3 of 3
TECH SPECS
Broadcast Storm —
Multicast/Broadcast/Unknown-Unicast Storm suppression
Buffer —
Frame: 208 KB on chip
Environmental —
Operating temperature: 32 to 122°F (0 to 50°C);
Humidity: 5 to 90%, noncondensing
MAC Addresses —
8K
Management —
SNMP v1, v2c; MIB-II; RMON MIB
Port Mirroring —
Support for 1:N RX port mirroring;
Port sniffer: TX Monitor Mode, RX Monitor Mode, and TX-RX Pair Monitor
Mode
QoS Supported —
Layer 4 TCP/UDP port and ToS classification; 802.1p QoS
with two-level priority queue; priority in a Q-in-Q tag
Standards —
IEEE 802.3, IEEE 802.3u, IEEE 802.3ab, IEEE 802.3z, IEEE 802.3x,
IEEE 802.1q, IEEE 802.1w, ANSI/IEEE 802.3 autonegotiation
Switching Capacity —
Non-blocking wire-speed performance; 9K jumbo
frame support
VLAN Capabilities —
Port-based VLANs; IEEE 802.1q tag-based VLANs, up to
256 active VLANs; Q-in-Q for enabling subscriber aggregation
CE Approval —
Yes
Connectors —
Twisted-pair ports: (12) RJ-45;
Dual-media ports: (2) SFP
Indicators —
LEDs: (1) CPU, (1) Power, (12) PoE PSE ACT, (12) PoE Fail,
(12) Link/Act, (12) 10/100/1000 Mbps, (1) SFP 11, (1) SFP 12
Power —
Input: 100–240 VAC, 50–60 Hz, autosensing;
Output: PoE with 48 VDC power through RJ-45 pins 1&2, 3&6; 135 watts
of total power
Size —
1.7"H (1U) x 17.4"W x 8.2"D (4.3 x 44.2 x 20.8 cm)
Weight —
6.6 lb. (3 kg)
1/25/07
#26553
724-746-5500
blackbox.com
Item
Code
PoE L2 Managed Gigabit Switch with (2) Dual-Media SFP Ports
(12) 1000BASE-TX Ports
LPB200A
Add an SFP to convert an SFP port to a fiber port…
SFPs
155-Mbps
850-nm Multimode, LC, 300 m
LFP104
1300-nm Multimode, LC, 2 km
LFP105
1310-nm Single-Mode, LC, 20 km
LFP106
155-Mbps with Extended Diagnostics
850-nm Multimode, LC, 300 m
LFP100
1300-nm Multimode, LC, 2 km
LFP101
1310-nm Single-Mode, LC, 20 km
LFP102
1250-Mbps
850-nm Multimode, LC, 300 m
LFP204
1300-nm Multimode, LC, 2 km
LFP205
1310-nm Single-Mode, LC, 20 km
LFP206
1250-Mbps with Extended Diagnostics
850-nm Multimode, LC, 300 m
LFP200
1300-nm Multimode, LC, 2 km
LFP201
1310-nm Single-Mode, LC, 20 km
LFP202
Twisted-pair Ethernet cable, in addition to carrying data,
can also provide electrical power to low-wattage electrical
devices through a method called Power over Ethernet (PoE).
PoE delivers low-level power—roughly 13 watts at 48 VDC—
over CAT5 or higher copper Ethernet cable to PoE-enabled
devices such as IP telephones, wireless access points, Web
cameras, and audio speakers.
How PoE works.
Ethernet cable that meets CAT5 (or better) standards consists
of four twisted pairs of cable, and PoE sends power over these
pairs to PoE-enabled devices.
In PoE mode A, power and data are sent over the same pair.
Because electricity and data function at opposite ends of the
frequency spectrum, their transmissions don’t interfere with
each other. Electricity has a low frequency of 60 Hz or less,
and data transmissions have frequencies that can range from
10 million to 100 million Hz. This method injects both power
and data on pairs 3 and 6 and pairs 1 and 2.
In PoE mode B, two wire pairs are used to transmit data,
and the remaining two pairs are used for power. This method
can be used for 10BASE-T and 100BASE-TX which transmit data
on two pairs, but cannot be used with Gigabit Ethernet which
uses all four pairs for data transmission.
Basic structure.
There are two types of devices involved in PoE
configurations: Powered Devices (PD) and Power Sourcing
Equipment (PSE).
PDs are devices such as surveillance cameras, sensors,
and wireless access points that operate on PoE.
PSEs provide power to PDs over the Ethernet cable.
PSEs include mid-span and end-span devices. A mid-span
device (often called a power injector) goes between a
network switch and a PD and puts power onto the Ethernet
cable. An end-span device is often a PoE-enabled network
switch that’s designed to supply power directly to the cable
from each port, eliminating the need for a separate switch
and power injector.
PSEs provide power in either PoE mode A or B. PDs accept
power in either mode.
PoE applications.
Power over Ethernet is ideal for providing power to low-
wattage network devices such as surveillance cameras, wireless
access points, and VoIP phones. Most VoIP phones made today
support PoE, enabling them to receive uninterrupted power
through the network without the need for an AC outlet for
each phone. With the addition of network backup power,
VoIP phones will continue to function even during a blackout.
Technically Speaking
