
Connecting to COM Port for Local Management
3-20 Installation
1.
Verify
that
a
link
exists
by
checking
that
the
port
RX
LED
is
ON
(flashing
amber,
blinking
green,
or
solid
green).
If
the
RX
LED
is
OFF
and
the
TX
LED
is
not
blinking
amber,
perform
the
following
steps
until
it
is
on:
a.
To
view
the
receive
and
transmit
activity
on
a
group
of
segments,
press
the
GROUP
SELECT
switch
(see
Figure 3
‐
11
)
to
step
to
the
appropriate
group.
Each
time
the
GROUP
SELECT
switch
is
pressed,
the
GROUP
LED
lights
up
in
sequence,
indicating
which
Group
is
selected.
On
the
4H4284
‐
49,
you
can
step
to
1,
2,
3,
or
4
for
Groups
1
through
4.
The
receive
and
transmit
activity
for
that
group
of
segments
is
then
indicated
by
the
RX
and
TX
LEDs
for
each
segment.
b. If
there
are
separate
fiber
‐
optic
connections
on
the
other
device,
check
the
crossover
of
the
cables.
Swap
the
cable
connections
if
necessary.
c.
Verify
that
the
fiber
connection
meets
the
dB
loss
and
cable
specifications
for
multimode
cablin
g,
as
outlined
in
the
Cabling
Guide
.
If
a
link
is
not
established,
see
Chapter 4
for
troubleshooting
information
before
contacting
Enterasys
Networks.
To
contact
Enterasys
Networks,
refer
to
“Getting
Help”
on
page xviii
for
details.
Connecting to COM Port for Local Management
This
section
describes
how
to
install
a
UTP
straight
‐
through
cable
with
RJ45
connectors
and
optional
adapters
to
connect
a
PC,
a
VT
series
terminal,
or
a
modem
to
an
Enterasys Networks
module
to
access
Local
Management.
This
section
also
provides
the
pinout
assignments
of
the
adapters.
What Is Needed
The
following
is
a
list
of
the
user
‐
supplied
parts
that
may
be
needed
depending
on
the
connection:
•
RJ45
‐
to
‐
DB9
female
adapter
•
UTP
straight
‐
through
cable
with
RJ45
connectors
•
RJ45
‐
to
‐
DB25
female
adapter
•
RJ45
‐
to
‐
DB25
male
adapter
With
a
UTP
straight
‐
through
cable
with
RJ45
connectors
and
RJ45
‐
to
‐
DB9
adapter,
you
can
connect
products
equipped
with
an
RJ45
COM
port
to
an
IBM
or
compatible
PC
running
a
VT
series
emulation
software
package.
Note:
The RJ45 COM port connector is located in approximately the same location on all
DFE-Gold modules. In the following procedures, the 4H4282-49 COM port is shown as an
example in the figures associated with each procedure.
Содержание DFE-Gold 4H4202-72
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