Chapter 15 VLAN
NetAtlas Workgroup User’s Guide
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" A forbidden port cannot be an egress port.
The following table describes the labels in this screen for each VLAN port type.
15.2.2 Removing a VLAN
In the VLAN Configuration screen, select a VLAN and click Delete.
15.3 Introduction to Port-based VLANs
Port-based VLANs are VLANs where the packet forwarding decision is based on the
destination MAC address and its associated port.
Port-based VLANs require allowed outgoing ports to be defined for each port. Therefore, if
you wish to allow two subscriber ports to talk to each other, for example, between conference
rooms in a hotel, you must define the egress (an egress port is an outgoing port, that is, a port
through which a data packet leaves) for both ports.
VLAN Name Enter a descriptive name for identification purposes.
Static VLAN Click on a port in a list to add the selected port to the port list. If a port is not on
any of the three port lists, then it is a normal tagged port. Refer to the following
table for the VLAN port type descriptions.
Egress Ports Select the port(s) to belong to this VLAN.
Forbidden Ports This is a port that is blocked from joining a VLAN group. No frames are
transmitted through this port.
Untag Port This is a port that does not tag all outgoing frames transmitted.
VLAN Status
Preview
Click on a port in the Egress Ports list to add the selected port to the VLAN
Status Preview list. If a port is not selected from any of the three port lists, then
it is a normal tagged port. Refer to Table 78 on page 160 for the VLAN port type
descriptions.
OK Click OK to save the changes and close this screen.
Cancel Click Cancel to close this screen. All unsaved changes will be lost.
Table 77 VLAN Configuration: 802.1Q: Modify (continued)
LABEL DESCRIPTION
Table 78 VLAN Port Type Descriptions
LABEL DESCRIPTION
Egress Ports A port that is in the egress list in a VLAN. Only select this if the connected
device supports IEEE 802.1Q VLAN.
Forbidden Ports A port that is blocked from joining a VLAN group. No frames are transmitted
through this port.
Untag Ports A port that does not tag all outgoing frames transmitted.
Normal Tagged Port A port that joins a VLAN group using GVRP. Outgoing frames are tagged on
this port.
