Cisco TwinGig CVR-X2-SFP Quick start guide

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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. Table 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.
1Latch arms
2SFP slots
3Top 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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TwinGig Overview
Table 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 nm1
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 cable2
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
Type
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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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 MMF1
SMF
62.5
50
50
G.6522
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.6522— 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.6522— 62 miles (100 km)
Dense Wave Division
Multiplexing (DWDM)
100GHz ITU
channels 20
to 59
SMF G.6522— 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
Type
Core Size
(micron)
Modal
Bandwidth
(MHz/km) Cable Distance

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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. Table 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.
1Latch arms
2SFP+ slot
3Top 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

OneX Overview
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Table 4 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.
SFP-H10GB-CU3M Twinax cable assembly, 3m, 30 AWG
SFP-H10GB-CU5M Twinax cable assembly, 5m, 24 AWG
Table 3 Supported SFP+ Modules and Patch Cords (continued)
SFP+ Module Number Description
Table 4 Fiber-Optic Port Cabling Specifications
SFP Module
Wavelength
(nanometers)
Fiber
Type
Core Size
(micron)
Modal
Bandwidth
(MHz/km) Cable Distance
10GBASE-SR 850 MMF 62.5
62.5
50
50
50
160
200
400
500
2000
85 feet (26 m)
108 feet (33 m)
216 feet (66 m)
269 feet (82 m)
984 feet (300 m)

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Converter Module Installation
Converter Module Installation
This section describes how to install and remove a converter module in a switch
and how to install and remove the SFP or SFP+ modules. It contains these
sections:
•Safety Warnings, page 7
•Installation Guidelines, page 8
•Installing and Removing the Converter Module, page 9
•Installing and Removing SFP or SFP+ Modules, page 12
Safety Warnings
This section includes the basic installation caution and warning statements.
Translations of the warning statements appear in the Regulatory Compliance and
Safety Information for the Catalyst 3750-E and Catalyst 3560-E (available online
at
http://www.cisco.com/en/US/docs/switches/lan/catalyst3750e_3560e/hardware/r
egulatory/compliance/1848201.html) document that ships with the switch. Read
this section before you start the installation procedure.
Caution Proper ESD protection is required whenever you handle Cisco equipment.
Installation and maintenance personnel should be properly grounded by means of
grounding straps to eliminate the risk of ESD damage to the equipment.
Equipment is subject to ESD damage whenever it is removed from the switch.
Warning This warning symbol means danger. You are in a situation that could cause
bodily injury. Before you work on any equipment, be aware of the hazards
involved with electrical circuitry and be familiar with standard practices for
preventing accidents. Use the statement number provided at the end of each
warning to locate its translation in the translated safety warnings that
accompanied this device. Statement 1071

Converter Module Installation
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Warning Only trained and qualified personnel should be allowed to install, replace, or
service this equipment. Statement 148
Warning Do not reach into a vacant slot or chassis while you install or remove a module.
Exposed circuitry could constitute an energy hazard. Statement 206
Warning Ultimate disposal of this product should be handled according to all national
laws and regulations. Statement 1040
Warning Class 1 laser product. Statement 1008
Installation Guidelines
Follow these guidelines when working with the converter module or an SFP or
SFP+ module:
•The converter module and SFP or SFP+ modules are static sensitive. To prevent
ESD damage, wear an ESD-preventive wrist strap that is connected to the chassis.
Place the module in an antistatic bag when not in use.
•Verify the correct orientation of the modules before inserting them into the
slot. Incorrect insertion can damage the module or the switch.
•Do not install or remove a converter module with the SFP or SFP+ modules
installed. Always remove any optical cables and SFP or SFP+ modules from
a converter module before installing it in the switch.
•Do not install or remove an SFP or SFP+ module with the cables attached
because of the potential damage to the cables, the cable connector, or the
optical interfaces in the module. Disconnect all cables before removing or
installing an SFP or SFP+ module.
•Verify that the converter module is straight and not at an angle when you
install it in the slot. Installing the module at an angle can damage it. Any
module that is only partially connected to the switch might not operate
correctly.

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Converter Module Installation
•Do not force the converter module into its slot. This can damage the pins if
they are not aligned with the module.
•Do not remove the EMI plug from the converter module, the dust plug from
the SFP or SFP+ module, or the rubber caps from the fiber-optic cable until
you are ready to connect the cable. The plugs and caps protect the module
ports and cables from contamination and ambient light.
•Removing and installing a module can shorten its useful life. Do not remove
and insert a module more often than is absolutely necessary.
Note Switches support hot swapping of the converter module. You can remove and
replace the module without disconnecting the system power. Hot swapping the
module does not interrupt normal switch operation.
Installing and Removing the Converter Module
These sections describe how to install and remove a Converter Module in a switch
with 10-Gigabit Ethernet module slots.
Note When you install or remove the TwinGig converter module, the mode on the
switch changes from 10 Gigabit Ethernet to Gigabit Ethernet or the reverse.
During this mode change, data traffic on the other switch uplink ports (X2
transceiver or SFP module ports) might temporarily stop. When you install or
remove an X2 transceiver or SFP module, traffic delay does not occur.
Installing a Converter Module
To install a converter module in the switch module slot, follow these steps:
Step 1 Attach an ESD-preventive wrist strap to your wrist and to a bare metal surface.
Step 2 Remove the 10-Gigabit Ethernet module slot EMC plugs and save.

Converter Module Installation
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Caution Do not remove the EMC plug from the 10-Gigabit Ethernet X2 slot until you are
ready to install the converter module. A module or an EMC plug must be installed
in the slot at all times.
Step 3 Remove the converter module from its protective packaging.
Caution Do not install the converter module with the SFP or SFP+ modules installed.
Always remove any cables and SFP or SFP+ modules before installing the
converter module in the switch.
Caution Verify the correct orientation of the converter module before inserting it into the
slot. Incorrect insertion can damage the module.
Step 4 Slide the converter module gently but firmly into the 10-Gigabit switch module
slot until the converter module is flush with the switch faceplate and the converter
module snaps into place.
When using the Catalyst 3750-E switch upper 10-Gigabit Ethernet module slot
(slot1), insert the converter module face up. When using the switch lower module
slot (slot 2), insert the converter module face down (Figure 3). The orientation
will vary for other switches, refer to your switch’s documentation.
Step 5 Install the SFP or SFP+ module into the converter module (See the“Installing an
SFP or SFP+ Module” section on page 13). The switch detects the presence of
both the converter module and any inserted Cisco SFP or SFP+ modules.

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Converter Module Installation
Figure 3 Installing a TwinGig Converter Module (Catalyst 3750-E
Specific)
Removing a Converter Module
To remove a converter module from the switch module slot, follow these steps:
Step 1 Attach an ESD-preventive wrist strap to your wrist and to a bare metal surface on
the chassis.
Step 2 Disconnect the cables from the SFP or SFP + module and remove the SFP or SFP+
modules from the converter module. (See the “Installing and Removing SFP or
SFP+ Modules” section on page 12).
Step 3 Pinch the latch arms on each side of the converter module, and carefully slide it
out of the slot (Figure 4).
Step 4 Place all SFP or SFP+ modules and converter modules in an antistatic bag or other
protective environment.
Step 5 Replace the EMI plug in the switch empty 10-Gigabit Ethernet module slot.
1Module inserted face up
2Module inserted face down
49
51
X2-1
X2-2
50
52
45 46 47 48
47X
48X
t 3750-E
SERIES
PoE-48
200222
1
2

Converter Module Installation
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Figure 4 Removing a Converter Module from the Switch (TwinGig
Shown)
Installing and Removing SFP or SFP+ Modules
This section describes how to install and remove SFP or SFP+ modules in the
converter module slots. You must have the converter module installed in a
10-Gigabit Ethernet switch slot to use SFP or SFP+ modules with the switch.
Figure 5 on page 14 shows the converter module in the switch with the SFP
modules installed.
For detailed information about installing, removing, cabling, and troubleshooting
SFP and SFP + modules, see the module documentation that shipped with your
device.
Caution To avoid damage to the converter module, first install the converter module in the
switch 10-Gigabit Ethernet X2 slot before installing the SFP or SFP+ modules.
Note Do not install or remove an SFP or SFP+ module with cables attached to it because
of the potential damage to the cables, the cable connector, or the optical interfaces in
the SFP module. Disconnect all cables before removing or installing an SFP or SFP+
module.
49
51
X2-1
X2-2
50
52
45 46 47 48
47X
48X
t 3750-E
SERIES
PoE-48
157534

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Converter Module Installation
Installing an SFP or SFP+ Module
Caution Verify the correct orientation of the SFP or SFP+ module before inserting it into
the converter module. Incorrect insertion can damage the converter module, the
SFP or SFP+ module, or the switch.
To insert an SFP or SFP+ module into a converter module slot, follow these steps:
Step 1 Attach an ESD-preventive wrist strap to your wrist and to a bare metal surface.
Step 2 Find the send (TX) and receive (RX) markings that identify the top side of the SFP
or SFP+ module.
On some SFP or SFP+ modules, the send and receive (TX and RX) markings
might be replaced by arrows that show the direction of the connection, either send
(arrow pointing out) or receive (arrow pointing).
•When installing an SFP module in the Catalyst 3750-E switch upper
10-Gigabit Ethernet module slot (slot 1), insert the SFP module face up.
When installing an SFP module in the switch lower module slot (slot 2), insert
the SFP module face down.
•If you are using an SFP module patch cable, and the converter module is
installed in the switch upper 10-Gigabit Ethernet module slot (slot 1), insert
the SFP patch cable into the converter module with the label facing up. If the
converter module is installed in the switch lower module slot (slot 2), insert
the patch cable into the converter module with the label facing down
(Figure 6).
Step 3 If the SFP or SFP+ module has a bale-clasp latch, move it to the open, unlocked
position.
Step 4 Slide the SFP or SFP+ module or the patch cable into the opening until you feel
the connector on the module snap into place.
Step 5 If the module has a bale-clasp latch, close it to lock the SFP or SFP+ module in
place.
Step 6 Remove the dust plugs from the SFP or SFP+ module and save. Attach the cables
to the SFP or SFP+ module.

Converter Module Installation
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Figure 5 Converter Module with SFP Modules Installed (TwinGig
Shown)
1Converter module 3Send (TX) optical bore
2SFP modules1
1. Lower SFP modules are inverted.
4Receive (RX) optical bore
159812
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X2-1
X2-2
50
52
45 46 47 48
47X
48X
t 3750-E SERIES
PoE-48
3 4
4 3
2
1

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Converter Module Installation
Figure 6 SFP Patch Cable Installation (TwinGig Shown)
Removing an SFP or SFP+ Module
To remove an SFP or SFP+ module from the converter module, follow these steps:
Step 1 Attach an ESD-preventive wrist strap to your wrist and to a bare metal surface.
Step 2 Disconnect the cable from the SFP or SFP+ module. For reattachment, note which
cable connector plug is send (TX) and which is receive (RX).
Step 3 Insert a dust plug into the optical ports of the SFP or SFP+ module to keep the
optical interfaces clean.
Step 4 If the SFP or SFP+ module has a bale-clasp latch, pull the bale out and down to
eject the module. If the bale-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 bale-clasp latch.
Step 5 Grasp the SFP or SFP+ module, and carefully remove it from the converter
module.
1Patch cable inserted face up
2Patch cable inserted face down
159813
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X2-1
X2-2
50
52
45 46 47 48
47X
48X
t 3750-E
SERIES
PoE-48
1
2

Obtaining Documentation and Submitting a Service Request
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Installation Notes for the Cisco TwinGig and OneX Converter Modules
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Step 6 Place the removed SFP or SFP+ module in an antistatic bag or other protective
environment.
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
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