Network Setup
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Typically, a tagged VLAN interface is used when you want to join an existing VLAN on
the network, and an untagged VLAN interface is used when you are using the port based
VLAN feature to isolate the ports so that you can configure each of them individually.
Limitations of port based VLANs
There are few further limitations to keep in mind when using port based VLANs:
•
The total bandwidth from the switch into the CPU is 100Mbps, which is shared
between the 4 ports. This may limit the bandwidth available to a single port when
perform general routing, packet filtering and other activities.
•
Port based VLANs can only be enabled if there are less than 16 total VLANs.
•
Switch A can only have one default VLAN, and any ports that are not explicity
assigned to another VLAN are automatically placed on the default VLAN. The
default VLAN is untagged.
•
You cannot add tagged VLANs to port A1; it is a member of the default VLAN only.
Enabling port based VLANs
Note
If you previously selected 1 LAN Port, 3 Isolated Ports in the Switch Configuration
step of the Quick Setup Wizard, port based VLANs are already enabled.
Select Network Setup from the Networking menu. Next to the port based VLAN
capable interface (Switch A on the SG560, SG565 and SG580), click the Edit icon then
the Ethernet Configuration tab.
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