Cisco
SFP (Small Form-factor Pluggable) предназначены для
установки в слот маршрутизатора или
коммутатора и обеспечивают подключение
его к сети с помощью нужного интерфейса.
Конверторы SFP поддерживают режим
горячей замены (hot-swap). Выускаются
различные модули, позволяющие
подключить необходимое оборудование к
различным средам передачи: многомодовое
оптоволокно , одномодовое оптоволокно,
витая пара.
Модуль GLC-ZX-SM cтандарта
1000BASE-ZX SFP работает на стандартном
ономодовом оптоволокне на расстояния до
70 км. При использовании оптоволокна
повышенного качества протяженность
линии может достигать 100 км.
Максимальное расстояние зависит от
качества оптоволокна, количества сварок,
качества разъемов.
Если модуль используется на расстояниях
меньше, чем 25-30 км, необходимо
предусмотреть установку оптических
аттенюаторов на обоих концах оптической
линии, это позволит избежать перегрузки
модуля приемника в конверторе.
Основные
возможности:
Introduction
The
industry-standard Cisco® Small Form-factor Pluggable (SFP) Gigabit
Interface Converter is a hot-swappable input/output device that plugs into
a Gigabit Ethernet port or slot, linking the port with the network (Figure
1). SFPs can be used and interchanged on a wide variety of Cisco Systems®
products and can be intermixed in combinations of 1000BASE-SX,
1000BASE-LX/LH, 1000BASE-ZX, or 1000BASE-BX10-D/U on a port-by-port basis.
- 1000BASE-SX
SFP FOR MULTIMODE FIBER ONLY
The 1000BASE-SX SFP, compatible with the IEEE 802.3z 1000BASE-SX
standard, operates on 50 ?m multimode fiber links up to 550 m and on
62.5 ?m FDDI-grade multimode fibers up to 220m.
- 1000BASE-LX/LH
SFP FOR BOTH MULTIMODE AND SINGLE-MODE FIBERS
The 1000BASE-LX/LH SFP, compatible with the IEEE 802.3z 1000BASE-LX
standard, operates on standard single-mode fiber-optic link spans of
up to 10 km and up to 550 m on any multimode fibers.
- 1000BASE-ZX
SFP FOR LONG-REACH SINGLE-MODE FIBERS
The 1000BASE-ZX SFP operates on standard single-mode fiber-optic link
spans of up to approximately 70 km in length. The SFP provides an
optical link budget of 23 dB, but the precise link span length depends
on multiple factors such as fiber quality, number of splices, and
connectors.
When shorter distances of single-mode fiber are used, it may be
necessary to insert an inline optical attenuator in the link to avoid
overloading the receiver. A 10-dB inline optical attenuator should be
inserted between the fiber-optic cable plant and the receiving port on
the SFP at each end of the link whenever the fiber-optic cable span
loss is less than 8 dB.
- 1000BASE-BX10-D
AND 1000BASE-BX10-U SFP FOR SINGLE-FIBER BIDIRECTIONAL APPLICATIONS
The 1000BASE-BX-D and 1000BASE-BX-U SFPs, compatible with the IEEE
802.3ah 1000BASE-BX10-D and 1000BASE-BX10-U standards, operate on a
single strand of standard single-mode fiber.
- A
1000BASE-BX10-D device is always connected to a 1000BASE-BX10-U device
with a single strand of standard single-mode fiber with an operating
transmission range up to 10 km.
The communication over a single strand of fiber is achieved by
separating the transmission wavelength of the two devices as depicted
in Figure 2: 1000BASE-BX10-D transmits a 1490 nm channel and receives
a 1310 nm signal, whereas 1000BASE-BX10-U transmits at a 1310 nm
wavelength and receives a 1490 nm signal. Note in Figure 2 the
presence of a wavelength-division multiplexing (WDM) splitter
integrated into the SFP to split the 1310 nm 1490 nm light paths.
The
GLC-BX-D and GLC-BX-U SFPs also support digital optical monitoring (DOM)
functions according to the industry-standard SFF-8724 Multi Source
Agreement (MSA). This feature gives the end user the ability to monitor
real-time parameters of the SFP, such as optical output power, optical
input power, temperature, laser bias current, and transceiver supply
voltage.
TECHNICAL
SPECIFICATIONS
Platform
Support
The Cisco SFPs are supported across a variety of Cisco switches, routers,
and optical transport devices. For more details refer to the document SFP
Compatibility Matrix.
Connectors
and Cabling
Connectors include the following:
- Dual
LC/PC connector (1000BASE-SX, 1000BASE-LX/LH, and 1000BASE-ZX)
- Single
LC/PC connector (1000BASE-BX-D and 1000BASE-BX-U)
Note: Only
connections with patch cords with PC or UPC connectors are supported.
Patch cords with APC connectors are not supported.
Note: Patch
Cables need to be compliant with GR326.
SFP
Port Cabling Specifications
Product
|
Wavelength
(nm)
|
Fiber
Type
|
Core
Size (?m)
|
Modal
Bandwidth (MHz* Km)
|
Operating
Distance (m)
|
1000BASE-SX
|
850
|
MMF
|
62.5
|
160
|
220
(722 ft)
|
62.5
|
200
|
275
(902 ft)
|
50
|
400
|
500
(1,640 ft)
|
50
|
500
|
550
(1,804 ft)
|
1000BASE-LX/LH
|
1310
|
MMF*
|
62.5
|
500
|
550
(1,804 ft)
|
50
|
400
|
550
(1,804 ft)
|
50
|
500
|
550
(1,804 ft)
|
SMF
|
-**
|
-
|
10,000
(32,8210 ft)
|
1000BASE-ZX
|
1550
|
SMF
|
-
|
-
|
Approximately
70 km depending on link loss
|
1000BASE-BX-D
|
1310
|
SMF
|
-**
|
-
|
10,000
(32,821 ft)
|
1000BASE-BX-U
|
1490
|
SMF
|
-**
|
-
|
10,000
(32,821 ft)
|
*
A mode-conditioning patch cord, as specified by the IEEE standard, is
required regardless of the span length. Note how the mode conditioning
patch cord for 62.5 ?m
fibers has a different specification from the mode-conditioning patch
cord for 50 ?m
fibers.
**
ITU-T G.652 SMF as specified by the IEEE 802.3z standard.
Optical
Specifications
Table
2. Main Optical Parameters
Product
|
Transmit
Power (dBm)
|
Receive
Power Range (dBm)
|
1000BASE-SX
|
-3
to -9.5
|
0
to -17
|
1000BASE-LX/LH
|
-3
to -9.5
|
-3
to -20
|
1000BASE-ZX
|
+5
to 0
|
0
to -23
|
1000BASE-BX10-D
1000BASE-BX10-U
|
-3
to -9
|
-3
to -19.5
|
Dimensions
Dimensions
(H x W x D): 8.5 x 13.4 x 56.5 mm
Environmental
Conditions and Power Requirements
Operating
temperature range:
.
Commercial temperature range (COM): 0 to 70°C (32 to 158°F)
.
Extended temperature range (EXT): -5°C to 85°C (23 to 185°F)
.
Storage temperature range: -40 to 85°C (-40 to 185°F)
Table
3 gives electrical parameters and Table 4 gives temperature range and
DOM support information for the SFPs.
Electrical
Parameters
Parameter
|
Symbol
|
Minimum
|
Typical
|
Maximum
|
Units
|
Supply
Current
|
Is
|
-
|
200
|
300
|
mA
|
Surge
Current
|
ISurge
|
-
|
-
|
30
|
mA
|
Input
Voltage
|
Vcc
|
3.1
|
3.3
|
3.5
|
V
|
Temperature
Range and DOM Support
Product
Number
|
Temperature
Range
|
DOM
|
GLC-SX-MM
|
COM
|
No
|
GLC-LH-SM
|
COM
|
No
|
GLC-ZX-SM
|
COM
|
No
|
GLC-BX-U
|
COM
|
Yes
|
GLC-BX-D
|
COM
|
Yes
|
SFP-GE-S
|
EXT
|
Yes
|
SFP-GE-L
|
EXT
|
Yes
|
SFP-GE-Z
|
EXT
|
Yes
|
REGULATORY
AND STANDARD COMPLIANCE
Safety:
.
Laser Class I 21CFR1040 LN#50 7/2001
.
Laser Class I IEC 60825-1
Standards:
.
IEEE 802.3z
.
IEEE 802.3ah
Ordering
Information
Product
Description
|
Product
Number
|
1000BASE-SX
short wavelength; without DOM
|
GLC-SX-MM
|
1000BASE-LX/LH
long-wavelength/long haul; without DOM
|
GLC-LH-SM
|
1000BASE-ZX
extended distance; without DOM
|
GLC-ZX-SM
|
1000BASE-BX10-D
downstream bidirectional single fiber; with DOM
|
GLC-BX-D
|
1000BASE-BX10-U
upstream bidirectional single fiber; with DOM
|
GLC-BX-U
|
1000BASE-SX
short wavelength; with DOM
|
SFP-GE-S
|
1000BASE-LX/LH
short wavelength; with DOM
|
SFP-GE-L
|
1000BASE-ZX;
with DOM
|
SFP-GE-Z
|
Photos
|