User manual D-LINK DGS-1016D

[. . . ] D-Link® DGS-1016D DGS-1024D 16/24-Port 10/100/1000Mbps Gigabit Ethernet Switch Manual Building Networks for People RECYCLABLE (August 2010) D-Link DGS-1016D/DGS-1024D Unmanaged Gigabit Ethernet Switch Information in this document is subject to change without notice. Reproduction in any manner whatsoever without the written permission of D-Link Corporation is strictly forbidden. Trademarks used in this text: D-Link and the D-LINK logo are trademarks of D-Link Corporation; Microsoft and Windows are registered trademarks of Microsoft Corporation. Other trademarks and trade names may be used in this document to refer to either the entities claiming the marks and names or their products. [. . . ] 1p are mapped to the Switch's priority tags as follows:  The Switch uses strict priority for Scheduling. Strict priority-based scheduling, any packets residing in the higher priority queues are transmitted first. D-Link Green Technology D-Link Green Technology implements special power-saving features under speed at 1000Mbps that detect cable length and link status and adjust power usage accordingly. D-Link Green Technology saves energy in two specific ways: Method 1: If there is no link on a port, such as when there is no computer connected to the port or the connected computer is powered off, Green Ethernet Technology will enter a "sleep mode", drastically reducing power used for that port. Method 2: D-Link Green Ethernet detects the length of connected Ethernet cable and adjusts power usage accordingly without affecting performance. This way, a port connected to a cable which is less than 10m only uses as much power as it needs, instead of using full power, which is only needed for 100m cables. Front-Panel Components Note: The Switch illustrations used for this manual depict only the model DGS-1016D Switch. LED status indicators 16 Auto-Negotiating 10/100/1000Mbps ports on the DGS-1016D 24 Auto-Negotiating 10/100/1000Mbps ports on the DGS-1024D Front Panel View of the Switch LED Indicators The LED indicators of the Switch include a Power status indicator and Link/Act/Speed indicator for each port. When the Switch is powered on or restarted, it initiates a diagnostics function as part of the boot up process. The Link/Act/Speed indicators are also used to display Cable Diagnostics information when the Switch boots up. LED Indicators Cable Diagnostics When the Switch is booted up (when the Switch is first powered on), the Cable Diagnostics function is initialized and run. The Cable Diagnostics function will detect two common faults in an Ethernet cable connecting the Switch to a remote network device: an open circuit (a lack of continuity between the pins at each end of the Ethernet cable or a disconnected cable), and a short circuit (two or more conductors short-circuited). Any of these common cable faults will be detected by the Cable Diagnostics function and the LEDs will display the results of the Cable Diagnostics function as follows: Open or Short circuit - Link/Act/Speed: Amber Cable Connection in good status - Link/Act/Speed: Green During the diagnostics, each port is scanned to determine if the Ethernet cable and connectors is in good working order. During the diagnostics process the LED for each port blinks green in sequential order. If a cable fault is detected, the corresponding port’s Link/Act/ Speed LED will light amber. NOTE: the Cable Diagnostics function does not detect the length of Ethernet cabling. Remember that the length of cabling between two Ethernet devices may not exceed 100 meters (or 300 feet). LED Indicator Power Description This lights green while the Switch is receiving power. When connected to a 1000Mbps device, this LED indicator light is green when the port is connected to a device and will blink as data is transmitted or received. When connected to a 10/100Mbps device, this LED indicator light is amber when the port is connected to a device and will blink as data is transmitted or received. Link/Act/Speed Cable Diagnostics (during boot up only) Open or short circuit  Link/Act/Speed LED light amber Power Input on Rear Panel The power cable connection is located on the rear panel of the Switch. Rear panel view of the Switch Switch power input is provided by and internal universal power supply (100-240VAC, 50-60Hz, 0. [. . . ] A network of connected computing resources (such as PCs, printers, servers) covering a relatively small geographic area (usually not larger than a floor or building). Latency – The delay between the time a device receives a packet and the time the packet is forwarded out of the destination port. An Ethernet port connection where the transmitter of one device is connected to the receiver of another device. An Ethernet port connection where the internal transmit and receive lines are crossed. [. . . ]