Installation Instructions

Selecting a QSFP28
Use a QSFP28 transceiver to interface a port to a fiber optic cable.
Depending on the product, you can obtain transceivers for cable distances of up to 10 km (for LR4
transceivers). QSFP28 to QSFP28 100 Gigabit passive copper direct attach cables (DAC) have a
reach of up to 5 meters. QSFP28 to QSFP28 100 Gigabit active optical cables have a reach of 10
meters.
About this task
Select the appropriate transceiver to provide the required reach.
Procedure
1. Determine the required reach.
2. Determine wavelength restrictions or requirements.
3. Use the following job aid to determine the appropriate transceiver or cable for your
application.
Job aid
QSFP28 transceivers are designed to support 100 Gigabit Ethernet. Different transceiver types are
available for use over different optical fiber types and for different optical reaches.
Important:
Avaya recommends using Avaya-branded transceivers as they have been through extensive
qualification and testing. Avaya will not be responsible for issues related to non-Avaya branded
transceivers.
To determine the appropriate QSFP28 transceiver or cable for your application, see Supported
transceivers on page 15.
Installing a QSFP28 transceiver
Install a QSFP28 transceiver to provide a 100 Gigabit Ethernet interface between the device and
other network devices.
Before you begin
• Verify that the QSFP28 is the correct model for your network configuration.
• Before you install the fiber, ensure that the connector is clean.
Danger:
Risk of eye injury by laser
QSFP28
May 2017 Installing Transceivers and Optical Components on VOSS 72
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