User`s manual

Incoming
The Switch classifies packets coming in on a port based on their VLAN identifier (VID)—or lack of one. If
the packet has a VID, the Switch forwards the packet only to the ports for that VLAN.
●
VLAN tagging
If the packet does not have a VID, the Switch assigns one based on what it has learned. It inspects the
packet and places it in a VLAN based on what it learns. It assigns the packet to an existing VLAN in the
following order.
IP address
❍
network protocol type❍
MAC address❍
If there are no matches, the Switch tags the packet with the VID of the port it came in on.❍
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Learning
The Switch learns VLAN membership information by inspecting the source addresses and VLAN
classification of all incoming and outgoing packets and records this information in its forwarding database.
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Filtering and forwarding
Based on the information found in the VLAN database and the port state, the Switch either forwards
packets to other ports or filters them.
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To learn how to use and configure VLANs, see:
Sample VLAN Applications●
Configuring VLANs—Overview●
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