<s>
NX-OS	B-Operating_System
is	O
a	O
network	B-Protocol
operating	I-Protocol
system	I-Protocol
for	O
the	O
Nexus-series	B-Protocol
Ethernet	B-Protocol
switches	I-Protocol
and	O
MDS-series	O
Fibre	B-Architecture
Channel	I-Architecture
storage	O
area	O
network	B-Protocol
switches	I-Protocol
made	O
by	O
Cisco	O
Systems	O
.	O
</s>
<s>
The	O
command-line	B-Application
interface	I-Application
of	O
NX-OS	B-Operating_System
is	O
similar	O
to	O
that	O
of	O
Cisco	B-Protocol
IOS	I-Protocol
.	O
</s>
<s>
Recent	O
NX-OS	B-Operating_System
has	O
both	O
Cisco-style	O
CLI	O
and	O
Bash	B-Operating_System
shell	I-Operating_System
available	O
.	O
</s>
<s>
On	O
NX-OS	B-Operating_System
7.0(3 )	O
I3	O
,	O
the	O
output	O
from	O
uname	O
with	O
the	O
-a	O
command	B-Application
line	I-Application
argument	O
might	O
look	O
like	O
the	O
text	O
below	O
:	O
</s>
<s>
NX-OS	B-Operating_System
does	O
not	O
support	O
the	O
login	O
command	O
to	O
switch	B-Protocol
users	O
.	O
</s>
<s>
NX-OS	B-Operating_System
does	O
not	O
distinguish	O
between	O
standard	O
or	O
extended	O
access	O
lists	O
,	O
all	O
lists	O
are	O
named	O
and	O
"	O
extended	O
"	O
in	O
functionality	O
.	O
</s>
<s>
NX-OS	B-Operating_System
did	O
not	O
support	O
scp	O
server	O
prior	O
to	O
5.1(1 )	O
release	O
.	O
</s>
<s>
In	O
NX-OS	B-Operating_System
,	O
there	O
is	O
no	O
"	O
write	O
"	O
command	O
to	O
save	O
the	O
configuration	O
like	O
on	O
IOS	B-Protocol
(	O
one	O
uses	O
the	O
"	O
copy	O
"	O
command	O
,	O
instead	O
)	O
.	O
</s>
<s>
When	O
accessing	O
NX-OS	B-Operating_System
,	O
users	O
authenticate	O
directly	O
to	O
their	O
assigned	O
privilege	O
level	O
.	O
</s>
<s>
SSH	B-Protocol
server	O
is	O
enabled	O
while	O
Telnet	B-Protocol
server	O
is	O
disabled	O
by	O
default	O
in	O
NX-OS	B-Operating_System
.	O
</s>
