Vlans - D-Link DES-3250TG User Manual

D-Link DES-3250TG Standalone Layer 2 Switch
designated as the master port of the group. Since all members of the link aggregation group must be
configured to operate in the same manner, the configuration of the master port is applied to all
members of the link aggregation group. Thus, when configuring the ports in a link aggregation group,
you only need to configure the master port.
The DES-3250TG supports link aggregation groups, which may include from two to eight switch ports
each, except for a Gigabit link aggregation group which consists of the two (optional) Gigabit Ethernet
ports of the front panel.
Figure 5- 2. Link Aggregation Group
Data transmitted to a specific host (destination address) will always be transmitted over the same port
in a link aggregation group. This allows packets in a data stream to arrive in the same order they were
sent. An aggregated link connection can be made with any other switch that maintains host-to-host
data streams over a single link aggregate port. Switches that use a load-balancing scheme that sends
the packets of a host-to-host data stream over multiple link aggregation ports cannot have an
aggregated connection with the DES-3250TG switch.

VLANs

A VLAN is a collection of end nodes grouped by logic rather than physical location. End nodes that
frequently communicate with each other are assigned to the same VLAN, regardless of where they are
located physically on the network. Logically, a VLAN can be equated to a broadcast domain, because
broadcast packets are forwarded only to members of the VLAN on which the broadcast was initiated.
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