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-EX
can 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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