D-Link DES-3326, Руководство пользователя

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24-port NWay Ethernet Switch User’s Guide
Switch Management and Operating Concepts 55
The switch treats all ports in a link aggregation group as a single
port. As such, aggregated ports will not be blocked by Spanning
Tree. It may be blocked by STP,if network loopoccurred… .)
Data transmitted to a specific host (destination address) will
always be transmitted over the same port in a trunk group. This
allows packets in a data stream to arrive in the same order they
were sent. A trunk connection can be made with any other switch
that maintains host-to-host data streams over a single trunk port.
Switches that use a load-balancing scheme that sends the
packets of a host-to-host data stream over multiple trunk ports
cannot have a trunk connection with the DES-3326 switch.
Setting Up IP Interfaces for VLANs
A Virtual Local Area Network (VLAN) is a network topology
configured according to a logical scheme rather than the physical
layout. VLANs can be used to combine any collection of LAN
segments into an autonomous user group that appears as a single
LAN. VLANs also logically segment the network into different
broadcast domains so that packets are forwarded only between
ports within the VLAN. Typically, a VLAN corresponds to a
particular subnet, although not necessarily.
VLANs can enhance performance by conserving bandwidth, and
improve security by limiting traffic to specific domains.
A VLAN is a collection of end nodes grouped by logic instead of
physical location. End nodes that frequently communicate with
each other are assigned to the same VLAN, regardless of where
they are physically on the network. Logically, a VLAN can be
equated to a broadcast domain, because broadcast packets are
forwarded to only members of the VLAN on which the broadcast
was initiated.