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Preparing
Network
Connections
Ethernet
Connection
Equipment
You
will
need
an
802.3
MAU
and
an
AUI
or an Ethernet
transceiver
and
transceiver
cable
between
each
EIP
port
and
the Ethernet
network
The
Ethernet
connectors
on
the
EIP
are standard
5-pin
AUI
receptacles
that
require
an
AUI
or transceiver
interface
cable
with
DB-15 AUI
plug
See
Figure
2-14
Figure
2-14
Ethernet
Interface
Cable
Connectors
Network/XCVR
end
EIP end
The
term
Ethernet
is
commonly
used
for
all
carrier
sense
multiple
access/collision
detection
CSMA/CD
local-area
networks
LAN5
that
generally
conform
to
Ethernet
specifications
including
IEEE
802.3
Ethernet
Version
and
IEEE
802.3
were
based
on
and
developed
shortly
after Ethernet
Version
The
slight
differences
between
Ethernet
and
IEEE
802.3
are
implemented
in
hardware
and
both
are
supported
automatically
by
the
EIP
without
any hardware
or software
configuration
changes
Together
Ethernet
and
IEEE
802.3
are the
most
widely
used
local-area
network
protocol
They
are well
suited
to
applications
where
local
communication
medium
must
carry
sporadic
occasionally
heavy
traffic
at
high
peak
data
rates
Stations
on
CSMA/CD
LAN
can
access
the
network
at
any
time
Before
sending
data
the
station
listens
to
the
network
to
see of
it
is
already
in
use
If
it
is the
station
waits
until
the
network
is
not
in
use
then
transmits
collision
occurs
when
two
stations
listen
for
network
traffic
hear
none
and
transmit
simultaneously
When
this
happens
both
transmissions
are
damaged
and
the
stations
must
retransmit
them
The
stations
detect the
collision
and
use backoff
algorithms
to
determine
when
they
should
retransmit
Both
Ethernet
and
IEEE
802.3
are broadcast
networks
which
means
that
all stations
see
all
transmissions
Each
station
must examine
received
frames
to
determine
whether
it
is
the intended
destination
and
if
it
is pass the
frame
to
higher
protocol
layer for processing
IEEE
802.3
specifies
several
different
physical
layers
and
Ethernet
defines
only
one
Each
IEEE
802.3
physical
layer protocol
has
name
that
summarizes
it
characteristics
in the format
speed/signalling
method/segment
length
where
speed
is
the
LAN
speed
in
Mbps
signaling
method
is
the signaling
method
used
either
baseband
or
broadband
and segment
length
is
the
maximum
length
between
stations
in
hundreds
of
meters For example
1OBASE-5
specifies
10Mbps
Baseband
LAN
with
network
segments
spaced
at
500 meters
Preparing
for
Installation
2-25
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