Ross Opengear FED-6943, User Manual, Page: 12 / 92

1–2 • Introduction Fiber Ethernet Switch Transceivers User Manual (Iss. 04)
Overview
The Fiber Ethernet Switch Transceivers are configured in various modes depending on the
number of small form-factor pluggable fiber transceivers (SFPs) installed and the rear module
used. There are up to six user ports (a combination of fiber optic and RJ45 connectors) plus one
GigE (SERDES) port connected to the OG3-FR series frame midplane that communicates with
the switch on the Network Controller Cards.
These seven ports can be configured as a generic switch (any port to any port). They can also be
set up for 1:1 trunking between any ports or redundant/load sharing trunking such as two fiber
links to three or four wired links with auto fail-over. Port based VLAN is also supported as you
can choose to partition the switching ports into virtual private domains assigned on a per port
basis.
The switching function operates transparently for DHCP, ARP, Multicast and Broadcast, and
VLAN services (except where restricted by configuration). Note that the Fiber Ethernet Switch
Transceivers do not provide POE (Power Over Ethernet) but will work with switches that follow
802.3eaf/at.
The Fiber Ethernet Switch Transceivers are fully hot-swappable with all active components on
the front removable module. No active components are installed on the rear module. This design
greatly reduces down time eliminating any need for users to access the back of the openGear
frame.
CWDM Series
Some Fiber Ethernet Switch Transceivers are equipped with Coarse Wavelength Division
Multiplexing (CWDM) lasers. This enables you to expand your current fiber infrastructure from
one wavelength to up to 16 wavelengths on a fiber. These models are identified with a two digit
suffix in their name (e.g. FET-6945-27 and FET-6945-49).
High Sensitivity Series
Some Fiber Ethernet Switch Transceivers are equipped with high sensitivity SFPs for increased
link budgets. These cards are compatible with standard 1310nm receivers, and the CWDM
receivers from 1270nm to 1610nm (attenuation may be required to reduce optical power below
-10dBm).