Cisco transceiver modules datasheet for Cisco 10GBASE X2 modules (2023)

Product overview

the place®De 10GBASE

Cisco transceiver modules datasheet for Cisco 10GBASE X2 modules (1)

Illustration 1.

Cisco 10GBASE X2- en Xenpak-module

The main features of the Cisco 10GBASE X2 modules are:

Support for Ethernet 10GBASE

The hot-swap I/O device connects to an X2 Ethernet port on a Cisco switch or router to connect the port to the network

Provides flexibility in interface selection

Supports the pay-as-you-populate model

Supports Cisco's Quality Identification (ID) feature, which allows a Cisco switch or router to identify if the module has been certified and tested by Cisco

Provides optical interoperability with respective 10GBASE Xenpak, 10GBASE XFP, and 10GBASE SFP+ modules on the same link

Cisco X2-10GB-CX4

The Cisco 10GBASE-CX4 module supports link lengths of up to 15 meters over the CX4 cable.

Cisco X2-10GB-T

The Cisco 10GBASE-T module supports link lengths of up to 100 m over CAT6A or CAT7 copper cabling.

Cisco X2-10GB-LRM

(Video) 10G X2 Transceivers

The Cisco 10GBASE-LRM module supports link lengths of 220 m over standard fiber distributed data interface (FDDI) class multimode fiber (MMF). To ensure compliance with FDDI fiber specifications (OM1 and OM2), the transmitter must be linked using a mode-conditioning patch cord. No mode conditioning patch cords are required for applications over OM3. For more information on mode conditioning patch cord requirements, see:

The Cisco 10GBASE-LRM module also supports link lengths of 300 m over standard single-mode fiber (SMF, G.652).

Cisco X2-10GB-LX4

The Cisco 10GBASE-LX4 module supports link lengths of 300 m over standard FDDI class MMF. To ensure compliance with the specifications, the transmitter output must be linked using a mode-conditioning patch cable. For more information on mode conditioning patch cord requirements, see:

Cisco X2-10GB-SR

The Cisco 10GBASE-SR module supports a link length of 26 m over standard FDDI class MMF. Using 2000 MHz*km MMF (OM3), link lengths up to 300m are possible. Using 4700 MHz*km MMF (OM4), link lengths up to 400m are possible.

Cisco X2-10GB-LR

The Cisco 10GBASE-LR module supports a connection length of 10 kilometers over standard single-mode fiber (SMF, G.652).

Cisco X2-10GB-ER

The Cisco 10GBASE-ER module supports a link length of up to 40 kilometers over standard single-mode fiber (SMF, G.652).

Cisco X2-10GB-ZR

Supports connection lengths up to about 80 km in SMF. This interface is not part of the 10 Gigabit Ethernet standard, but meets Cisco's optical specifications.

Technical specifications

platform support

Cisco X2 modules are supported on Cisco switches and routers. For more information, see the Cisco Xenpak/X2 Compatibility Matrix document.

connectors and wiring

Connectors: dual SC/PC connector (-SR, -LR, -LRM, -LX4, -ER, -ZR); Connection InfiniBand 4x (-CX4); RJ-45 (-T) connector.

(Video) How to install and remove 10G SFP+ SR Modules?

Monitoring: Only patch cable connections with PC or UPC connectors are supported for X2 optical modules. Patch cables with APC connectors are not supported. All cables and cable assemblies used must comply with the standards stated in the "Standards" section.

Table 1 contains cabling specifications for Cisco X2 modules.

Table 1. X2 port cabling specifications

Cisco X2

wavelength (nm)

kind of rope

Core size (microns)

Modal Bandwidth (MHz*kilometer)

remove cable*

Cisco X2-10GB-CX4


CX4 (copper)




Cisco X2-10GB-T


CAT6A/CAT7 (koper)



100 meter

Cisco X2-10GB-SR









160 (FDDI gray)

200 (OM1)


500 (OM2)

2000 (OM3)

4700 (OM4)





300 meter


Cisco X2-10GB-LRM










100 meter





300 meter

Cisco X2-10GB-LX4









300 meter


300 meter

Cisco X2-10GB-LR





10 km

Cisco X2-10GB-ER**





40 km***

*The minimum wiring distance for -LR, -SR, -LX4, -ER modules is 2m according to the IEEE 802.3ae standard and the minimum wiring distance for -LRM modules is 0.5m according to the IEEE 802.3aq- standard.

**Requires 5dB 1550nm fixed loss attenuator for <20km. The damper is available as a spare part. The part number is WS-X6K-5DB-ATT=.

***Connections longer than 30 km are considered planned connections.


IEEE 802.3ae (-LR, -SR, -LX4, -ER)

IEEE 802.3ak (-CX4)

IEEE 802.3aq (-LRM)

IEEE 802.3an (-T)

Table 2 shows the main optical characteristics of the Cisco X2 module. Cisco X2-10GB-CX4 and X2-10GB-T are not optical modules and are therefore not listed in Table 2.

Mesa 2. Send and receive optical specifications



Zendvermogen (dBm)*

Receiving power (dBm)*

Transmit and receive wavelength range (nm)







Cisco X2-10GB-SR

10GBASE-SR 850nm MMF





840 on 860

Cisco X2-10GB-LRM

10GBASE-LRM 1310 nm MMF en SMF




-8.4 (average)

and -6.5 (in OMA)***

1260 to 1355

Cisco X2-10GB-LX4


-0.5 pro Spores

-6.75 per title in OMA

-0.5 pro Spores

-14,25 pro Spur in OMA

four lanes; general range: 1269 to 1356

Cisco X2-10GB-LR

10GBASE-LR 1310nm SMF





1260 to 1355

1260 to 1565****

Cisco X2-10GB-ER

10GBASE-ER 1550nm SMF





1530 in 1565

1260 to 1565****

*Transmitter and receiver performance is average unless otherwise stated.

**The starting power must be less than the class 1 safety limit or the maximum receiving power. The requirements for Class 1 lasers are defined in IEC 60825-1:2001.

(Video) Cisco Tech Talk: CBS250 and CBS350 Supported SFP Modules

***The averaging and OMA specifications must be met simultaneously.

****While the receiver is tolerant of a wide range of wavelengths, the specifications are guaranteed for a signal within the transmit wavelength range.

Table 3 describes the optical specifications for the Cisco X2-10GB-ZR modules.

Tisch 3. Optical parameters of the X2-10GB-ZR







Notices and Terms


transmitter wavelength




Side Mode Suppression Percentage




Transmitter Extinction Rate



Optical output power of the transmitter

PFor a



Average power coupled with single-mode fiber


Optical input wavelength of the receiver




The receiver can tolerate a wavelength range of 1260 to 1565, but the specifications are guaranteed for a received signal with the transmit wavelength range.

The receiver's damage limit



spreading tolerance



optical input power





At Bit Error Rate (BER) = 10e-12with the IEEE 802.3 test standard

Dispersion performance loss at 1600 ps/nm



At Bit Error Rate (BER) = 10e-12with the IEEE 802.3 test standard

Monitoring: Unless otherwise stated, parameters refer to temperature and end of life. If shorter distances of single-mode fiber are used, an in-line optical attenuator should be used to prevent overload and damage to the receiver.


Dimensions (D x W x H): 91mm x 36mm x 13.46mm. Cisco X2s typically weigh less than 300 grams

Environmental conditions and power requirements

Operating temperature range is 0 to 70°C (32 to 158°F); The storage temperature range is -40 to 85 °C (-40 to 185 °F).

The maximum power consumption per Cisco X2 module is 4 W


Standard warranty: 5 years

Accelerated exchange available through a Cisco SMARTnet®Service Support Agreement

Table 4 contains ordering information for Cisco X2 modules and associated cables.

Table 4. Order the Cisco X2 and associated cables


Product number

Module X2

Cisco 10GBASE-LR X2-module voor SMF


Cisco 10GBASE-CX4 X2 Module for CX4 Cables (Copper)


Cisco 10GBASE-SR X2-module voor MMF


Cisco 10GBASE-LRM X2-module voor MMF


Cisco 10GBASE-LX4 X2-module voor MMF


Cisco 10GBASE-ER X2 Module for SMF


Cisco 10GBASE-ZR X2-module voor SMF


Cisco 10GBASE-T X2 module for CAT6A/CAT7 copper cabling



62.5u mode conditioning patch cable, double SC connectors


50u mode conditioning patch cable, two SC connectors


1m cable in front of 10GBase-CX4 module


5m cable in front of 10GBase-CX4 module


10 m cable in front of 10GBase-CX4 module


15 m cable in front of 10GBase-CX4 module


(Video) Cisco Transceivers: QSFP-DD Support of Pluggable Coherent Modules

Compliance with rules and regulations


GR-20-CORE: General requirements for fiber optics and fiber optic cable

GR-326-CORE: General requirements for singlemode optical connectors and jumper assemblies

GR-1435-CORE: General requirements for multifiber optical connectors


Lasers Class 1 21CFR-1040 LN#50 7/2001

Laser class 1 IEC60825-1

Cisco environmental sustainability

For information on Cisco's environmental sustainability policies and initiatives for our products, solutions, operations, and extended operations or supply chains, see the Cisco Environmental Sustainability section.Corporate Social Responsibility(RSC) report.

See the table below for reference links to information on key environmental sustainability issues (listed in the Environmental Sustainability section of the CSR report):

theme sustainability


Information on laws and regulations related to the content of product materials


Information on e-waste laws and regulations, including products, batteries, and packaging


Cisco provides packaging information for informational purposes only. They may not reflect the latest legal developments and Cisco makes no representation, warranty, or guarantee that they are complete, accurate, or current. This information is subject to change without notice.

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More information

(Video) Master SFP Connections in Minutes: SFP connections explained. What are SFP+, SFP28, SFP56

For more information on Cisco 10GBASE-X2 modules, contact your sales representative or visit:


What is Cisco X2 module? ›

The Cisco 10GBASE X2 modules offers customers a wide variety of 10 Gigabit Ethernet connectivity options for data center, enterprise wiring closet, and service provider transport applications.

What is the range of 10gb SR? ›

10GBASE-SR Multimode SFP+

SR stands for short-range, the transmission distance of 10GBASE-SR modules can reach up to 300 meters matched with OM3 multimode fiber (MMF). Implemented with a VCSEL, 10GBASE-SR transceivers also known as the lowest-cost, lowest-power modules.

What is the warranty on SFP 10G TX? ›

All products are covered with a lifetime replacement warranty and our 60 day NO QUIBBLE RETURN policy. Switch SFP Part SFP-10G-T-X-C is in UK stock and 100% Compatible with Cisco part SFP-10G-T-X extended temperature rated.

How far can a 10GBASE-SR SFP module be? ›

The Cisco 10GBASE-SR module supports a link length of 26 meters on standard Fiber Distributed Data Interface (FDDI)-grade multimode fiber (MMF).

How to choose Cisco SFP module? ›

SFP modules are distinguished by their bandwidth capabilities, wavelength, and distance capability. The SFP you choose must be compatible with the fiber cable you are installing. Single mode fiber requires a single mode compatible SFP. Multimode fiber requires a multimode compatible SFP.

How many modules does Cisco have? ›

The CCNA Routing and Switching programme can be completed as four separate modules.

What is the maximum distance for SFP? ›

Single mode SFP transceivers can transmit anywhere from 2km all the way to 80km in distance. Standard Single mode SFPs can transmit up to 10km, while Extended Single mode SFPs, up to 80km. For shorter distances, and a cheaper option, multi mode SFPs are a great solution.

What is the transmit and receive bandwidth of a 10GB SFP+ module? ›

This 850 nm VCSEL 10Gigabit SFP+ transceiver is designed to transmit and receive optical data over 50/125 μm or 62.5/125 μm multimode optical fiber (Table 1).

What is the longest 10GBASE? ›

10GBase-CX1, also referred to as a direct attach cable (DAC), is the SFP+ copper standard. The standard has a maximum distance of 10 meters, though Cisco currently only offers lengths up to 5m. This is actually a cable with SFP+ ends, not a module with a separate cable.

Do SFP modules go bad? ›

The Main Causes of SFP Module Failures

The end face of the fiber connector and optical slots is exposed to the environment and contaminated by dust. Using the scratched or poor-quality fiber connector will cause the SFPs failures.

How do I know if my cable is SFP or failure? ›

How to determine SFP or cable faulty, review the porterrshow output from the switch.
  1. enc out errors alone imply primarily a cable issue.
  2. enc out and crc err in combination primarily imply a GBIC/SFP problem.
  3. disc c3 combined with c3 timeout tx suggest SFP faulty.
Jun 14, 2022

How do I know if a SFP module is working? ›

The simplest way to test an SFP transceiver is with the FiberLert™ live fiber detector, which lights up and beeps when placed in front of an active fiber or port.

Can you use two different SFP modules? ›

If the wavelength, the speed, and the fiber type of the modules are the same, plus operating normally on the original switches separately, then adopting two modules from different brands will work. Can I use 1G SFP and 10G SFP+ modules together? The answer is yes.

Which SFP module do I need? ›

If you have a multimode fiber cabling structure, then choose the multimode SFP. If you have a single mode fiber cabling, a single mode transceiver is the only choice.

Can you mix LR and SR SFP? ›

It will not work. Need to use the same optics and the same type of cable on both sides.

What is the difference between SFP module and SFP transceiver? ›

SFP and SFP+ transceivers are virtually identical in size and appearance. The primary difference is that SFP+ is an updated version that supports higher speeds up to 10Gbps. The difference in data rate also accounts for a difference in transmission distance—SFP typically has a longer transmission distance.

What is the most common SFP module? ›

According to the transmission speed, the most common SFP module on the market today is the 1Gb, including 1000base-T/TX, 1000base-SX, 1000base-LX/LX10, 1000base-BX10, 1000base-LX/LH, 1000base-EX, and 1000base-ZX.

How do I know if my SFP is single mode or multimode? ›

A: Apart from the Bale Clasp color coding, single-mode and multimode fiber cables can also be identified by the color of the patch cord. In single-mode optical fiber cable, the patch cord is in yellow color; and in multimode fiber cable, the patch cord comes in orange color.

What is the hardest Cisco test? ›

Cisco Certified Internetwork Expert (CCIE)

The CCIE is the highest level of certification offered by Cisco and is one of the most respected and sought-after IT certifications today. It's also one of the most difficult to earn.

How many times can you fail a Cisco exam? ›

Candidates cannot retake the same written exam more than four times per rolling calendar year regardless of passing or failing the exam.

What are Cisco modules? ›

Cisco EAP-FAST Module is an Authentication via Secure Tunneling (EAP-FAST), an EAP type from Cisco Systems. Extensible Authentication Protocol-Flexible Authentication via Secure Tunneling (EAP-FAST) is a publicly accessible IEEE 802.1X EAP type developed by Cisco Systems.

What temperature does Cisco SFP run at? ›

For example, the temperature range of optical transceiver is larger than copper module, and the temperature range of SFP module is smaller than SFP+ module such as 1000BASE-SX SFP is from 0 to 70°C while 10Gbase-SR is from -40°C to 85°C.

Do I need SFP on both sides? ›

That is perfectly fine and normal. You do not need a transceiver on both ends - just whichever side you intend to use an SFP/SFP+/QSFP port on.

What is the range of 10G SFP module? ›

SFP-10G-ER(Extened Range) supports transmission distance of up to 40 kilometers on standard Single-Mode Fiber. It is widely applied in data center and enterprise industrial park . SFP-10G-ZR(Ze Best Range) supports transmission distance of up to 80 kilometers with 1550nm waverlength on standard Single-Mode Fiber.

What does a Cisco network module do? ›

A network module is a software module that implements a specific function in a network stack, such as a data link interface, a transport protocol, or a network application. A network module can be a provider module, a client module, or both, depending on where it is located in the network stack.

What is the use of Cisco SFP module? ›

The SFP devices allow the switch to connect to fiber cables of different types — including single-mode and multimode–and speeds (1 Gbps, 10 Gbps), or even Ethernet copper cables, such as CAT5e and CAT6.

What does a Cisco supervisor module do? ›

Performs routing for the chassis. The MSFC contains the route processor (RP) and Switch processor (SP) for the router. Runs Layer 2 and Layer 3 protocols, such as the Spanning Tree Protocol (STP) and others.


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