User manual D-LINK DES-1048G

[. . . ] D-Link TM DES-1048G 48-Port 10/100Base-T and 2 Mini-GBIC Port Unmanaged Ethernet Switch Manual Second Edition Building Networks for People RECYCLABLE ____________________ Information in this document is subject to change without notice. Reproduction in any manner whatsoever without the written permission of D-Link Computer Corporation is strictly forbidden. Trademarks used in this text: D-Link and the D-Link logo are trademarks of D-Link Computer 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. [. . . ] 5 (100 meters max. ) EIA/TIA-568 100-ohm STP (100 meters max. ) Network Cables 1000BASE-SX 50/125µm Multimode Fiber-optics (550 meters max. ) 62. 5/125µm Multimode Fiber-optics (275 meters max. ) 1000BASE-LX 50/125µm Multimode Fiber-optics (550 meters max. ) 62. 5/125µm Multimode Fiber-optics (275 meters max. ) Ports 48 10/100BASE-T Ethernet ports in front panel 2 1000Mbps Mini-GBIC ports Physical & Environmental AC Inputs: Power Consumption: DC Fan: Operating Temperature: Storage Temperature: Humidity: Dimensions: Weight: 100 - 240 VAC, 50/60 Hz (internal universal power supply) 24 watts maximum 2 built-in 40 x 40 x 10 mm fans 0 to 40 degrees Celsius -25 to 55 degrees Celsius Operating: 5% to 95% RH non-condensing Storage: 0% to 95% RH non-condensing 441 mm x 309 mm x 44 mm (1U), 19 inch rack-mount width 3. 9 Kg 11 Standard D-Link DES-1048G Unmanaged Layer 2 Ethernet Switch EMI: Safety: FCC Class A, CE Class A CSA International Performance Transmission Method: RAM Buffer: Filtering Address Table: Packet Filtering/ Forwarding Rate: MAC Address Learning: Store-and-forward 2 Mbyte per device 8K MAC address per device Full-wire speed for all connections. 14, 880 pps for 10M and 148, 809 pps for 100M 1, 488, 090 pps for 1000M Automatic update. 12 D-Link DES-1048G Unmanaged Layer 2 Ethernet Switch Glossary 1000BASE-SX ­ 1000Mbps Ethernet implementation over fiber-optic cable, intended for shorter distances, such as within a building. 1000BASE-LX ­ 1000Mbps Ethernet implementation over fiber-optic cable, for longer distances, such as a college campus. 100BASE-TX ­ 100Mbps Ethernet implementation over Category 5 and Type 1 twisted pair cabling. 10BASE-T ­ The IEEE 802. 3 specification for Ethernet over Unshielded Twisted Pair (UTP) cabling. aging ­ The automatic removal of dynamic entries from the Switch Database which have timed-out and are no longer valid. A connection oriented transmission protocol based on fixed length cells (packets). ATM is designed to carry a complete range of user traffic, including voice, data and video signals. auto-negotiation ­ A feature on a port which allows it to advertise its capabilities for speed, duplex and flow control. When connected to an end station that also supports auto-negotiation, the link can self-detect its optimum operating setup. backbone ­ The part of a network used as the primary path for transporting traffic backbone port ­ A port which does not learn device addresses, and which receives all frames with an unknown address. Backbone ports are normally used to connect the switch to the backbone of your network. Note that backbone ports were formerly known as designated downlink ports. bandwidth ­ Information capacity, measured in bits per second, that a channel can transmit. The bandwidth of Ethernet is 10Mbps and the bandwidth of Fast Ethernet is 100Mbps. BOOTP ­ The BOOTP protocol allows you to automatically map an IP address to a given MAC address each time a device is started. In addition, the protocol can assign the subnet mask and default gateway to a device. bridge ­ A device that interconnects local or remote networks no matter what higher level protocols are involved. Bridges form a single logical network, centralizing network administration. broadcast ­ A message sent to all destination devices on the network. broadcast storm ­ Multiple simultaneous broadcasts that typically absorb available network bandwidth and can cause network failure. console port ­ The port on the switch accepting a terminal or modem connector. [. . . ] However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: · · · · Reorient or relocate the receiving antenna. Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. Consult the dealer or an experienced radio/TV technician for help. For detailed warranty outside the United States, please contact corresponding local D-Link office. Offices USA Sweden P. O. [. . . ]