INS_CWGE10FX2TX8MSPOE 02/19/21 PAGE 70
INSTALLATION AND OPERATION MANUAL
CWGE10FX2TX8MSPOE
TECH SUPPORT: 1.888.678.9427
802.1Q Port base VLAN
With port-based VLAN membership, the port is assigned to a specific VLAN independent of the
user or system attached to the port. This means all users attached to the port should be members
of the same VLAN. The network administrator typically performs the VLAN assignment. The port
configuration is static and cannot be automatically changed to another VLAN without manual
reconfiguration.
As with other VLAN approaches, the packets forwarded using this method do not leak into other
VLAN domains on the network. After a port has been assigned to a VLAN, the port cannot send
to or receive from devices in another VLAN without the intervention of a Layer 3 device.
The device that is attached to the port likely has no understanding that a VLAN exists. The device
simply knows that it is a member of a subnet and that the device should be able to talk to all
other members of the subnet by simply sending information to the cable segment. The switch
is responsible for identifying that the information came from a specific VLAN and for ensuring
that the information gets to all other members of the VLAN. The switch is further responsible for
ensuring that ports in a different VLAN do not receive the information.
This approach is quite simple, fast, and easy to manage in that there are no complex lookup tables
required for VLAN segmentation. If port-to-VLAN association is done with an application-specific
integrated circuit (ASIC), the performance is very good. An ASIC allows the port-to-VLAN mapping
to be done at the hardware level.
Default Settings
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The default PVID is 1 for all ports.
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The default Acceptable Frame is All for all ports.
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All ports join in the VLAN 1.