, and other switches or 1000BASE-T-compatible devices, such as
high-speed workstations, servers, hubs, routers, and other switches.
LEDs: You can use the LEDs to monitor switch activity and
performance. Changing the port mode changes the information provided by each
port status LED.
Management
Options : Catalyst 2950 switches offer
these management options:
Cluster
Management Suite (CMS) : CMS is
made up of three web-based applications that you use to manage switches. You
can use Cluster Builder, which includes Cluster View, and Cluster Manager to
create, configure, and monitor switch clusters. You can also use Device Manager
to manage individual and standalone switches.
IOS
command-line interface (CLI) : You
can manage switches by using command-line entries. To access the CLI, connect a
PC or terminal directly to the console port on the switch rear panel. If the
switch is attached to your network, you can use a Telnet connection to manage
the switch from a remote location.
CiscoView
application: You can use the CiscoView
device-management application to set configuration parameters and to view
switch status and performance information. This application, which you purchase
separately, can be a standalone application or part of an Simple Network
Management Protocol (SNMP) network-management platform.
You can manage switches by using an
SNMP-compatible management station running platforms such as HP OpenView and
SunNet Manager. The switch supports a comprehensive set of MIB extensions and
MIB II, the IEEE 802.1D bridge MIB, and four RMON groups. For more information,
refer to the documentation that came with your SNMP application.
Cisco
1912 - 12 port switch: The Cisco Catalyst 1900 series of
switches offer an economical option for Ethernet networks. There are two
Catalyst 1900 switches, the 1912, with 12 10BaseT switched ports and two Fast
Ethernet switched ports, and the 1924 with 24 10BaseT switched ports and two
Fast Ethernet switched ports. The Cisco Catalyst 1900 switch is useful for
small workgroups needing switched 10-Mbps ports. Cisco has created a
Command-Line Interface (CLI) for the 1900 series of switches.
The figure above shows a
24-port 1900 switch with 2 Fast Ethernet ports.
10BaseT
ports: The 10BaseT network ports use standard RJ-45 connectors.
These ports can connect to 10BaseT-compatible devices, such as individual
workstations and hubs, with Category 3, 4, or 5 cabling. Using this type of
cabling, the distance between the switch and the attached device can be up to
100 meters.
Switched
100-Mbps Ports : The switches can have any of the following high-speed ports
(depends on model):
1. Two switched 100BaseTX ports
2. One switched 100BaseTX port
and one switched 100BaseFX port
3. Two switched 100-Mbps
fiber-optic ports
Rear-Panel
Description
The rear panel of a Catalyst
1900 switch consists of the following:
1. AC power connector
2. Console port
3. Redundant power system (RPS)
connector and
4. A switched AUI port
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