<s>
Label	B-Protocol
Distribution	I-Protocol
Protocol	I-Protocol
(	O
LDP	O
)	O
is	O
a	O
protocol	O
in	O
which	O
routers	O
capable	O
of	O
Multiprotocol	B-Protocol
Label	I-Protocol
Switching	I-Protocol
(	O
MPLS	B-Protocol
)	O
exchange	O
label	O
mapping	O
information	O
.	O
</s>
<s>
LDP	O
is	O
used	O
to	O
build	O
and	O
maintain	O
LSP	O
databases	O
that	O
are	O
used	O
to	O
forward	O
traffic	O
through	O
MPLS	B-Protocol
networks	O
.	O
</s>
<s>
LDP	O
can	O
be	O
used	O
to	O
distribute	O
the	O
inner	O
label	O
(	O
VC/VPN/service	O
label	O
)	O
and	O
outer	O
label	O
(	O
path	O
label	O
)	O
in	O
MPLS	B-Protocol
.	O
</s>
<s>
of	O
distributing	O
labels	O
in	O
an	O
MPLS	B-Protocol
environment	O
.	O
</s>
<s>
LDP	O
relies	O
on	O
the	O
underlying	O
routing	O
information	O
provided	O
by	O
an	O
IGP	B-Protocol
in	O
order	O
to	O
forward	O
label	O
packets	O
.	O
</s>
