Black Box LGC5950C-R2 Manual De Usuario
BLACK BOX
®
8 of 13
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 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.
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.
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.
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.
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.
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.
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.
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.
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.
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).
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.
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.