D-Link DES 3250TG Switch - 48 ports - managed
This SNMP managed switch provides 48 10/100Mbps Fast Ethernet ports and 2 Mini Combo GBIC ports, allowing 48 workstations and servers to cost-effectively run on your existing twisted-pair network cable. The GBIC ports allow flexible connection to the fiber backbone. Advanced features like port trunking, VLANs and priority queues are provided, allowing a department to effectively deploy a bottleneck-free switching network for easy integration with a larger enterprise or campus network. The switch provides 48 10/100Mbps ports supporting autosensing and auto-negotiation of network speeds and full/half duplex. These ports can connect to workstations and print servers, giving each a dedicated bandwidth. All ports support auto MDI/MDIX uplink, allowing you to connect to workstations, servers, or other switches from any port without the need to change your usual straight-through twisted-pair cables. The copper Gigabit provides an inexpensive alternative solution to fiber-optic. Using your existing low-cost Cat. 5 copper twistedpair wires as the transmission media, these ports allow you to instantly upgrade your servers to Gigabit capability without requiring you to install new, expensive fiber cables. The ports support 10/100/1000Mbps network speed auto-sensing, full/half duplex and auto MDI/MDIX. For flexible fiber connection, 2 Mini GBIC ports are provided for installation of 1000BASE-SX short/medium-distance and 1000BASE-LX long-distance fiber. An optional Mini GBIC transceiver module must be inserted in each of these ports. 802.3x Flow Control support allows your servers to directly connect to the switch for fast, reliable data transfer. At 2000Mbps full duplex, the switch provides high-speed data pipes to your servers with minimum data transfer loss. VLANs improve security and bandwidth utilization by limiting the broadcast domains and confining intra-group traffic within their segments. To segment up the network, nodes supporting IEEE 802.1Q VLAN Tagging connected to the switch can be grouped into different Virtual LANs (VLANs). The switch also supports GVRP (GARP VLAN Registration Protocol) for automatic VLAN configuration distribution. The switch supports Layer 2 802.1p Priority Queue control. Each packet going through the switch can be assigned a queue priority number (in the priority bit). Packets with a higher priority number are allowed to pass first. This function support allows you to attach video servers to the switch to run delay-sensitive applications like video conference. The switch listens to IGMP (Internet Group Management Protocol) messages to build mapping table and associate forwarding filters. It dynamically configures the switch ports to forward IP multicast traffic only to those ports associated with multicast hosts. Port Mirroring function allows you to mirror adjacent ports for the purpose of analyzing incoming and outgoing packets where packet patterns can be studied. Port trunking on 10/100Mbps ports provides an economical alternative for server connection to attain Gigabit bandwidth. Up to 8 10/100Mbps ports can be combined together to create a multi-link load-sharing aggregated bandwidth to a server
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