VLAN Definitions

This window displays VLAN definition information for the associated VLAN model. In this window you can view all the existing VLAN definitions for the model, create new VLAN definitions, define and modify the settings for existing VLANs, and delete VLANs.

	NOTE:	Special care must be taken when configuring an X-Pedition Router. Refer to Configuring VLANs on an X-Pedition Router to review configuration caveats for this device.

To access this window, in the left panel, expand the VLAN Elements folder, then expand the desired VLAN model folder. Within the VLAN model folder, select the VLAN Definitions folder or a VLAN definition within it. The VLAN Definitions window appears in the right panel. Each VLAN model you create is pre-populated with a Default VLAN (VID 1). You can further define this VLAN, and/or you can create other VLANs.

The VLAN Definitions window consists of an upper panel and a lower panel. You can use the panel control buttons to hide or show the panels. The table in the upper panel lists the VLANs currently defined for the selected VLAN model, and gives you an overview of their properties. If you select a VLAN definition in the left panel or in the upper table, the selected VLAN's properties are displayed in the lower portion of the tab, and are available for editing. The lower panel is also used for creating new VLAN definitions.

Once you've defined or edited a VLAN definition, you can use the Device View of the VLAN tab in the Console's main window to enforce the VLAN properties on selected devices or to compare (verify) VLANs in a model against the VLAN settings on selected devices, and update a VLAN definition from the VLAN settings on a selected device.

Console provides table options and tools that let you customize table settings and find, filter, sort, print, and export information in a table. You can access these Table Tools through a right mouse click on a column heading or anywhere in the table body. For more information, see the Table Tools Help topic.

For more information, see How to Work with VLAN Models.

Click the areas in the window for more information.

VLANs in VLAN Model

This table provides information on the VLANs currently associated with the VLAN model selected in the left panel. To view or change the properties of a VLAN, select it in this table or in the left panel. This displays the selected VLAN's properties in the lower part of the tab, and allows you to edit them. You can also delete VLANs from the model by selecting them in this table and clicking Delete. (The Default VLAN for a model cannot be deleted.)

VLAN Name: Alphanumeric name associated with the VLAN ID.

Write VLAN to Device(s): When checked, the VLAN will be written to the device(s) when you enforce.

Dynamic Egress

When checked, the associated dynamic egress setting for the VLAN (Enable or Disable) will be written to the device(s) when you enforce.

	NOTE:	Dynamic Egress is not supported on X-Pedition Routers

X-Pedition Protocol Filter

When checked, the selected protocol filters will be applied in the device(s) when you enforce:

L4 Bridging - IP/IPX only
IP
Bridged-protocols
AppleTalk
DEC
IPX
SNA
IPv6

VLAN ID: (VID) Unique number that identifies the VLAN.

IGMP Status

When checked, the current IGMP (Internet Group Management Protocol) state (Enable or Disable) and the associated IGMP settings for the VLAN will be written to the device(s) when you enforce:

N/A - IGMP is not a part of the VLAN's definition.
Enable - IGMP is a part of the VLAN's definition, and will be enabled.
Disable - IGMP is a part of the VLAN's definition, but is currently disabled.

IGMP Version: Indicates which version of IGMP will be utilized on the port (Version 1 or Version 2).

Switch Query IP: The address of the IGMP Querier on the IP subnet to which this interface is attached.

Query Interval: Interval (in seconds) between general IGMP queries sent by the device. Larger values cause queries to be sent less often. This value must be greater than the Query Response interval. Valid values: 1 through 300. For more information, see IGMP.

Query Response: Maximum amount of time allowed for responses to general IGMP queries. Larger values result in less bursty traffic. This value must be less than the Query Interval. Valid values: 1 through 300. For more information, see IGMP.

Interface Robustness: (Robustness Variable ) Indicates how susceptible the subnet is to lost packets. You might want to increase this value if you expect a subnet to be prone to loosing packets. Valid values: 2 thru 32767. For more information, see Interface Robustness.

Last Member Query Interval: Maximum amount of time (in seconds) between group-specific query messages, including those sent in response to leave-group messages. You might lower this interval to reduce the amount of time it takes the device to detect the loss of the last member of a group. Valid values: 10 through 32767 seconds. See IGMP for more information.

VLAN Definition

This section of the VLAN Definitions window displays the properties of the VLAN selected in the table in the upper panel or the left panel, and enables you to edit them. You can also create a new VLAN in this panel. To save a new VLAN or apply changes to an existing VLAN, click Save.

VLAN Name: Name of the VLAN selected in the upper table. If you create a new VLAN, this box is automatically filled with a new VLAN name (VLAN), which you can change. If you don't change it, the VLAN is named VLAN [n], where n is the value in the VLAN ID text box. Do not create a VLAN name that uses any letters with diacritical marks. Diacritical marked letters are not supported by SNMP.

VLAN ID: VID of the VLAN selected in the upper table. If you create a new VLAN, this box is automatically filled with the next available VID, which you can change if desired.

Write VLAN to Device(s): Check this box if you want this VLAN's properties to be written to the device(s) when you enforce and compared to device settings when you verify.

Dynamic Egress: Check this box to make dynamic egress a factor for this VLAN. To enable dynamic egress, select Enable from the drop-down list.

IGMP Parameters

This section of the VLAN Definitions window allows you to select and edit the IGMP (Internet Group Management Protocol) properties of the VLAN. The IGMP Status box must be checked in order to set the other IGMP parameters. If you turn on an IGMP element with its checkbox, it becomes a factor for the VLAN, and you can specify its appropriate setting using the text box or drop-down list for the element.

IGMP Status: Check this box to make IGMP a part of this VLAN's definition. This box must be checked in order for the other IGMP parameters to be set. To enable IGMP, select Enable from the drop-down list.

IGMP Version: Check this box to make the IGMP version on the port a factor for this VLAN. Select the version of IGMP that will be utilized from the drop-down list: Version 1 or Version 2.

Switch Query IP: The address of the IGMP Querier on the IP subnet to which this interface is attached.

Query Interval: Number of seconds allowed between general IGMP queries sent by the device. Check this box to make the query interval a factor for this VLAN. Enter the number of seconds in the text box, or use the up/down arrows to change the value. Larger values cause queries to be sent less often. This value must be greater than the Query Response interval. Valid values: 1 through 300. For more information, see IGMP.

Query Response: Maximum amount of time allowed for responses to general IGMP queries. Check this box to make the query response time a factor for this VLAN. Enter the number of seconds in the text box, or use the up/down arrows to change the value. Larger values result in less bursty traffic. This value must be less than the Query Interval. Valid values: 1 through 300. For more information, see IGMP.

Interface Robustness: (Robustness Variable ) Indicates how susceptible the subnet is to lost packets. Check this box to make interface robustness a factor for this VLAN. Enter a value in the text box, or use the up/down arrows to change the value. You might want to increase this value if you expect a subnet to be lossy. Valid values: 2 thru 32767. For more information, see Interface Robustness.

Last Member Query Interval: Maximum number of seconds allowed between group-specific query messages, including those sent in response to leave-group messages. Check this box to make the last member query interval a factor for this VLAN. Enter a value in the text box, or use the up/down arrows to change the value. You might lower this interval to reduce the amount of time it takes the device to detect the loss of the last member of a group. Valid values: 10 through 32767 seconds. See IGMP for more information.

New Button: Creates a new VLAN. When you click this button, a new VLAN name appears in the lower left panel and the next available VID is automatically selected. The properties of the previously displayed VLAN are retained. To complete the new VLAN definition, change the VLAN name and/or VID if desired, edit the appropriate properties, and save.

Save Button: Saves the VLAN and its properties as part of the VLAN model.

Delete Button: Removes the currently selected VLAN from the VLAN model. An intermediate confirmation dialog box appears, giving you the opportunity to change your mind before the deletion occurs. Since the Default VLAN for a model cannot be deleted, if you select a Default VLAN as one of a several VLANs to be deleted, only the non-Default VLANs will be deleted.

Related Information

For information on related tasks:

How to Work with VLAN Models

For information on related windows:

Port Template Definitions