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Installation Notes for the Cisco
TwinGig and OneX Converter Modules
PID: CVR-X2-SFP and CVR-X2-SFP10G
This note provides the installation instructions for the Cisco TwinGig and OneX
Converter Modules. This document contains these sections:
• TwinGig Overview, page 1
• OneX Overview, page 4
• Converter Module Installation, page 7
• Obtaining Documentation and Submitting a Service Request, page 16
TwinGig Overview
The Cisco TwinGig Converter Module (model CVR-X2-SFP), also known as a
converter module, is a hot-swappable input/output (I/O) device that slides into a
10-Gigabit Ethernet X2 slot on a switch. It converts the 10-Gigabit X2 interface
into a dual SFP interface. It was developed for the Catalyst 3560-E switch but is
supported on other platforms. The converter module is shown in Figure 1.
TwinGig Overview
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Installation Notes for the Cisco TwinGig and OneX Converter Modules
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Figure 1 Cisco TwinGig Converter Module
The converter module supports up to two small-form factor pluggable (SFP)
modules. These modules plug into the converter module slots to establish
fiber-optic and copper connections to network devices. Tabl e 1 lists the SFP
modules that the converter module supports.
Note Use only Cisco SFP modules in the converter module. Each Cisco module has an
internal serial EEPROM that is encoded with security information. This encoding
provides a way for Cisco to identify and validate that the module meets the
requirements for the switch.
1 Latch arms
2 SFP slots
3 Top of the converter module
158259
3
2
1
Table 1 Supported SFP Modules
SFP Module Number Description
GLC-GE-100FX 100BASE-FX
GLC-LH-SM 1000BASE-LX
GLC-SX-MM 1000BASE-SX
GLC-T 1000BASE-T
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Installation Notes for the Cisco TwinGig and OneX Converter Modules
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TwinGig Overview
Tabl e 2 lists the fiber-optic cabling specifications for the SFP modules that you
install in the converter module. Each port must match the wavelength
specifications on the other end of the cable, and the cable must not exceed the
stipulated cable length. The SFP modules using fiber-optic connections need
fiber-optic cables with LC/PC or LC/UPC connectors. The SFP modules using
copper connections need Category 5E cables with RJ-45 connectors. Copper 1000
BASE-T SFP modules use standard four twisted pair category 5E cable at lengths
up to 328 feet (100 meters).
GLC-ZX-SM 1000BASE-ZX
GLC-BX-D 1000BASE-BX, 1490 nm
1
GLC-BX-U 1000BASE-BX, 1310 nm
CWDM-SFP-xxxx CWDM SFP
DWDM-SFP-xx.xx DWDM SFP
CAB-SFP-50CM (3560-E only) SFP module patch cable
2
1. nm = nanometer
2. The Catalyst 3560-E switch supports the SFP module patch cable, a 0-5-meter, copper, passive
cable with SFP module connectors at each end. The patch cable can connect two Catalyst 3560-E
switches in a cascaded configuration.
Table 1 Supported SFP Modules (continued)
SFP Module Number Description
Table 2 Fiber-Optic Port Cabling Specifications
SFP Module
Wavelength
(nanometers)
Fiber
Ty pe
Core Size
(micron)
Modal
Bandwidth
(MHz/km) Cable Distance
100BASE-FX 1310 MMF 62.5
50
500
500
6562 feet (2 km)
6562 feet (2 km)
1000BASE-SX 850 MMF 62.5
62.5
50
50
160
200
400
500
722 feet (220 m)
902 feet (275 m)
1640 feet (500 m)
1804 feet (550 m)
OneX Overview
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Installation Notes for the Cisco TwinGig and OneX Converter Modules
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OneX Overview
The Cisco OneX Converter Module (model CVR-X2-SFP10G),also known as a
converter module, is a hot-swappable input/output (I/O) device that slides into a
10-Gigabit Ethernet X2 slot on a switch. It converts the 10-Gigabit X2 interface
into a single 10-Gigabit SFP+ interface. It is supported on many platforms using
X2 interfaces. This converter module is shown in Figure 2.
1000BASE-LX/LH 1300 MMF
1
SMF
62.5
50
50
G.652
2
500
400
500
—
1804 feet (550 m)
1804 feet (550 m)
1804 feet (550 m)
32,810 feet (10 km
1000BASE-ZX 1550 SMF G.652
2
— 43.4 to 62 miles (70
to 100 km)
3
1000BASE-BX 1490/1310 SMF G.6522 — 32,810 feet (10 km)
Coarse Wave Division
Multiplexing (CWDM)
1470, 1490,
1510, 1530,
1550, 1570,
1590, 1610
SMF G.652
2
— 62 miles (100 km)
Dense Wave Division
Multiplexing (DWDM)
100GHz ITU
channels 20
to 59
SMF G.652
2
— 62 miles (100 km)
1. A mode-conditioning patch cord is required.
2. ITU-T G.652 SMF as specified by the IEEE 802.3z standard.
3. 1000BASE-ZX modules can send data up to 62 miles (100 km) by using dispersion-shifted SMF or low-attenuation SMF; the
distance depends on the fiber quality, the number of splices, and the connectors.
Table 2 Fiber-Optic Port Cabling Specifications
SFP Module
Wavelength
(nanometers)
Fiber
Ty pe
Core Size
(micron)
Modal
Bandwidth
(MHz/km) Cable Distance
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Installation Notes for the Cisco TwinGig and OneX Converter Modules
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OneX Overview
Figure 2 Cisco OneX Converter Module
The converter module supports one small-form factor pluggable plus (SFP+)
module. The module plugs into the converter module slot to establish fiber-optic
and copper connections to network devices. Tabl e 3 lists the SFP+ modules that
the converter module supports.
Note Use only Cisco SFP+ modules in the converter module. Each Cisco module has
an internal serial EEPROM that is encoded with security information. This
encoding provides a way for Cisco to identify and validate that the module meets
the requirements for the switch.
1 Latch arms
2 SFP+ slot
3 Top of the converter module
274039
3
1
2
Table 3 Supported SFP+ Modules and Patch Cords
SFP+ Module Number Description
SFP-10G-SR Cisco 10GBASE-SR SFP-Plus transceiver module for
MMF, 850-nm wavelength
SFP-H10GB-CU1M Twinax cable assembly, 1m, 30 AWG
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