<s>
Overlay	B-Protocol
transport	I-Protocol
virtualization	I-Protocol
(	O
OTV	O
)	O
is	O
a	O
Cisco	O
proprietary	O
protocol	O
for	O
relaying	O
layer	B-Protocol
2	I-Protocol
communications	O
between	O
layer	B-Application
3	I-Application
computer	B-Architecture
networks	I-Architecture
.	O
</s>
