Black Box LPB5028A, Руководство пользователя

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Chapter 2: Introduction
2.4.5 Mode Status LEDs
The Gigabit PoE+ Ethernet Managed Switch Eco has a mode switch. Each LED can switch between Link/ACT mode and Speed
mode when you press the Mode button. When the switch is on Link/ACT mode, each port's LED indicates the link or activity sta-
tus. When switch is in Speed mode, each port’s LED shows the link speed status of the port using different colors.
Table 2-4. Mode Status LED.
LED Condition Status
Link/ACT Green Lights when the corresponding port is in Link/ACT mode.
Speed Green Lights when the corresponding port is in Speed mode.
PoE (Link/ACT) Green Lights when the corresponding port is in PoE (Link/ACT) mode.
2.5 Switch Architecture
The switch operates at wire-speed, transporting multiple packets at low latency on all ports simultaneously.The switch also
operates at full-duplex, which effectively doubles the bandwidth of each connection.
For maximum data integrity, the switch uses store-and-forward technology. With this technology, the entire packet is received into
a buffer and checked for validity before it is forwarded. This prevents errors from being propagated throughout the network.
2.6 Network Management Options
You can also manage the switch over the network via a Web browser or Telnet. The switch includes a built-in network
management agent that allows it to be managed in-band using SNMP or RMON (Groups 1, 2, 3, 9) protocols. It also has an
RS-232 DB9 console port connector on the front panel for out-of-band management. A PC may be connected to this port for
configuration and monitoring out-of-band via a null-modem serial cable. (See Appendix B for wiring options.)
NOTE: For a detailed description of the management features, refer to the user’s manual.
To download the Gigabit PoE+ Ethernet Managed Switch Eco user manual from the Web site:
1. Go to www.blackbox.com
2. Enter the part number (LPB5028A or LPB5052A) in the search box:
3. Click on the “Resources” tab on the product page, and select the document you wish to download.