User manual D-LINK DES-1008P

[. . . ] e) Reliable Earthing- Reliable earthing of rack-mounted equipment should be maintained. Particular attention should be given to supply connections other than direct connections to the branch circuit (e. g. , use of power strips). Ver. 1. 00 TABLE OF CONTENTS About This Guide. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Purpose . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] The Switch will automatically detect the network appliance's requirements, and will supply the required power to each appliance accordingly. Purpose This guide discusses how to install your 8-Port 10/100Mbps Fast Ethernet Switch with 4-Port PoE. Terms/Usage In this guide, the term "Switch" (first letter upper case) refers to your 8-Port 10/100Mbps Fast Ethernet Switch with 4-Port PoE and "switch" (first letter lower case) refers to other Ethernet switches. 1 INTRODUCTION This chapter describes the features of the D-Link DES-1008P Fast Ethernet PoE Switch and some background information about Ethernet/Fast Ethernet, Switching and Power over Ethernet technology. Fast Ethernet Technology The growing importance of LANs and the increasing complexity of desktop computing applications are fueling the need for high performance networks. A number of high-speed LAN technologies have been proposed to provide greater bandwidth and improve client/server response times. Among them, 100BASE-TX (Fast Ethernet) provides a non-disruptive, smooth evolution from the current 10BASE-T technology. 100Mbps Fast Ethernet is a standard specified by the IEEE 802. 3 LAN committee. It is an extension of the 10Mbps Ethernet standard with the ability to transmit and receive data at 100Mbps, while maintaining the CSMA/CD Ethernet protocol. Since the 100Mbps Fast Ethernet is compatible with all other 10Mbps Ethernet environments, it provides a straightforward upgrade and takes advantage of the existing investment in hardware, software, and personnel training. 2 Switching Technology Another approach to pushing beyond the limits of Ethernet technology is the development of switching technology. A switch bridges Ethernet packets at the MAC address level of the Ethernet protocol transmitting among connected Ethernet or Fast Ethernet LAN segments. Switching is a cost-effective way of increasing the total network capacity available to users on a local area network. A switch increases capacity and decreases network loading by dividing a local area network into different segments, which don't compete with each other for network transmission capacity. The switch acts as a high-speed selective bridge between the individual segments. The switch, without interfering with any other segments, automatically forwards traffic that needs to go from one segment to another. By doing this the total network capacity is multiplied, while still maintaining the same network cabling and adapter cards. Switching LAN technology is a marked improvement over the previous generation of network bridges, which were characterized by higher latencies. Routers have also been used to segment local area networks, but the cost of a router, the setup and maintenance required make routers relatively impractical. Today switches are an ideal solution to most kinds of local area network congestion problems. 3 Power over Ethernet (PoE) Power over Ethernet (PoE) integrates power and data onto one single cabling infrastructure, eliminating the need to have AC power available at all locations. Power and Data is integrated onto the same cable, supporting category 5/5e up to 100 Meters. PoE will provide power to PoE compatible devices, such as IP telephones, wireless LAN access points and IP security cameras. PoE is already widely adopted in the market, saving up to 50% of overall installation costs by eliminating the need to install separate electrical wiring and power outlets. Features 8 ×10/100Mbps Auto-negotiation Fast Ethernet RJ45 ports with 4-port PoE function (port-1 ~ port-4) Compliant with 802. 3af specification Supports PoE power up to 15. 4W for PoE port Supports PoE power up to 56W for all PoE ports Supports PoE IEEE802. 3af compliant Powered Device (PD) Each port supports auto MDI/MDIX, so there is no need to use cross-over cables or an up-link port Full/half duplex transfer mode for each port Wire speed reception and transmission Up to 1K unicast addresses entities per device, self-learning, and table aging 96KBytes packet buffer Supports IEEE 802. 3x flow control for full-duplex mode ports Supports Back-pressure flow control for half-duplex mode ports 4 UNPACKING AND INSTALLATION This chapter provides unpacking and installation information for the Switch. Unpacking Open the shipping cartons of the Switch and carefully unpack its contents. The carton should contain the following items: One DES-1008P One AC power adapter Four rubber feet CD-ROM with Product Document Quick Installation Guide. If any item is found missing or damaged, please contact your local reseller for replacement. Installation The setup of the Switch can be performed using the following steps: The surface must support at least 1. 5 Kg (3. 5 lbs) for the Switch. Visually inspect the DC power jack and make sure that it is fully secured to the power adapter. Make sure that there is proper heat dissipation from and adequate ventilation around the Switch. [. . . ] Since the switch does not include a power switch, plugging its power adapter into a power outlet will immediately power it on. 8 UNDERSTANDING LED INDICATORS The front panel LEDs provides instant status feedback, and helps monitor and troubleshoot when needed. Figure 3. The total power resource for the system is 56W shared between the 4 POE ports (maximum power for per port is 15. 4W). If all POE PDs power consumption is over 56W, the system will automatically arrange the priority of these ports. The lower port number will have the higher priority and the higher port number will have a lower priority (Highest priority: Port 1 > Port 2 > Port 3 > Port 4). [. . . ]