<s>
The	O
XFP	B-Protocol
(	O
10	O
gigabit	O
small	B-Protocol
form-factor	I-Protocol
pluggable	I-Protocol
)	O
is	O
a	O
standard	O
for	O
transceivers	O
for	O
high-speed	O
computer	B-Architecture
network	I-Architecture
and	O
telecommunication	O
links	O
that	O
use	O
optical	B-Architecture
fiber	I-Architecture
.	O
</s>
<s>
It	O
was	O
defined	O
by	O
an	O
industry	O
group	O
in	O
2002	O
,	O
along	O
with	O
its	O
interface	O
to	O
other	O
electrical	O
components	O
,	O
which	O
is	O
called	O
XFI	B-Protocol
.	O
</s>
<s>
XFP	B-Protocol
is	O
a	O
slightly	O
larger	O
form	O
factor	O
than	O
the	O
popular	O
small	B-Protocol
form-factor	I-Protocol
pluggable	I-Protocol
transceiver	I-Protocol
,	O
SFP	O
and	O
SFP+	B-Protocol
.	O
</s>
<s>
XFP	B-Protocol
modules	O
are	O
hot	B-Device
swappable	I-Device
and	O
support	O
multiple	O
physical	B-Protocol
layer	I-Protocol
variants	I-Protocol
.	O
</s>
<s>
XFP	B-Protocol
modules	O
use	O
an	O
LC	O
fiber	B-Device
connector	I-Device
type	O
to	O
achieve	O
higher	O
density	O
.	O
</s>
<s>
Principal	O
applications	O
include	O
10	O
Gigabit	O
Ethernet	O
,	O
10Gbit/s	O
Fibre	B-Architecture
Channel	I-Architecture
,	O
synchronous	B-Protocol
optical	I-Protocol
networking	I-Protocol
(	O
SONET	B-Protocol
)	O
at	O
OC-192	O
rates	O
,	O
synchronous	B-Protocol
optical	I-Protocol
networking	I-Protocol
STM-64	B-Protocol
,	O
10Gbit/s	O
Optical	B-Protocol
Transport	I-Protocol
Network	I-Protocol
(	O
OTN	O
)	O
OTU-2	O
,	O
and	O
parallel	O
optics	O
links	O
.	O
</s>
<s>
They	O
can	O
operate	O
over	O
a	O
single	O
wavelength	O
or	O
use	O
dense	O
wavelength-division	B-Architecture
multiplexing	I-Architecture
techniques	O
.	O
</s>
<s>
The	O
XFP	B-Protocol
specification	O
was	O
developed	O
by	O
the	O
XFP	B-Protocol
Multi	O
Source	O
Agreement	O
Group	O
.	O
</s>
<s>
The	O
chair	O
of	O
the	O
XFP	B-Protocol
group	O
was	O
Robert	O
Snively	O
of	O
Brocade	O
Communications	O
Systems	O
,	O
and	O
technical	O
editor	O
was	O
Ali	O
Ghiasi	O
of	O
Broadcom	O
.	O
</s>
<s>
The	O
XFI	B-Protocol
electrical	O
interface	O
specification	O
is	O
a	O
10	O
gigabit	O
per	O
second	O
chip-to-chip	O
electrical	O
interface	O
specification	O
defined	O
as	O
part	O
of	O
the	O
XFP	B-Protocol
multi-source	O
agreement	O
.	O
</s>
<s>
It	O
was	O
also	O
developed	O
by	O
the	O
XFP	B-Protocol
MSA	O
group	O
.	O
</s>
<s>
XFI	B-Protocol
is	O
sometimes	O
pronounced	O
as	O
"	O
X	O
"	O
"	O
F	O
"	O
"	O
I	O
"	O
and	O
other	O
times	O
as	O
"	O
ziffie	O
"	O
.	O
</s>
<s>
XFI	B-Protocol
provides	O
a	O
single	O
lane	O
running	O
at	O
10.3125	O
Gbit/s	O
when	O
using	O
a	O
64B/66B	O
encoding	O
scheme	O
.	O
</s>
<s>
A	O
serializer/deserializer	O
is	O
often	O
used	O
to	O
convert	O
between	O
XFI	B-Protocol
and	O
a	O
wider	O
interface	O
such	O
as	O
XAUI	B-Protocol
that	O
has	O
four	O
lanes	O
running	O
at	O
3.125	O
Gbit/s	O
using	O
8B/10B	B-Protocol
encoding	I-Protocol
.	O
</s>
<s>
The	O
physical	O
dimensions	O
of	O
the	O
XFP	B-Protocol
transceiver	I-Protocol
are	O
slightly	O
larger	O
than	O
the	O
original	O
small	B-Protocol
form-factor	I-Protocol
pluggable	I-Protocol
transceiver	I-Protocol
(	O
SFP	O
)	O
.	O
</s>
<s>
XFP	B-Protocol
are	O
available	O
with	O
a	O
variety	O
of	O
transmitter	O
and	O
receiver	O
types	O
,	O
allowing	O
users	O
to	O
select	O
the	O
appropriate	O
transceiver	O
for	O
each	O
link	O
to	O
provide	O
the	O
required	O
optical	O
reach	O
over	O
the	O
available	O
optical	B-Architecture
fiber	I-Architecture
type	O
(	O
e.g.	O
</s>
<s>
multi-mode	B-Device
fiber	I-Device
or	O
single-mode	B-Device
fiber	I-Device
)	O
.	O
</s>
<s>
XFP	B-Protocol
modules	O
are	O
commonly	O
available	O
in	O
several	O
different	O
categories	O
:	O
</s>
<s>
The	O
XFP	B-Protocol
packaging	O
was	O
smaller	O
than	O
the	O
XENPAK	B-Protocol
form-factor	O
which	O
had	O
been	O
published	O
earlier	O
(	O
by	O
almost	O
a	O
year	O
)	O
.	O
</s>
<s>
Some	O
vendors	O
supported	O
both	O
,	O
or	O
the	O
XENPAK	B-Protocol
follow-ons	O
called	O
XPAK	O
and	O
X2	B-Device
.	O
</s>
