Datasheet

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11/1/2010
#24435
Layer 2 Media Converter Modules
Unlike Layer 1 media converters, which only convert one Ethernet
media type to another, Layer 2 Media Converter Modules for the
High-Density Media Converter System II are true switches—they
actively store, filter, and forward Ethernet packets like any other MAC
layer switch.
Layer 2 converters increase network efficiency and reduce network
overhead, significantly increasing data throughput.
Because Layer 2 converters are also switches, they incorporate
10/100 or 10/100/1000 ports in contrast to the single-speed ports
of Layer 1 converters. You can set the RJ-45 ports for autonegotiation
or set them for 10-, 100-, or 1000-Mbps speed as well as for half-
or full-duplex. The fiber port can be set for half- or full-duplex, too.
Layer 2 Media Converter modules include the LinkLoss feature,
which notifies you of “silent failures” on copper-to-fiber links.
With LinkLoss, a fault on the fiber port is mirrored to the Ethernet
twisted-pair port. If the fiber link is lost at the converter, the converter
disables the twisted-pair Link LED so you can see at a glance that the
link is down.
Twisted-pair ports feature autocrossover ports to eliminate the
worry of whether to use straight- or cross-pinned cabling. This built-in
MDI/MDI-X function determines automatically whether the converter
has to cross over between the four pairs on the twisted-pair port’s
RJ-45 connector.
10BASE-T/100BASE-TX to 100BASE-FX/LX
These converters feature an autosensing 10/100 copper port and
a 100-Mbps fiber port. They’re a good choice for remote Fast Ethernet
connections to Ethernet devices that may later be upgraded to Fast
Ethernet.
10BASE-T/100BASE-TX to 100BASE-LX Single-Strand
These modules extend Fast Ethernet connections over a single strand
of fiber cable by compressing the transmit and receive wavelengths into the
one single-mode strand. The copper port is autosensing for speed; the fiber
port is Fast Ethernet.
10BASE-T/100BASE-TX/1000BASE-T to 1000BASE-SX
Choose these short-range modules for Gigabit Ethernet connections
of up to 220 meters (721.8 ft.). Autosensing 10-/100-/1000-Mbps ports
on the copper side provide maximum versatility.
10BASE-T/100BASE-TX/1000BASE-T to 1000BASE-X
These modules achieve Gigabit throughput at distances of up to 70
kilometers (43.4 mi.) over single-mode cable. The copper port supports
Ethernet, Fast Ethernet, and Gigabit Ethernet and autonegotiates speed
and duplex.
10BASE-T/100BASE-TX/1000BASE-T to 1000BASE-SSLX
Single-Strand
Send Gigabit Ethernet at distances of up to 15 or 40 kilometers
(9.3 or 24.8 mi.) over a single fiber strand. Maximum fiber utilization plus
autosensing 10/100/1000 ports make it extremely versatile.
Multiport 10BASE-T/100BASE-TX Ports
Switch between five 10-/100-Mbps copper ports and increase port
density in your system. This copper switching module enables you to
extend Ethernet up to 328 feet away from a source.
Multiport 10BASE-T/100BASE-TX to 100BASE-FX SFP
Available in 3- and 4-port models, this switch module supports
plugging in one or two optional SFPs for switching to 100-Mbps fiber
backbone(s).
Multiport 10BASE-T/100BASE-TX to 100BASE-FX/LX
Instead of a switching module with SFP slots, you can order 10/100
copper-to-fiber modules with fixed ports for duplex or single-strand
fiber connectivity for links up to 40 kilometers (24.8 mi.) over single-
mode fiber. These support up to 1000 MAC address learning, as well
as flow control, autonegotiating, duplex, and MDI-II/MDI-X UTP cable
connection features.