<s>
OVN	B-General_Concept
(	O
Open	O
Virtual	B-Protocol
Network	I-Protocol
)	O
is	O
a	O
system	O
to	O
support	O
virtual	B-Protocol
network	I-Protocol
abstraction	O
.	O
</s>
<s>
OVN	B-General_Concept
complements	O
the	O
existing	O
capabilities	O
of	O
Open	B-Language
vSwitch	I-Language
to	O
add	O
native	O
support	O
for	O
virtual	B-Protocol
network	I-Protocol
abstractions	O
,	O
such	O
as	O
virtual	O
L2	O
and	O
L3	O
overlays	O
and	O
security	O
groups	O
.	O
</s>
<s>
OVN	B-General_Concept
is	O
a	O
network	B-Protocol
virtualization	I-Protocol
platform	O
that	O
separates	O
the	O
physical	O
network	O
topology	O
from	O
the	O
logical	O
one	O
.	O
</s>
<s>
OVN	B-General_Concept
uses	O
Open	B-Language
vSwitch	I-Language
for	O
its	O
switching	O
fabric	O
and	O
uses	O
tunnels	O
to	O
provide	O
the	O
logical/physical	O
separation	O
.	O
</s>
<s>
Open	O
source	O
bindings	O
for	O
OVN	B-General_Concept
are	O
available	O
for	O
a	O
number	O
of	O
platforms	O
,	O
such	O
as	O
OpenStack	O
and	O
Kubernetes	O
.	O
</s>
<s>
OVN	B-General_Concept
is	O
the	O
software-defined	O
networking	O
platform	O
used	O
in	O
a	O
number	O
of	O
Red	O
Hat	O
products	O
,	O
including	O
Red	O
Hat	O
Virtualization	O
,	O
OpenStack	O
,	O
and	O
OpenShift	O
.	O
</s>
<s>
OVN	B-General_Concept
is	O
written	O
in	O
platform-independent	O
C	B-Language
language	I-Language
,	O
which	O
provides	O
easy	O
portability	O
to	O
various	O
environments	O
.	O
</s>
<s>
The	O
source	O
code	O
is	O
licensed	O
under	O
the	O
Apache	B-Application
License	I-Application
2.0	I-Application
.	O
</s>
<s>
As	O
of	O
May	O
2018	O
,	O
features	O
provided	O
by	O
OVN	B-General_Concept
include	O
the	O
following	O
:	O
</s>
