<s>
Label	B-General_Concept
Information	I-General_Concept
Base	I-General_Concept
(	O
LIB	O
)	O
is	O
the	O
software	O
table	O
maintained	O
by	O
IP/MPLS	B-Protocol
capable	O
routers	B-Protocol
to	O
store	O
the	O
details	O
of	O
port	O
and	O
the	O
corresponding	O
MPLS	B-Protocol
router	B-Protocol
label	O
to	O
be	O
popped/pushed	O
on	O
incoming/outgoing	O
MPLS	B-Protocol
packets	O
.	O
</s>
<s>
LIB	O
functions	O
in	O
the	O
control	O
plane	O
of	O
router	B-Protocol
's	O
MPLS	B-Protocol
layer	O
.	O
</s>
