D-Link 12-Port Gigabit xStack L3

With 12 SFP slots, the DGS-3612G provides a full fibre environment for long distance Ethernet infrastructure. It is particularly suitable for ISPs in their Metropolitan Area Network (MAN) deployments. In addition, four 1000Base-T copper ports acting as combo with 4 of the SFP slots are included for flexibility.

With D-Link Single IP Management (SIM) technology, up to 32 switch units -regardless of the model- may be combined in a virtual stack. Multiple switches can be configured, monitored and maintained from any workstation running a web browser via a single IP address. The stack is managed as a single object, as all stacked units are identified by this single IP address. A simple yet powerful web-based interface allows the administrator to perform most management and configuration tasks.

The DGS-3612G includes advanced routing features, such as OSPF v2, Passive Interface, Not-So-Stubby Area (NSSA), Equal Cost Route and RIP. Multicast services such as IP-TV and Video on Demand (VoD) are supported with the inclusion of protocols such as IGMP, MLD and PIM. With Double VLAN (802.1Q-in-Q) support, ISPs can create Layer2 Virtual Private Networks (VPNs) and transparent LANs for their customers.

A complete set of security features is provided for connectivity and access control. These include Access Control Lists (ACLs) based on MAC address, switch port, IP address and/or TCP/UDP port numbers. 802.1X Authentication and MAC address control functionality is furthermore featured. The switch also provides central management for administration access via TACACS/TACACS+ and RADIUS. In addition, when implemented in conjunction with a D-Link NetDefend firewall, this switch is able to automatically quarantine any host displaying abnormal behaviour. This mechanism, D-Link's ZoneDefense, provides proactive network security by preventing viruses from spreading through the network and thwarting harmful network attacks.

The DGS-3612G switch provides VLAN support including GARP/GVRP, 802.1Q and Guest VLAN to enhance network security and performance. The Guest VLAN feature assigns the user to a "Guest VLAN" dynamically if the user does not login on the RADIUS server. If authentication is successful the user will be assigned to the VLAN that is associated with the login information. The switch implements a robust set of multi-layer (L2, L3, L4) QoS/CoS features to ensure that critical network services like VoIP, ERP, Intranet and video conference are prioritized. Bandwidth control allows administrators to set traffic limits on each port, ensuring a committed level of service for end users. For advanced applications, per-flow bandwidth control allows easy fine-tuning of service types based on specific IP addresses or protocols.

In addition, a unique feature, D-Link Safeguard Engine, allows administrators to configure thresholds that limit the impact of packet flooding to the switches CPU typically caused by virus/worm outbreaks. This increases the switch's reliability, serviceability and availability.