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Cisco CPAK 100GBASE Modules Data Sheet

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Product Overview

The Cisco CPAK 100GBASE modules offer customers a wide variety of high-density 100Gbps connectivity solutions for data center networking, high-performance computing networks, enterprise core aggregation, and service provider transport applications. Some CPAK modules, such as the Cisco CPAK 100GBASE-LR4, use Cisco® complementary metal-oxide semiconductor (CMOS) photonic technology to provide industry-leading optical integration, performance, low power consumption, and scalability.

Features and Benefits

Key features of Cisco CPAK 100GBASE modules include:

Support for 100 Gigabit Ethernet

Hot-swappable input/output device that plugs into a Cisco CPAK-module-based switch, router, or optical platform port

Flexibility of interface choice

Support for a “pay-as-you-grow” model

Support for digital optical monitoring (DOM)

Interoperability with any IEEE-compliant 100GBASE-LR4 or 100GBASE-SR10 form factors

Support for the Cisco quality identification (ID) feature, which enables a Cisco platform to identify whether the module is certified and tested by Cisco

Size that is 70 percent smaller than C Form-Factor Pluggable (CFP) modules, providing higher-density 100-gigabit interfaces

Green design, with up to 70 percent less power consumption than CFP modules

Easy-to-use pull-release handle that is color coded for reach identification

Cisco CPAK 100GBASE-LR4 Module

The Cisco CPAK 100GBASE-LR4 module (Figure 1) is IEEE 802.3ba compliant and supports link lengths of up to 10 km over standard single-mode fiber (SMF, G.652). It delivers an aggregate data signal of 100 gigabits per second, carried over four LAN wavelength-division multiplexing (WDM) wavelengths operating at a nominal 25 Gbps per lane. Optical multiplexing and demultiplexing of the four wavelengths are managed within the module. Its primary application is to support high-bandwidth 100Gbps optical links over standard single-mode fiber terminated with SC connectors. Nominal power consumption is less than 5.5W.

Figure 1. Cisco CPAK 100GBASE-LR4 Module

Cisco CPAK 100GBASE-SR10 Module

The Cisco CPAK 100GBASE-SR10 module (Figure 2) supports link lengths of 100m and 150m on laser-optimized OM3 and OM4 multifiber cables, respectively. The module delivers high-bandwidth 100-gigabit links over 24-fiber ribbon cables terminated with MPO/MTP connectors. It can also be used in 10 x 10-Gb mode along with ribbon-to-duplex-fiber breakout cables for connectivity to ten 10GBASE-SR optical interfaces.

Figure 2. Cisco CPAK 100GBASE-SR10 Module

Technical Specifications

Platform Support

Cisco CPAK modules are supported on Cisco switches and routers. For more details, refer to Cisco 100 Gigabit Ethernet Transceiver Modules Compatibility Matrix.

Connectors and Cabling

Dual SC/PC connector (CPAK 100GBASE-LR4 module)

24-fiber MPO/MTP connector (CPAK 100GBASE-SR10 module receives a female MPO/MTP-24 connector)

Note: Only connections with patch cords with PC or UPC connectors are supported. Patch cords with APC connectors are not supported. All cables and cable assemblies used must be compliant with the standards specified in the Regulatory and Standards Compliance section, later in this document.

Table 1 provides cabling specifications for the Cisco CPAK modules.

Table 1. CPAK Port Cabling Specifications

Cisco CPAK Module

Wavelength (nm)

Cable Type

Core Size (Microns)

Modal Bandwidth (MHz*km)***

Cable Distance*




9-micron core

SMF per G.652


10 km






2000 (OM3)

4700 (OM4)



* Minimum cabling distance for -LR4 modules is 2m, according to the IEEE 802.3ba.
** Considered an engineered link with maximum 1dB allocated to connectors and splice loss.
*** Specified at transmission wavelength.

Table 2 shows the primary optical characteristics for the Cisco CPAK 100GBASE modules.

Table 2. Optical Transmit and Receive Specifications



Transmit Power (dBm)*

Receive Power (dBm)*

Transmit and Receive Center Wavelength Range (nm)







1310 nm SMF

4.5 per lane

-4.3 per lane

4.5 per lane

-10.6 per lane

Four lanes:

1294.53 to 1296.59

1299.02 to 1301.09

1303.54 to 1305.63

1308.09 to 1310.19



850 nm MMF

-1.0 per lane

-7.6 per lane

2.4 per lane

-9.5 per lane

Ten lanes: 850 to 860 nm

* Transmitter and receiver power are in averages, unless specified.


Maximum outer dimensions for the CPAK modules are (H x W x D): 11.6 x 34.8 x 101.2 mm (0.46 x 1.37 x 3.98 in).

The Cisco CPAK modules typically weigh approximately 127 grams (4.48 oz.).

Environmental Conditions and Power Requirements

Storage temperature range: -40 to 85° C (-40 to 185° F)

CPAK 100GBASE-LR4 operating temperature range: 0 to 70° C (32 to 158° F)

CPAK 100GBASE-SR10 operating temperature range: 0 to 70° C (32 to 158° F)

CPAK 100GBASE-LR4 power consumption at 70° C: <6.75W maximum

CPAK 100GBASE-SR10 power consumption at 70° C: <4.5W maximum


Standard warranty: 90 days

Extended warranty (optional): Cisco CPAK modules can be covered in a Cisco SMARTnet® Service support contract for the Cisco switch or router chassis

Ordering Information

Table 3 provides ordering information for Cisco CPAK modules and related cables.

Table 3. Ordering Information


Product Number

100GBASE-LR4 CPAK Module for SMF


100GBASE-SR10 CPAK Module for MMF


Regulatory and Standards Compliance


GR-20-CORE: Generic Requirements for Optical Fiber and Optical Fiber Cable

GR-326-CORE: Generic Requirements for Single-Mode Optical Connectors and Jumper Assemblies

GR-1435-CORE: Generic Requirements for Multifiber Optical Connectors

IEEE 802.3ba (LR4, SR10)

Reduction of Hazardous Substances (RoHS) 6 compliant


Laser Class 1 21CFR-1040 LN50 7/2001

Laser Class 1 IEC60825-1

Additional Information

For more information about Cisco CPAK 100GBASE optics and copper modules, contact your sales representative or visit: