Switches: Cisco Catalyst 2950 Series Switches(www.cisco.com)

chinchillatidyNetworking and Communications

Oct 26, 2013 (3 years and 10 months ago)

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Section 1:

Assignment:


Team three,
member’
s responsibilities:


Craig Bartoshesky: Collect information and write on Computers and Cables

Steven Landis: Collect information and write on Hubs

Angela Zeng: Collect information and write on Switches; Coordinat
e the group work
activities

Hylceth Fernandez: Collect information and write on Routers

Tina Zheng: Collect information and write on NIC

Michael Jones: Put the team

s website together

Joseph Delaney: Put the final version of the report together,
formatted
,

and proof read
as well.

Joseph Walton: Proof reading the
final version


Section2:

Team three

s lab hour is from 1pm to 3pm on Sunday afternoon. During the lab hours,
TA Wu showed us the devices in room 202. We then took some pictures of the devices
and di
vided the work among ourselves. Each
member

of the team went on their own
way to research on the devices. We did the research mostly on the internet. The
pictures of the devices are either from the internet or from the pictures we took in the
lab.


Michae
l Jones has previous experience on HTML and is our group

s website
programmer. He will be maintaining the site for the group. Joseph Delaney and
Joseph Walton are responsible for combine the team work
together

and print out the
final version for Project 1.









Computer



Dell Dimension XPS 600.


Pentium(R) D CPU 3.4GHz, 2.00 GB of
RAM.


300 GB Hardrive.


Microsoft windows XP, Professional. Version 2002,
SP2.


Since this computer is running Windows XP Pro, setting up the initial network is
quite simple.


There is a “network wizard” that takes you through


a step
-
by
-
step
process to connect and find the network that the computer is connected with.

XPS stands for “Xtreme Performance System”


This computer is meant for gaming and
multimedia.


Its package thro
ugh dell comes with a 24 inch LCD Widescreen, along
with an nVidia GeForce 7800 GTX SLI graphics card.


For this classroom its meant for
multitasking.


In the real world this computer would be used for media devices such as
creating videos projects and als
o for the extreme gamer.







The cables used to network the computers to the switches and hubs are called
Unshielded Twisted pair cables, or UTP.


These cables are a common form of wiring in
which two conductors are wound around each other for the purpos
e of canceling out
electromagnetic interference which can cause crosstalk.


The twist rate makes up part
of the specification for the given type of cable.


The greater the number of twists, the
more crosstalk is reduced.


UTP cables are not shielded. This
lack of shielding results
in a high degree of flexibility as well as rugged durability. UTP cables are found in
many Ethernet networks and telephone systems.


Cat 5e: Currently defined in
TIA/EIA
-
568
-
B. Provides performance of up to 125MHz, and is frequent
ly used for
both 100Mbit/s and gigabit Ethernet networks.




Switches:
Cisco Catalyst 2950 Series Switches
(www.cisco.com)

Cisco Cata
lyst® 2950G
-
12 is a member of the Catalyst 2950 Series Intelligent
Ethernet Switches, and is a fixed
-
configuration, stackable switch that provides
wire
-
speed Fast Ethernet and Gigabit Ethernet connectivity for midsized networks and
the metro access edge. T
he Catalyst 2950 Series brings intelligent services, such as
enhanced security, high availability and advanced quality of service (QoS), to

the
network edge

while maintaining the simplicity of traditional LAN switching.



Data Link Protocol:

Ethernet, Fast
Ethernet



Port Quantity:
24



Switching Protocol:
Ethernet



MAC Address Table:
8k entries



Remote Management Protocol:
SNMP, RMON, Telnet



Stephen Landis 9/20/06

A 3Com Network Hub from Office Connect is a device that connects differing
Ethernet cables from d
ifferent computers together to make them act as one unit. As
the name would suggest, this forms the individual computers into a network for more
efficient exchange of information.


Ethernet hubs in general has been slowly going out of favor to Ethernet

switches
even though a network hub has several advantages including being a more effective
defense against hackers and networking errors due to it’s functions as a multiport
repeater and jamming signals in case of a collision by repeating signals from one

port
out the others on the physical layer. Likewise, a hub can connect several devices
together while a switch needs special modification for this task.

Typically hubs behave like a shared
-
medium, only one device can transmit at a
time and each host is
responsible for collisions and retransmission. Some protocols
allow for one part to receive while the other transmits, however this is not normal,
most hubs receive and transmit with the same portion or at the same time.

Most hubs can detect typical probl
ems in the transmission, and separate the
troublesome port from the rest of the shared
-
medium. This generally makes
hub
-
based Ethernet more resilient then coaxial cable based ones.




Network Interface Card (NIC)



Writen by Xintian Zheng

Study Notes:


1. What is Network Interface Card and what is its main function in network system?


-

Network Interface Card (NIC) is piece of circuit
board that plugs into the bus
of both user machines (clients) and servers in a loca
l area network (LAN).
It is
also called Network Adapter.
The adapters are wired to a network hub, switch
or router typically
through
using twisted wire pair cables or optical fibers may
be used for very fast connections, but wireless network technology

(WL
AN)

is
mostly developed recently
for
its
mobile flexibility

and expendability

but its
requires
more
high security

technology than other traditional ones.

T
he
function of
network adapter controls the transmission and receiving of data at
the data link leve
l (layers 1 and 2 of the OSI model).

The topology of
local
-
area networks is the physical layout of the network;

it represents the way
of network connections
. For wired local
-
area networks, there are four basic
topologies: bus, ring, star, and mesh.

The mos
t typical one is the bus type.


2.

What type of NIC card used in our project and why we use it?


First of all, w
e
studied

PCI

terminology for the researching needs.

PCI defines the
electrical characteristics and signal protocol used for two devices to communi
cate over
a computer's central bus. Both
Ethernet

and
Wi
-
Fi

network adapters

for desktop and
notebook computers commonly utilize PCI

specification
. PCI network adapters and
other devices exist in several different shapes and sizes called "form factors."

We comp
ared and analyzed several type
s

of PCI form factors as below:



Traditional Ethernet PCI Card



commonly
pre
-
install inside desktop
computers



Mini PCI

-

Wi
-
Fi network cards embedded inside notebook computers



PCMCA Card



known
as
Credit Card Network Adapters

We also learned the general naming rules for the NIC:

E
x
.

-

Netegriti Mini PCI WiFi


This is a cards embedded inside notebook computer
that installs invisibly into your laptop's internal mini PCI slot.


Because the Ethernet Card is the most popular NIC r
ecognized by computer network,
we studied its development history and learned various specifications for it. We take
the snap shot from internet



A
1990s

Ethernet

network interface
card which c
onnects to the
motherboard via the now
-
obsolete
ISA bus
. This card supports both
coaxial
-
based

10BASE2

(
BNC
connector
, left) and
Twisted
-
pair
-
ba
sed

10BASE
-
T

(
RJ
-
45 connector
, right).


Why we use this type of the card?

We need choose and compare the factors for diffe
rent prices and the outlet for
assembly.

Here is the picture of Ethernet card. The terminal is made of USB connector. You can
use the standard Ethernet cable to connect the router side.



You can find the good shopping center through website. One of them is NexTag
shopping search engine, which has prices from name brand stores all over the web.
Compare prices for computers, electronics, books, CDs, movies, office products and
video g
ames.



Router:

Function



A router is a computer networking device that forwards data packets across a
network toward their destinations, through a process known as routing. Routing
occurs at layer 3 (the Network layer e.g. IP) of the OSI seven
-
la
yer protocol stack. It
acts as a junction between two or more networks to transfer data packets among them.
(“Definition”) In this section you will find detailed information about the router used
for this project.


Difference



Routers are now being

implemented as Internet gateways, primarily for small
networks like those used in homes and small offices. This application is mainly where
the Internet connection is an always
-
on broadband connection like cable modem or
DSL. These are routers in the true

sense because they join two networks together
-

the
WAN and the LAN


and have a routing table. Often these small routers support the
RIP protocol; although in a home application the routing function does not serve
much purpose since there are only two wa
ys to go
-

the WAN and the LAN.
(“Definition”)



We are using a Cisco router from the 2600 series. This is a
Small/Medium
-
Sized, Enterprise Branch Office router. It is different from the kind of
routers we use at home because the Cisco 2600 has the ve
rsatility to support today’s
branch and enterprise requirements for data, voice, video, and hybrid dial access
applications, and the high
-
speed connectivity necessary to support the increased
bandwidth needs for multiservice applications. (“Router Guide”)



Description


Next you will find images*, features, and a detailed description of the router.


* Front View:




Front: 16
-
Port Analog Modem Network Modules


The following analog modem network modules originate or terminate analog
telephone transmissio
ns through RJ
-
11 modular jacks:


•16
-
port analog modem network module (NM
-
16AM
-
V2)








Network Protocols Supported


The analog modems described in this chapter support these protocols:



•Standardized modem protocols



•Standardized mod
em error correction and compression



•Standardized fax protocols


Source: (“Modules”)



* Rear View:






Back Ports:


Figure 1: Physical Interfaces



The physical interfaces include power plug for the power supply and a power switch.
The ro
uter has two Fast Ethernet (10/100 RJ
-
45) connectors for data transfers in and
out. The module also has two other RJ
-
45 connectors on the back panel for a console
terminal for local system access and an auxiliary port for remote system access or dial
backu
p using a modem. The 10/100Base
-
T LAN ports have Link/Activity,
10/100Mbps, and half/full duplex LEDs. (“Ports”)





Figure 2: Rear Panel LEDs











Table 1: Rear Panel LEDs and Descriptions

LED

Indication

Description

LINK

Green

An Ethernet li
nk has been established

Off

No Ethernet link established

FDX

Green

The interface is transmitting data in full
-
duplex mode

Off

When off, the interface is transmitting data in half
-
duplex mode

100 Mbps

Green

The speed of the interface is 100 Mbps

Off

The speed of the interface is 10 Mbps or no link is established








Source: (“Ports
”)

* All the pictures were taken during lab hours.


Design

Source: (“Design”)


Sources


For more information about the router and its parts you can visit the following
websites


Cisco Systems Home Page


www.cisco.com


User guide


http://www.cisco.com/a
pplication/pdf/en/us/guest/products/ps259/c2001/ccmigration_
09186a00801c19ea.pdf



Work Cited



“Definition”


http://en.wikipedia.org/wiki/Router