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12-Port 1000BASE-TX L2 Managed PoE Switch with 2 SFP Dual Media Ports
2. Overview
2.1 Introduction
The 12-Port 1000BASE-TX L2 Managed PoE Switch with 2 SFP Dual Media Ports is standard switch that meet
all IEEE 802.3/u/x/z Gigabit and Fast Ethernet specifications. Manage the switch via an async console directly
connected to the switch's RS-232 port, or through an Ethernet port using CLI or SNMP. In this switch, ports 11,
12 include two types of media --- TP and SFP Fiber (LC, BiDi LC, etc); this port supports 10/100/1000Mbps TP
or 1000Mbps SFP Fiber with auto-detected function. 1000Mbps SFP Fiber transceiver is used for high-speed
connection expansion.
This PoE Switch also complies with IEEE 802.3af, its advanced auto-sensing algorithm enables providing power
devices (PD) discovery, classification, current limit, and other necessary functions. It also supports high safety
with short circuit protection and power-out auto-detection to PD.
This standalone off-the-shelf switch provides comprehensive hardware features. This switch has 10 RJ-45
twisted-pair ports and 2 STP fiber transceiver module slots (for STP fiber [LC or BiDi LC] modules). The
1000-Mbps SFP fiber transceiver is used for high-speed connection expansion. These two ports auto detect
whether the 10/100/1000-Mbps TP or the 1000-Mbps SFP fiber port is used. On this switch, ports 11, 12 can be
twisted-pair or Ethernet. Multimode or single-mode fiber transceiver modules plug into these two ports. (See
Section 2.4 for more information about the fiber transceiver modules.)
The LPB200A has a 208 KB on-chip frame buffer. The switch features jumbo frame support, programmable
classifier for QoS (Layer4/Multimedia), 8K MAC address and 4K VLAN support (IEEE 802.1a), per-port
shaping, policing, and Broadcast Storm Control, IEEE 802.1q-in-q nested VLAN support, full-duplex flow
control (IEEE 802.3x) and half-duplex backpressure, and extensive front-panel diagnostic LEDs.
Software features include port status and configuration, per-port traffic monitoring counters, system
information snapshot upon login, port mirroring, static trunk, and 802.1q VLAN. The switch also supports user
management and limits three users to login to enhance security. The maximum packet length can be up to
9208 bytes for a jumbo frame application. More features include DHCP broadcasting suppression to avoid a
suspended or crashed network, sending trap event for monitored events, default configuration that can be
restored to overwrite the current configuration working on either a Web browser or CLI, online plug/unplug
SFP modules, port mirror function with Ingress traffic, rapid spanning tree (802.1w RSTP), 802.1x port security
on a VLAN, user management, and only the first login administrator can configure the device.
With the SNMP agent, the network administrator can log in to the switch to monitor, configure, and control
each port's activity. The overall network management is enhanced and the network efficiency is also improved
to accommodate high-bandwidth applications. In addition, the switch features comprehensive and useful
functions such as QoS (Quality of Service), Spanning Tree, VLAN, Port Trunking, Bandwidth Control, Port
Security, SNMP/RMON, and IGMP Snooping capability via the intelligent software. These functions are
described below and on the next page. The switch is suitable for both metro-LAN and office applications.
• QoS complies with the IEEE802.1p standard. There are two priority queue and packet transmission schedules.
• Spanning Tree complies with IEEE802.1d and IEEE802.1w (RSTP: Rapid Spanning Tree Protocol) standards.
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