From Antcor

Contents 1 VLAN 1.1 Adding VLAN Interfaces 1.2 Removing VLAN Interfaces 1.3 Modifying VLAN Interfaces 1.4 Uploading VLAN Interfaces

VLAN

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A Virtual LAN (VLAN) is a group of devices on one or more LANs that are configured so that they can communicate as if they were attached to the same network, when in fact they are located on a number of different LAN segments. Because VLANs are based on logical instead of physical connections, they are very flexible for user/host management, bandwidth allocation and resource optimization. The IEEE 802.1Q specification establishes a standard method for tagging Ethernet frames with VLAN membership information.

The IEEE 802.1Q standard defines the operation of VLAN bridges that permit the definition, operation and administration of Virtual LAN topologies within a Bridged LAN infrastructure. The 802.1Q standard is intended to address the problem of how to break large networks into smaller parts so broadcast and multicast traffic does not require more bandwidth than necessary. The standard also helps provide a higher level of security between segments of internal networks.

To make a router an 802.1Q compliant device, one or more vlan interfaces must be created with the proper tags. This can be accomplished in the VLAN tab of the Ikarus NMS window. VLAN interfaces can be added, removed and managed from this tab.

Adding VLAN Interfaces

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1. In the VLAN tab, click the button. The Create a new VLAN dialog appears. This dialog contains the main fields for configuring a vlan interface. The VLAN TagID field automatically generates a unique VLAN identifier according to 802.1Q.
2. Click the arrow on the Interface dropdown list and select any enabled physical interface or bridge.
3. Type IP/subnet address in the IP Address/Subnet Mask fields. These are required to properly route tagged packets. If there is a need to drop un-tagged panes (not 802.1Q compliant), configure the specific physical interface and any virtual interface with zero IP address.
4. Click Submit to complete the process. The virtual interface Tag number, Interface name and IP/subnet address will appear in the Virtual LAN list.

Removing VLAN Interfaces

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To remove a VLAN Interface, in the VLAN list, select the interface to be deleted. Click the button. The VLAN information will disappear from the list.

Modifying VLAN Interfaces

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1. To modify the settings for a VLAN interface, select the interface and click the button. The Create a new VLAN dialog box appears. The settings for the interface are shown in the fields.
2. Change these settings as required, then click the Submit button. The new settings appear in the VLAN Interface list.

Uploading VLAN Interfaces

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To send the configuration settings to the node, click the button.