Chapter 9 VLAN

Table 20 Advanced Application > VLAN > VLAN Port Setting (continued)

LABEL

DESCRIPTION

*

Settings in this row apply to all ports.

 

Use this row only if you want to make some settings the same for all

 

ports. Use this row first to set the common settings and then make

 

adjustments on a port-by-port basis.

 

Note: Changes in this row are copied to all the ports as soon as you

 

make them.

 

 

PVID

A PVID (Port VLAN ID) is a tag that adds to incoming untagged frames

 

received on a port so that the frames are forwarded to the VLAN group

 

that the tag defines.

 

Enter a number between 1and 4094 as the port VLAN ID.

 

 

GVRP

Select this check box to allow GVRP on this port.

 

 

Acceptable

Specify the type of frames allowed on a port. Choices are All, Tag Only

Frame Type

and Untag Only.

 

Select All from the drop-down list box to accept all untagged or tagged

 

frames on this port. This is the default setting.

 

Select Tag Only to accept only tagged frames on this port. All untagged

 

frames will be dropped.

 

Select Untag Only to accept only untagged frames on this port. All

 

tagged frames will be dropped.

 

 

VLAN Trunking

Enable VLAN Trunking on ports connected to other switches or routers

 

(but not ports directly connected to end users) to allow frames

 

belonging to unknown VLAN groups to pass through the Switch.

 

 

Isolation

Select this to allows this port to communicate only with the CPU

 

management port and the ports on which the isolation feature is not

 

enabled.

 

 

Apply

Click Apply to save your changes to the Switch’s run-time memory. The

 

Switch loses these changes if it is turned off or loses power, so use the

 

Save link on the top navigation panel to save your changes to the non-

 

volatile memory when you are done configuring.

 

 

Cancel

Click Cancel to begin configuring this screen afresh.

9.5 Subnet Based VLANs

Subnet based VLANs allow you to group traffic into logical VLANs based on the source IP subnet you specify. When a frame is received on a port, the Switch checks if a tag is added already and the IP subnet it came from. The untagged packets from the same IP subnet are then placed in the same subnet based VLAN. One advantage of using subnet based VLANs is that priority can be assigned to traffic from the same IP subnet.

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GS2200-24 User’s Guide