<s>
A	O
first	O
hop	O
redundancy	O
protocol	O
(	O
FHRP	B-Protocol
)	O
is	O
a	O
computer	B-Architecture
networking	I-Architecture
protocol	O
which	O
is	O
designed	O
to	O
protect	O
the	O
default	B-Protocol
gateway	I-Protocol
used	O
on	O
a	O
subnetwork	B-Protocol
by	O
allowing	O
two	O
or	O
more	O
routers	B-Protocol
to	O
provide	O
backup	O
for	O
that	O
address	O
;	O
in	O
the	O
event	O
of	O
failure	O
of	O
an	O
active	O
router	B-Protocol
,	O
the	O
backup	O
router	B-Protocol
will	O
take	O
over	O
the	O
address	O
,	O
usually	O
within	O
a	O
few	O
seconds	O
.	O
</s>
<s>
In	O
practice	O
,	O
such	O
protocols	O
can	O
also	O
be	O
used	O
to	O
protect	O
other	O
services	O
operating	O
on	O
a	O
single	O
IP	B-Protocol
address	I-Protocol
,	O
not	O
just	O
routers	B-Protocol
.	O
</s>
