<s>
ExtremeXOS	B-Application
is	O
the	O
software	O
or	O
the	O
network	B-Protocol
operating	I-Protocol
system	I-Protocol
used	O
in	O
newer	O
Extreme	O
Networks	O
network	B-Protocol
switches	I-Protocol
.	O
</s>
<s>
It	O
is	O
Extreme	O
Networks	O
second	O
generation	O
operating	O
system	O
after	O
the	O
VxWorks	B-Operating_System
based	O
ExtremeWare	O
operating	O
system	O
.	O
</s>
<s>
ExtremeXOS	B-Application
is	O
based	O
on	O
the	O
Linux	B-Operating_System
kernel	I-Operating_System
and	O
BusyBox	B-Application
.	O
</s>
<s>
In	O
July	O
2008	O
legal	O
action	O
was	O
taken	O
against	O
Extreme	O
Networks	O
due	O
to	O
alleged	O
violation	O
of	O
the	O
GNU	B-License
General	I-License
Public	I-License
License	I-License
.	O
</s>
