Rosewill RC-401-Dual-EX user manual Virtual LAN VLAN Support

10/100/1000Mpbs PCIe LAN Card RC-401-Dual-EX User Manual

Virtual LAN (VLAN) Support

Avirtual LAN is a group of network devices that belong to the same network segment, regardless of the physical network structure. A logical network structure based on business requirements is possible. With virtual networks, physical location no longer specifies the network auser is assigned to: user clinetswith similar networking requirements can be united in one network griop, or VLAN. This VLAN can be established to meet a wide variety of organizational or technical needs. All members of a department can, for example, be gathered into a network group,even if they are distributed over several buildings. Colleagues working on the same project can be bunited in a common VLAN, even if they belong to different departments in different buildings or even different locations. Other network groups can be made invisible to these users. Using virtual LANs can improve network performance, limit broadcast storms, minimize security problems and ease the management task.

By means of Frame Tagging, the RC-401-Dual-EXcan support up to 64 IP address assignments in a single network connection. Thus, multiple VLANs can be configured for one port. Stations can be accessed from systems in multiple IP sub nets without traversing routers. Additionally, multiple application VLANs can be defined to isolate traffic for performance and security purposes. For this reason, the server can be physically connected to a single switch port but still belong to several VLANs. The Gigabit Ethernet adapter can receive tagged packets and is able to tag outgoing packets. The switch the adapter is connected to must support VLAN tagging according to IEEE 802.1q.

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