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Table Of Contents
Cisco SFP and SFP+ Transceiver Module Installation Notes
Statement 1071—Warning Definition
Installing SFP and SFP+ Transceiver Modules
Removing SFP and SFP+ Transceiver Modules
Standards and Compliance Specifications for SFP and SFP+ Optical Transceivers
Statement 1008—Class 1 Laser Product
Statement 1014—Laser Radiation
Statement 1030—Equipment Installation
Obtaining Documentation and Submitting a Service Request
Cisco SFP and SFP+ Transceiver Module Installation Notes
Revised: September 13, 2012
This installation note provides the installation instructions for the Cisco small form-factor pluggable (SFP) and SFP+ transceiver modules. These transceiver modules are hot-swappable input/output (I/O) devices that plug into 100BASE, 1000BASE and 10GBASE ports (for SFP+), which connect the module port with the fiber-optic or copper network.
Contents
This document contains these sections:
•
Installing SFP and SFP+ Transceiver Modules
•
Removing SFP and SFP+ Transceiver Modules
•
Obtaining Documentation and Submitting a Service Request
Overview
The SFP transceiver modules are hot-pluggable I/O devices that plug into module sockets. The transceiver connects the electrical circuitry of the module with the optical or copper network.
You can use any combination of SFP transceiver modules that your Cisco device supports. The only restrictions are that each port must match the wavelength specifications on the other end of the cable and that the cable must not exceed the stipulated cable length for reliable communications.
Use only Cisco SFP transceiver modules on your Cisco device. Each SFP transceiver module supports the Cisco Quality Identification (ID) feature which allows a Cisco switch or router to identify and validate that the transceiver module is certified and tested by Cisco.
An optical SFP transceiver module is shown in Figure 1.
Figure 1 SFP Transceiver Module (Fiber-Optic LC Connector)
Note
SFP transceiver modules that operate with single-strand SMF, have only one optical bore; the other bore is blocked off.
A copper SFP transceiver module in shown in Figure 2.
Figure 2 1000BASE-T SFP Transceiver Module (RJ-45 Connector)
An SFP+ transceiver module is shown in Figure 3.
Figure 3 SFP+ Transceiver Module (Fiber-Optic LC Connector)
The product numbers and brief description of the SFP and SFP+ transceiver modules are listed in Table 1.
The SFP+ and SFP transceiver module cabling and optical transmit and receive specifications are listed in Table 2 through Table 9.
Table 2 SFP+ Optical Transceiver Module Cabling Specifications
SFP+ Transceiver Module Model Wavelength (nm) Fiber Type Core Size (µm)1 Modal Bandwidth (MHz/km)2 Cable Distance (ft/m)SFP-10G-SR
SFP-10G-SR-X850
MMF
62.5
62.5
50.0
50.0
50.0
50.0160 (FDDI)
200 (OM1)
400 (400/400)
500 (OM2)
2000 (OM3)
4700 (OM4)85/26
108/33
216/66
269/82
984/300
1312/400SFP-10G-LR
SFP-10G-LR-X1310
SMF
G.652
—
6.2 miles (10 km)
SFP-10G-LRM
1310
MMF
SMF
62.5
50.0
50.0G.652
500
400
500—
722/220
328/100
722/220984/300
SFP-10G-ER
1550
SMF
G.652
—
24.86 miles (40 km)3
SFP-10G-ZR
1550
SMF
G.652
—
49.72 miles (80 km)
1 G.652, listed under core size for single mode fiber (SMF), refers to a ITU-T standard of commonly deployed non-dispersion-shifted single mode fiber with a core size of approximately 8 to 10 microns (µm).
2 At specified wavelength.
3 For distances up to 30 km, no special link design rules need to be considered. Link distances beyond 30 km require that you verify the cable characteristics, especially the cable's loss value.
Table 3 SFP+ Transceiver Module Optical Transmit and Receive Specifications
SFP+ Transceiver Module Model Transceiver Type Transmit
Power (dBm) Receive Power (dBm) Transmit and Receive Wavelength (nm)SFP-10G-SR
SFP-10G-SR-X10GBASE-SR, 850-nm MMF
-1.3 (Max)
-7.3 (Min)-1.0 (Max)
-9.9 (Min)840 to 860
SFP-10G-LR
SFP-10G-LR-X10GBASE-LR, 1310-nm SMF
0.5 (Max)
-8.2 (Min)0.5 (Max)
-14.4 (Min)1260 to 1355
SFP-10G-LRM
10GBASE-LRM, 1310-nm MMF and SMF
0.5 (Max)
-6.5 (Min)0.5 (Max)
-8.4 (Min average)
-6.4 (Min in OMA)1260 to 1355
SFP-10G-ER1
10GBASE-ER, 1550-nm SMF
4.0 (Max)
-4.7 (Min)-1.0 (Max)
-15.8 (Min)1530 to 1565
SFP-10G-ZR2
10GBASE-ZR, 1550-nm SMF
4.0 (Max)
0 (Min)3-7.0 (Max)
-24.0 (Min)1530 to 1565
1 Requires a 5-dB, 1550-nm, fixed loss attenuator for distances less than 20 km.
2 Requires a 5- or 10-dB fixed loss attenuator for distances less than 40 km. Please keep receive power below -7 dBm.
3 Receiver sensitivity for 10G Ethernet links with no FEC. With FEC-capable receiver ports and for OTU2/OTU2e links, receiver sensitivity is improved to -27 dBm. Also a 3 dB dispersion penalty should be taken into account for both FEC and non-FEC cases.
Table 4 100-Mb and 1-Gigabit Optical SFP Transceiver Module
Cabling Specifications SFP Module Model Wavelength (nanometers) Fiber Type Core Size (micron)1 Modal Bandwidth (MHz/km) Cable DistanceGLC-SX-MM
SFP-GE-S
GLC-SX-MM-RGD
GLC-SX-MMD850
MMF
62.5
62.5
50.0
50.0
50.0160
200
400
500
2000722 feet (220 m)
902 feet (275 m)
1640 feet (500 m)
1804 feet (550 m)
3281 feet (1 km)GLC-LH-SM
SFP-GE-L
GLC-LX-SM-RGD
GLC-LH-SMD1310
MMF2
SMF62.5
50.0
50.0
G.652500
400
500
—1804 feet (550 m)
1804 feet (550 m)
1804 feet (550 m)
6.2 miles (10 km)GLC-BX-D
GLC-2BX-D1490 (downstream)
SMF
G.652
—
6.2 miles (10 km)
GLC-BX-U
1310 (upstream)
SMF
G.652
—
6.2 miles (10 km)
GLC-EX-SMD
1310
SMF
G.652
—
24.9 miles (40 km)
GLC-ZX-SM
GLC-ZX-SM-RGD
SFP-GE-Z
GLC-ZX-SMD1550
SMF
G.652
—
43.4 to 62 miles
(70 to 100 km)GLC-FE-100FX
GLC-FE-100FX-RGD1310
MMF
62.5
62.5
50.0
50.0160
200
400
5001.24 miles (2 km)
GLC-FE-100LX
GLC-FE-100LX-RGD1310
SMF
G.652
—
6.2 miles (10 km)
GLC-FE-100BX-D
1550 (downstream)
SMF
G.652
—
6.2 miles (10 km)
GLC-FE-100BX-U
1310 (upstream)
SMF
G.652
—
6.2 miles (10 km)
GLC-FE-100EX
1310
SMF
G.652
—
24.9 miles (40 km)
GLC-FE-100ZX
1550
SMF
G.652
—
49.7 miles (80 km)
1 G.652, listed under core size for single mode fiber (SMF), refers to a ITU-T standard of commonly deployed non-dispersion-shifted single mode fiber with a core size of approximately 8 to 10 microns (µm).
2 A mode-conditioning patch cord is required at all times per IEEE specifications.
Note
For the GLC-ZX-SM, the minimum attenuation between the transmit bore (TX) and the receive bore (RX) is 8 dB. When using shorter distances of single-mode fiber cable, you might need to insert an inline optical attenuator in the link to avoid overloading the receiver.
Copper SFP transceiver modules can operate at 10, 100, or 1000 Mbps on some Cisco devices. To find the supported speeds for the 1000BASE-T SFP transceiver modules in your Cisco device, see the Compatibility Matrix for 1000BASE-T Small Form-Factor Pluggable Modules.
Copper 1000BASE-T SFP transceiver modules use standard four twisted-pair, Category 5 cable at lengths up to 328.08 feet (100 meters).
Table 6 SONET/SDH Optical SFP Transceiver Module Cabling Specifications
SFP Module Model Wavelength (nanometers) Fiber Type Core Size (micron)1 Modal Bandwidth (MHz/km) Cable DistanceSFP-OC3-MM
1310
MMF
62.5 50.0
500
5001.24 miles (2 km)
1.24 miles (2 km)SFP-OC3-SR
1310
SMF
G.652
—
1.24 miles (2 km)
SFP-OC3-IR1
1310
SMF
G.652
—
9.3 miles (15 km)
SFP-OC3-LR1
1310
SMF
G.652
—
24.9 miles (40 km)
SFP-OC3-LR2
1550
SMF
G.652
—
49.7 miles (80 km)
SFP-OC12-MM
1310
MMF
62.5
50.0500
5001640 feet (500 m)
1640 feet (500 m)SFP-OC12-SR
1310
SMF
G.652
—
1.24 miles (2 km)
SFP-OC12-IR1
1310
SMF
G.652
—
9.3 miles (15 km)
SFP-OC12-LR1
1310
SMF
G.652
—
24.9 miles (40 km)
SFP-OC12-LR2
1550
SMF
G.652
—
49.7 miles (80 km)
SFP-OC48-SR
1310
SMF
G.652
—
1.24 miles (2 km)
SFP-OC48-IR1
1310
SMF
G.652
—
9.3 miles (15 km)
SFP-OC48-LR2
1550
SMF
G.652
—
49.7 miles (80 km)
1 G.652, listed under core size for single mode fiber (SMF), refers to a ITU-T standard of commonly deployed non-dispersion-shifted single mode fiber with a core size of approximately 8 to 10 microns (µm).
Table 10 10-Gigabit DWDM SFP+ Transceiver Module Optical Parameters
Parameter Symbol Minimum Typical Maximum Units Notes and Conditions TransmitterSpectral width
0.2
nm
Full width, -20 dB from maximum, with resolution bandwidth (RBW)=0.01 nm
Transmitter center wavelength
x-100
x
x+100
Pm
See Table 1 for center wavelengths
Side-mode suppression ratio
SMSR
30
dB
Transmitter extinction ratio
9
dB
Transmitter optical output power
Pout
-1.0
3.0
dBm
Average power coupled into single-mode fiber
ReceiverReceiver optical input wavelength
1530
1565
nm
Receiver damage threshold
4.0
dBm
Receiver overload
-7
dBm
Note
Up to 1600 ps/nm chromatic dispersion is supported for fiber links between two Cisco DWDM SFP+ transceiver modules. For connections between a Cisco DWDM SFP+ transceiver module and a Cisco DWDM XENPAK, X2, or XFP transceiver module, limit the chromatic dispersion to 1300 ps/nm.
Safety
Safety warnings appear throughout this publication in procedures that may harm you if performed incorrectly or are ignored. A warning symbol precedes each warning statement.
Statement 1071—Warning Definition
WarningClass 1 laser product. Statement 1008
WarningLaser radiation is present when the system is open and interlocks bypassed. Statement 1014
WarningOnly trained and qualified personnel should be allowed to install, replace, or service this equipment. Statement 1030
Required Tools
You will need these tools to install the SFP transceiver module:
•
Wrist strap or other personal grounding device to prevent ESD occurrences.
•
Antistatic mat or antistatic foam to set the transceiver on.
•
Fiber-optic end-face cleaning tools and inspection equipment. For complete information on inspecting and cleaning fiber-optic connections, see the white-paper document at this URL:
http://www.cisco.com/en/US/tech/tk482/tk876/technologies_white_paper09186a0080254eba.shtml
Installing SFP and SFP+ Transceiver Modules
SFP transceiver modules can have three types of latching devices to secure an SFP transceiver module in a port socket:
•
Figure 4 shows an SFP transceiver module with a Mylar tab latch.
•
Figure 5 shows an SFP transceiver module with an actuator button latch.
•
Figure 6 shows an SFP transceiver module that has a bail clasp latch.
•
Figure 7 shows an SFP+ transceiver module that has a bail clasp latch.
Determine which type of latch your SFP transceiver module uses before following the installation and removal procedures.
CautionDo not install or remove the SFP transceiver module with fiber-optic cables still attached to it. Doing so may damage cables, cable connectors, or the optical interfaces and may interfere with the SFP transceiver module latching properly into its socket connector. Disconnect all cables before removing or installing an SFP transceiver module.
Removing and installing an SFP transceiver module can shorten its useful life. Do not remove and insert SFP transceiver modules more often than is absolutely necessary.
CautionThe SFP transceiver modules are static sensitive devices. Always use an ESD wrist strap or similar individual grounding device when handling SFP transceiver modules or coming in contact with modules.
Figure 4 SFP Transceiver Module with a Mylar Tab Latch
Figure 5 SFP Transceiver Module with an Actuator Button Latch
Figure 6 SFP Module with a Bail Clasp Latch
Figure 7 SFP+ Module with a Bail Clasp Latch
To install an SFP transceiver module, follow these steps:
Step 1
Attach an ESD-preventive wrist strap to your wrist and to the ESD ground connector or a bare metal surface on your chassis.
Step 2
Remove the SFP transceiver module from its protective packaging.
Note
Do not remove the optical bore dust plugs until directed to do so later in the procedure.
Step 3
Check the label on the SFP transceiver module body to verify that you have the correct model for your network.
Step 4
Find the send (TX) and receive (RX) markings that identify the top side of the SFP transceiver module.
Note
On some SFP transceiver modules, the TX and RX marking might be replaced by arrowheads pointing from the SFP transceiver module connector (transmit direction or TX) and toward the connector (receive direction or RX).
Step 5
Position the SFP transceiver module in front of the socket opening.
Note
Different Cisco devices have different SFP module socket configurations. Your Cisco device could have either a latch-up or a latch-down orientation. Ensure that you are installing the SFP transceiver module in the correct orientation for your Cisco device. For more details, see the hardware installation instructions that came with your Cisco device.
Step 6
Holding it as shown in Figure 8, insert the SFP into the socket until you feel the connector latch into place.
Figure 8 Inserting an SFP Transceiver Module into a Module Socket
Step 7
Press the SFP into the slot firmly with your thumb as shown in Figure 9.
Note
For SFP transceiver modules equipped with an actuator latch, you must press firmly on both the transceiver faceplate and the actuator button to ensure that the transceiver is properly latched in the socket.
Figure 9 Latching the SFP
Step 8
To verify that the SFP is seated and latched properly:
a.
Grasp the SFP as shown in Figure 10 and try to remove it without releasing the latch.
b.
If the SFP can not be removed, it is installed and seated properly. If the SFP can be removed, reinsert it and press harder with your thumb, repeating if necessary until it is latched securely into the socket.
Figure 10 Verifying SFP Installation
Note
For optical SFP transceiver modules, before removing the dust plugs and making any optical connections, observe the following guidelines:
•
Always keep the protective dust plugs on the unplugged fiber-optic cable connectors and the transceiver optical bores until you are ready to make a connection.
•
Always inspect and clean the LC connector end-faces just before making any connections. See the Tip on this page for a pointer to a fiber-optic inspection and cleaning white paper.
•
Always grasp the LC connector housing to plug or unplug a fiber-optic cable.
Step 9
Remove the dust plugs from the network interface cable LC connectors. Save the dust plugs for future use.
Step 10
Inspect and clean the LC connector's fiber-optic end-faces. See the following Tip for a pointer to a fiber-optic inspection and cleaning white paper.
Tip
For complete information on inspecting and cleaning fiber-optic connections, see the white-paper document at this URL:
http://www.cisco.com/en/US/tech/tk482/tk876/technologies_white_paper09186a0080254eba.shtml
Step 11
Remove the dust plugs from the SFP transceiver module optical bores.
Step 12
Immediately attach the network interface cable LC connector to the SFP transceiver module.
Step 13
To connect 1000BASE-T SFP transceiver modules to a copper network, follow these substeps:
CautionTo comply with GR-1089 intrabuilding lightning immunity requirements, you must use grounded, shielded, twisted-pair Category 5 cabling.
a.
Insert the Category 5 network cable RJ-45 connector into the SFP transceiver module RJ-45 connector.
Note
When connecting to a 1000BASE-T-compatible server, workstation, or router, use four twisted-pair, straight-through Category 5 cabling for the SFP transceiver module port. When connecting to a 1000BASE-T-compatible switch or repeater, use four twisted-pair, crossover Category 5 cabling.
b.
Insert the other end of the network cable into an RJ-45 connector on a 1000BASE-T-compatible target device.
Step 14
Observe the port status LED:
•
The LED turns green when the SFP transceiver module and the target device have an established link.
•
The LED turns amber while the STP feature discovers the network topology and searches for loops. This process takes about 30 seconds, and then the LED turns green.
•
If the LED is off, the target device might not be turned on, there might be a cable problem, or there might be a problem with the adapter installed in the target device. See the Troubleshooting section of your switch hardware guide for solutions to cabling problems.
Step 15
Reconfigure and reboot the target device if necessary.
Removing SFP and SFP+ Transceiver Modules
CautionThe SFP and SFP+ transceiver modules are static sensitive devices. Always use an ESD wrist strap or similar individual grounding device when handling the transceiver modules or coming in contact with modules.
CautionBe careful when removing GLC-GE-100FX SFPs from a WS-C3750G-12S-S switch. The SFP transceiver module temperature might go over 160°F (70°C) and be too hot to touch with bare hands.
If you are removing an SFP or SFP+ transceiver module, follow these steps:
Step 1
Attach an ESD-preventive wrist strap to your wrist and to the ESD ground connector or a bare metal surface on your chassis.
Step 2
Disconnect the network fiber-optic cable or network copper cable from the transceiver module connector. For optical transceiver modules, immediately reinstall the dust plugs in the transceiver module's optical bores and the fiber-optic cable LC connectors.
Tip
For reattachment of fiber-optic cables, note which connector plug is send (TX) and which is receive (RX).
Step 3
Release and remove the transceiver module from the socket connector, as shown in Figure 11, Figure 12, Figure 13, or
•
If the SFP transceiver module has a Mylar tab latch, pull the tab gently in a slightly downward direction until the transceiver disengages from the socket connector, and then pull the SFP transceiver module straight out. Do not twist or pull the Mylar tab because you could detach it from the SFP transceiver module.
Figure 11 Removing an SFP Transceiver Module Equipped with a Mylar Tab
•
If the SFP transceiver module has an actuator button latch, gently press the actuator button on the front of the SFP transceiver module until it clicks and the latch mechanism releases the SFP transceiver module from the socket connector. Grasp the actuator button between your thumb and index finger, and carefully pull the SFP transceiver module straight from the module slot.
Figure 12 Removing an SFP Transceiver Module Equipped with an Actuator Button Latch
•
If the SFP transceiver module has a bail clasp latch, pull the latch out and down to eject the SFP transceiver module from the socket connector. If the bail clasp latch is obstructed and you cannot use your index finger to open it, use a small, flat-blade screwdriver or other long, narrow instrument to open the bail clasp latch. Grasp the SFP transceiver module between your thumb and index finger, and carefully remove it from the socket.
Figure 13 Removing an SFP Transceiver Module Equipped with a Bail Clasp Latch
•
The SFP+ transceiver uses a bail clasp style latch which is slightly different than the bail clasp latch for the SFP transceiver. The SFP+ transceiver bail clasp has a small tab protruding down from the bail clasp handle To release the SFP+ bail clasp, push the small tab up and outwards with your index finger to release the bail clasp. Grasp the SFP+ transceiver between your thumb and index finger and carefully remove the transceiver from the socket.
Figure 14 Removing an SFP+ Transceiver Equipped with a Bail Clasp Latch with Tab
Step 4
Place the removed transceiver module in an antistatic bag or other protective environment.
Standards and Compliance Specifications for SFP and SFP+ Optical Transceivers
This section provides compliance information for the SFP and SFP+ optical transceivers.
FCC Class A Compliance
This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part 15 of the FCC rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio-frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference, in which case users will be required to correct the interference at their own expense.
You can determine whether your equipment is causing interference by turning it off. If the interference stops, it was probably caused by the Cisco equipment or one of its peripheral devices. If the equipment causes interference to radio or television reception, try to correct the interference by using one or more of the following measures:
•
Turn the television or radio antenna until the interference stops.
•
Move the equipment to one side or the other of the television or radio.
•
Move the equipment farther away from the television or radio.
•
Plug the equipment into an outlet that is on a different circuit from the television or radio. (That is, make certain the equipment and the television or radio are on circuits controlled by different circuit breakers or fuses.)
Modifications to this product not authorized by Cisco Systems could void the FCC approval and negate your authority to operate the product.
Class 1 Laser Compliance
This product has been tested and found to comply with the limits for Class 1 laser for IEC60825, EN60825, and 21CFR1040 specifications.
Translated Safety Warnings
This section repeats in multiple languages the basic warnings that appear in this document.
Statement 1008—Class 1 Laser Product
Warning![]()
Class 1 laser product.
Waarschuwing
Klasse-1 laser produkt.
Varoitus
Luokan 1 lasertuote.
Attention
Produit laser de classe 1.
Warnung
Laserprodukt der Klasse 1.
Avvertenza
Prodotto laser di Classe 1.
Advarsel
Laserprodukt av klasse 1.
Aviso
Produto laser de classe 1.
¡Advertencia!
Producto láser Clase I.
Varning!
Laserprodukt av klass 1.
Aviso
Produto a laser de classe 1.
Advarsel
Klasse 1 laserprodukt.
Statement 1014—Laser Radiation
Warning![]()
Laser radiation is present when the system is open and interlocks bypassed.
Waarschuwing
Laserstraling is aanwezig wanneer het systeem open is en onderlinge vergrendelingen ongedaan zijn gemaakt.
Varoitus
Lasersäteitä järjestelmän ollessa avoinna ja suojalukituksen ohitettuna.
Attention
Production d'un rayonnement laser en position ouverte avec les verrouillages désactivés.
Warnung
Laserstrahlung in geöffnetem Zustand oder bei deaktivierter Verriegelung.
Avvertenza
Emissione di radiazioni laser quando il sistema è aperto e i dispositivi di blocco sono disattivati.
Advarsel
Laserstråling er til stede når enheten er åpen og låsemekanismene er omgått.
Aviso
Radiação presente quando o sistema estiver aberto e os bloqueios estiverem desviados.
¡Advertencia!
Radiación láser presente si el sistema está abierto y con los enclavamientos desirados.
Varning!
Laserstrålning pågår när enheten är öppen och förregleringen är förbikopplad.
Statement 1030—Equipment Installation
Warning![]()
Only trained and qualified personnel should be allowed to install, replace, or service this equipment.
Waarschuwing
Deze apparatuur mag alleen worden geïnstalleerd, vervangen of hersteld door bevoegd geschoold personeel.
Varoitus
Tämän laitteen saa asentaa, vaihtaa tai huoltaa ainoastaan koulutettu ja laitteen tunteva henkilökunta.
Attention
Il est vivement recommandé de confier l'installation, le remplacement et la maintenance de ces équipements à des personnels qualifiés et expérimentés.
Warnung
Das Installieren, Ersetzen oder Bedienen dieser Ausrüstung sollte nur geschultem, qualifiziertem Personal gestattet werden.
Avvertenza
Questo apparato può essere installato, sostituito o mantenuto unicamente da un personale competente.
Advarsel
Bare opplært og kvalifisert personell skal foreta installasjoner, utskiftninger eller service på dette utstyret.
Aviso
Apenas pessoal treinado e qualificado deve ser autorizado a instalar, substituir ou fazer a revisão deste equipamento.
¡Advertencia!
Solamente el personal calificado debe instalar, reemplazar o utilizar este equipo.
Varning!
Endast utbildad och kvalificerad personal bör få tillåtelse att installera, byta ut eller reparera denna utrustning.
Aviso
Somente uma equipe treinada e qualificada tem permissão para instalar, substituir ou dar manutenção a este equipamento.
Advarsel
Kun uddannede personer må installere, udskifte komponenter i eller servicere dette udstyr.
Obtaining Documentation and Submitting a Service Request
For information on obtaining documentation, submitting a service request, and gathering additional information, see the monthly What's New in Cisco Product Documentation, which also lists all new and revised Cisco technical documentation, at:
http://www.cisco.com/en/US/docs/general/whatsnew/whatsnew.html
Subscribe to the What's New in Cisco Product Documentation as a Really Simple Syndication (RSS) feed and set content to be delivered directly to your desktop using a reader application. The RSS feeds are a free service and Cisco currently supports RSS version 2.0.
Cisco and the Cisco logo are trademarks or registered trademarks of Cisco and/or its affiliates in the U.S. and other countries. To view a list of Cisco trademarks, go to this URL: www.cisco.com/go/trademarks. Third-party trademarks mentioned are the property of their respective owners. The use of the word partner does not imply a partnership relationship between Cisco and any other company. (1110R)
Copyright © 2003-2012, Cisco Systems, Inc. All rights reserved.
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