Chapter 2: Overview
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- When one of its hosts joins a multicast address group to which none of its other hosts belong, it sends unsolicited group membership
reports to that group.
- When the last host in a particular multicast group leaves the group, it sends an unsolicited leave group membership report to the all-routers
group (244.0.0.2).
PoE: 8 PoE ports allow power to be supplied to end devices, such as Wireless Access Points or VoIP Phones, directly through the existing
LAN cables, eliminating costs for additional AC wiring and reducing installation costs.
Power Saving
- "Active PHY Power Management" detects when the client is idle. "Perfect Reach Power Management" detects the cable length
automatically, then provides the different (lower) power level needed. This saves switch power and reduces power consumption.
LLDP (IEEE 802.1AB Link Layer Discovery Protocol)
- The switch supports LLDP automated device discovery protocol for easy mapping of network management applications.
2.3 What’s Included
Your package should include the following items. If anything is missing or damaged, please contact Black Box Technical Support at 724-746-
5500 or
.
(1) 8-Port (LPB4008A) or 24-Port (LPB4024A) Gigabit L2 Managed Power-Over-Ethernet Switch
(1) set of 19” rackmounting brackets (LPB4024A only)
(1) AC Power Cord
(1) RS-232 Cable
This user manual on CD-ROM
2.4 Front and Back Panel
There are six or twenty TP Gigabit Ethernet ports plus two or four SFP fiber ports for optional removable modules on the front panel of the
switch. The LED display area on the left side of the panel contains a Power LED that indicates the switch’s power status. 16 port status LEDs
show port status on the LPB4008A, and 48 port status LEDs show port status on the LPB4024A. One RS-232 DB9 interface can be used for
configuration or management.
Front Panel
Figure 2-1. Front panel: LPB4008A.
Figure 2-2. Front panel: LPB4024A.