© Copyright Lenovo 2018
Chapter 3: Configuring the NE2552E
41
Accessing the Switch Through the SSHv2/Telnet Interface
The
switch
supports
a
Command
‐
Line
Interface
(CLI)
that
you
can
use
to
configure
and
control
the
switch
over
the
network
through
the
SSHv2/Telnet
client
software.
You
can
use
the
CLI
to
perform
many
basic
network
‐
management
functions.
In
addition,
you
can
configure
the
switch
for
management
through
an
SNMP
‐
based
network
‐
management
system.
If
you
know
the
IP
address
for
the
switch
)
and
you
have
an
existing
network
connection,
you
can
use
the
SSHv2/Telnet
client
software
from
an
external
management
station
to
access
and
control
the
switch.
Optimally,
the
management
station
and
the
switch
should
be
on
the
same
subnet.
Otherwise,
you
must
use
a
router
and
configure
a
gateway
address
on
the
switch.
If
you
have
to
obtain
the
IP
address
for
the
switch
or
establish
a
network
connection,
contact
your
system
or
network
administrator.
The
switch
also
supports
user
‐
based
security
that
enables
you
to
prevent
unauthorized
users
from
accessing
the
switch
or
changing
its
settings.
To
connect
to
the
switch
through
the
SSHv2/Telnet
interface,
refer
to
your
client
software
for
specific
instructions
on
how
to
invoke
a
session.
For
example,
using
the
Microsoft
Telnet
Client,
you
would
complete
the
following
steps:
1.
From
a
DOS
command
‐
line
prompt,
type
telnet
<switch
IP
address>
and
press
Enter.
2.
When
prompted,
enter
your
user
name
and
password.
When
logging
in
to
a
switch
for
the
first
time,
the
default
switch
administrator
user
name
is
USERID
,
and
the
default
password
is
PASSW0RD
(where
the
sixth
character
is
the
number
zero,
not
the
letter
O).
The
User
ID
and
password
fields
are
case
‐
sensitive.
For
security
purposes,
you
will
be
prompted
to
change
the
administrator
password
after
the
first
successful
login.
Otherwise,
if
you
have
an
assigned
user
account,
use
your
assigned
user
name
and
password.
Important:
Any
configuration
changes
made
using
the
management
interfaces
will
be
lost
during
the
next
switch
reboot
unless
you
execute
the
copy
running-config
startup-config
command.
This
command
stores
the
current
switch
configuration
and
all
changes
in
nonvolatile
memory.
For
more
information
about
configuring
through
the
CLI,
see
the
Application
Guide
and
Command
Reference
for
your
specific
switch
and
its
installed
firmware.
