Chapter 8 VLAN

The following table describes the labels in this screen.

Table 16 802.1Q VLAN Port Settings

LABEL

DESCRIPTION

GVRP

GVRP (GARP VLAN Registration Protocol) is a registration protocol that defines a

 

way for switches to dynamically register necessary VLAN members on ports across

 

the network.

 

Select this check box to permit VLAN groups beyond the local switch.

 

 

Port Isolation

Port Isolation allows each port (1 to 8) to communicate with the CPU port and the

 

shared GBIC ports (9 to 12). The isolated ports (1 to 8) cannot communicate with

 

each other. However, the shared GBIC ports (9 to 12) and the CPU port can

 

communicate with all ports. This option is the most limiting but also the most secure.

 

 

Port

This field displays the port numbers.

 

 

*

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.

 

 

Ingress Check

If this check box is selected for a port, the device discards incoming frames for

 

VLANs that do not include this port in its member set.

 

 

PVID

Each port on the switch is capable of passing tagged or untagged frames. To forward

 

a frame from an 802.1Q VLAN-unaware switch to an 802.1Q VLAN-aware switch, the

 

switch first decides where to forward the frame, and then inserts a VLAN tag

 

reflecting the default ingress port's VLAN ID, the PVID.

 

The default PVID is VLAN 1 for all ports, but this can be changed to any number

 

between 0 and 4094.

 

 

GVRP

Select this check box to permit VLANs groups beyond the local switch on this port.

 

GVRP (GARP VLAN Registration Protocol) is a registration protocol that defines a

 

way for switches to register necessary VLAN members on ports across the network.

 

 

Acceptable

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

Frame Type

Select All to accept all frames with 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 are

 

dropped.

 

 

VLAN

Enable VLAN Trunking on ports connected to other switches or routers (but not

Trunking

ports directly connected to end users) to allow frames belonging to unknown VLAN

 

groups to pass through the switch.

 

 

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 start configuring the screen again.

8.3.3 802.1Q Static VLAN

Use this screen to configure and view 802.1Q VLAN parameters for the switch. You can dynamically have a port join a VLAN group using GVRP, permanently assign a port to be a member of a VLAN group or prohibit a port from joining a VLAN group in this screen. Click Static VLAN in the VLAN Status screen to display the screen as shown next.

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GS-3012/GS-3012F User’s Guide