  D-Link's DES-3326 is a high performance Managed Layer 3 Switch that provides users with 24 10/100Mbps Fast Ethernet ports with an optional two port GBIC (Gigabit Interface Converter) module for fast connection speeds and flexibility. With an optional GBIC module, 1000Base-T, 1000Base-SX and 1000Base-LX capabilities, users can increase their network response time at gigabit speeds. Through the use of a RS-232 serial port, the DES-3326 provides switch management functionality that includes: SNMP, Console CLI, Telnet CLI, RMON and Web based management control. The DES-3326 is targeted at workgroup, departmental or backbone computing environments at medium to large businesses. The DES-3326 24 port 10/100Mbps adheres to the following IEEE standards 802.3, 10BASE-T, 802.3u 100BASE-TX The optional gigabit module ports adhere to IEEE 802.3z and IEEE 802.3ab 1000Base-SX/LX and 1000Base-T, which specify flow control, auto-negotiation and full duplex capabilities. The DES-3326 combines both Layer 2 and Layer 3 switching. Layer 2 switching functions can be performed to enable packet distribution. Packets are than forwarded based on the destination/source MAC address lookup. Through the aid of VLAN membership, which adheres to the IEEE 802.1Q standard. The DES-3326 supports the 802.1Q protocol providing a solution to encapsulate untagged frame and prioritizing them through a VLAN ID. The DES-3326 also enables administrators the flexibility to create 96 static VLAN's within the switch. In addition, VLAN makes use of GVRP (GARP VLAN Registration Protocol) for exchange and configuring packet information, pruning unnecessary broadcast and unknown unicast traffic, and managing VLANs on switches that are connected through 802.1Q trunk ports. The DES-3326 switch embraces both IGMP snooping (Internet Group Management Protocol) and GMRP (GARP Multicast Registration Protocol) to optimize the flow of multicast traffic. With IGMP snooping, a series of operations performed by intermediate systems to add the necessary intelligence to optimize the flow of multicast traffic; these intermediate systems (such as Layer 2 switches) listens for IGMP messages, builds mapping tables and associates forwarding filters. Switches use GMRP to dynamically configure switch ports so that IP multicast traffic is forwarded only to those ports associated with multicast hosts. The GMRP protocol is used to register Multicast address on ports to control the flooding of multicast frames. The DES-3326 Port Mirroring feature allow administrators to mirror adjacent ports for the purpose of analyzing incoming and outgoing packets where packets can be studied. Port Trunking, this allows the combining of two or more ports to act as a single link, which effectively increases bandwidth between switches and servers for increased throughput. The DES-3326 Broadcast Storm Protection gives the administrators the option to either forward or discard multicast packets on network segments. Broadcast storm protection controls broadcast data and prevents unnecessary absorption of network bandwidth, which helps maintain network performance. The DES-3326 supports STP (Spanning-Tree Protocol) at layer 2 switching to provide path redundancy and prevents undesirable loops for occurring on the network. It defines a tree that spans all switches in an extended network. Spanning Tree Protocol forces certain redundant data paths into a standby (blocked) state. If one network segment in the Spanning Tree Protocol becomes unreachable, or if Spanning Tree Protocol cost change, the Spanning Tree algorithm reconfigures the spanning tree topology and re-establishes the link by activating the standby path among switches. The DES-3326 Layer 3 forwarding algorithm support for routing protocols such as IP, IPX and AppleTalk for communication offers the flexibility to intelligently determine incoming packets and forward based on MAC address and IP address destination and source address lookup. The DES-3326 IP forwarding functions typically involve a route lookup, decrementing the TTL (Time-To-Live) count and recalculates the checksum, and forwarding the frame with the appropriate MAC header to the correct output port. With the DES-3326 broad range of supported protocols to enhance layer 3 routing include the following: DVRMP (Distance Vector Multicast Routing Protocol) and PIM (Protocol-Independent Multicast). DVRMP implements a proprietary unicast routing protocol in the path route to "prune" the message back. This unicast routing protocol is based purely on hop counts, which is, the number of routers traversed. As a result, the following multicast traffic might not take the same path that the "prune" messages take. PIM on the other hand supports "dense mode" and uses the same features as DVRMP, but not requiring any particular unicast protocol. The DES-3326 utilizes wire-speed IP routing (Layer 3) and wire-speed switching (Layer 2) through the use of an integrated hardware-based ASIC (Application Specific Integrated Circuit) instead of "traditional" routers that employ a CPU to perform routing functions through a routing software. With the use of an ASIC, routing is greatly improved compared to the usage of a CPU for better performance. The DES-3326 employs dynamic routing technology to create and maintain routing tables. Routing protocols that are supported include: RIP, RIP II, and BGP. Through these protocols, the DES-3326 effectively communicates within other switches and routers to create as well as update routing tables. The DES-3326 network security endorses an array of filtering options for network security including password protection, LDAP (lightweight Directory Access Protocol), Ipsec (IP security), RADIUS, SNMP v3, and Policy servers. The DES-3326 QoS (Quality of Service) protocol empowers network administrators with the ability to control available bandwidth for integrated voice, video and data application and increased throughput for time sensitive traffic and mission-critical applications. Click here fo Specs |