Installation Instructions

Note:
Auto-negotiation is always disabled for 1 Gigabit Ethernet transceivers on VSP 7254XSQ, so for
proper operation with a 1000BASE-T SFP, the remote 1000BASE-T interface must have auto-
negotiation enabled. If not, the link will not be established. Also note that because the SFP+
ports on the VSP 7254XSQ only support 1 and 10 Gbps speeds, the AA1419043-E6
1000BASE-T SFP will only operate at 1G speeds.
Selecting an SFP
Use an SFP transceiver to connect a device motherboard to a fiber optic or unshielded twisted pair
network cable. Select the appropriate transceiver to provide the required reach.
Procedure
1. Determine the required reach.
Depending on the product, SFP transceivers are available for cable distances of up to 100
meters (m), 550 m, 10 kilometers (km), 40 km, 70 km, and 120 km.
2. Determine the required media and connector type.
You need fiber optic cable for a reach over 100 m.
Possible media include CAT5, single mode fiber, and multimode fiber. Possible connectors
include LC, MT-RJ, and RJ-45.
3. If the media is optical fiber, determine wavelength restrictions or requirements.
To expand available bandwidth on a common optical fiber, use Coarse Wavelength Division
Multiplexing (CWDM) SFP transceivers.
4. Determine if you need digital diagnostic monitoring (DDM). DDM is enabled by default.
Not all SFP transceivers or products support DDM.
Job aid
SFP transceivers are hot-swappable input and output interface devices designed for use with Avaya
products to allow gigabit Ethernet ports to link with other gigabit Ethernet ports over various media
types. SFP transceivers are devices that are used to connect pairs of ports together over different
media types, different distances, and at different price points.
The system also supports CWDM SFP transceivers. CWDM technology consolidates multiple
optical channels on a common optical fiber. CWDM uses multiple wavelengths to expand available
bandwidth.
CWDM SFP transceivers support high speed data communications for Metropolitan Area Networks
(MAN). The system uses a grid of eight CWDM optical wavelengths in both ring and point-to-point
configurations. All components are color-coded by wavelength.
Important:
The attainable cable length can vary depending on the quality of the fiber optic cable used.
SFP transceivers
December 2016 Installing Transceivers and Optical Components on Avaya VSP Operating System
Software 23
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