TECHNICAL DOCUMENTS
HARDWARE TERMS
TIME REQUIRED 15 - 20 Minutes
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BySumit Sharma
Email Id [email protected]
Created On25 Aug, 2015
Last UpdatedNA, Version 1.0
Bandwidth Bandwidth refers to the amount of information that can
be transmitted over a network in a given amount of time, usually
expressed in bits per second or bps
Protocol Protocols are the set of rules / algorithm used to
learn routes, so that network traffic can be passed from a source
to the destination.
Broadcast Domain A broadcast domain is a logical division of a
computer network, in which all nodes can reach each other by
broadcast at the data link layer
Collision Domain A collision domain is a section of a network
connected by a shared medium or through repeaters where data
packets can collide with one another when being sent, particularly
when using early versions of Ethernet.
Provider Edge (PE) PE is Provider Edge Router. This is called
Edge Router, as this router connects directly with the Customer
device.
Customer Edge (CE) CE is Customer Edge Router. This is called
Edge Router, as this router connects directly with the Service
Provider.
Modem Modem is the combination of two words, Mo stands for
Modulation, and Dem stands for Demodulation. So, Modem performs the
Modulation & Demodulation process both. In Real World, Modem is
used to confirm power issue at the site.
Cross Cable & Straight Cable
RJ45 & CAT6RJ45 is the connector shown in above picture.CAT6
is the type of cable shown in above picture
SFP SFP is the small form-factor pluggable (SFP) is a compact,
hot-pluggable transceiver used for both telecommunication and data
communications applications. It is used for connecting fiber
cables.
MultiplexerA multiplexer (or mux) is a device that selects one
of several analog or digital input signals and forwards the
selected input into a single line.In a multiplexer, number of E1s
or T1s are connected in different slots for different customers.
For every customer, we provide link or circuits from these
slots
Example Picture
ChassisChassis is the outer body or mechanical covering, in
which different network modules can be inserted for proper
functioning of device.
Example Picture - 6503 Chassis Front View
Example Picture - 6503 Chassis Rear View
Supervisor Card (SUP)SUP card is the Supervisor card, which act
as the central unit in a network switch, to handle incoming &
outgoing traffic Just to understand functionality, Its is similar
to CPU in a computer.
Example - SUP Models - SUP2T, SUP720
Example Picture
E1E1 is the European format for digital transmission. E1 carries
signals at 2 Mbps (32 channels at 64Kbps, with 2 channels reserved
for signaling and controlling).In India, we use the E1 for
transmission. E1 is of 2.048 Mbps. E1 is also called KLM.
T1T1 is used in North America and most parts of Asia.T1 is a
digital transmission link with a total transmit and receive rate of
1.544 Mbps (1544000 bits per second)One Frame = 24 Time Slots (8
Bit) + Sync Bit (1 Bit) =24*8+1= 192+1=193 BitsOne Super Frame= 12
Frames
