VLAN Forwarding Configuration Screen

3.6.2Selecting the Type of Filtering for a Port

A port can be set to filter out received frames according to its Port VLAN List. This keeps them from being transmitted and drops all untagged frames from being transmitted. To set this type of filtering, proceed as follows:

1.Use the arrow keys to highlight the Port # field.

2.Use the SPACE bar or BACKSPACE key to step through the available port selections.

3.Use the arrow keys to highlight the Filter Using VLAN List field.

4.Use the SPACE bar or BACKSPACE key to toggle between YES and NO. When set to YES, the switch will drop all incoming frames that are classified with a VLAN tag of a VLAN that does not appear on the Port VLAN List. The default is NO.

5.Use the arrow keys to highlight the Filter All Untagged Frames field.

6.Use the SPACE bar or BACKSPACE key to toggle between YES or NO. When set to YES, the switch will drop all incoming frames that do not have a VLAN tag header. The default is NO.

7.To save the settings, Use the arrow keys to highlight the SAVE command at the bottom of the screen.

8.Press ENTER. The message “SAVED OK” displays. The settings are saved.

3.7VLAN FORWARDING CONFIGURATION SCREEN

When to Use

To perform the following functions:

View the ports included in a VLAN’s Forwarding List.

Define which ports to include in the VLAN’s Forwarding List.

Specify the formats of the frames (Tagged or Untagged) that a VLAN port will forward.

How to Access

Use the arrow keys to highlight the VLAN FORWARDING CONFIGURATION menu item on the 802.1Q VLAN Configuration Menu screen and press ENTER. The VLAN Forwarding Configuration screen displays.

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Enterasys Networks 802.1Q manual Selecting the Type of Filtering for a Port, Vlan Forwarding Configuration Screen

802.1Q specifications

Enterasys Networks, a subsidiary of the Siemens Group, is widely recognized for its comprehensive networking solutions, with a strong emphasis on security, reliability, and performance. One of the key technologies offered by Enterasys is 802.1Q, a critical component of Ethernet networking that establishes standards for VLAN (Virtual Local Area Network) tagging. This technology is essential for enhancing network performance and managing traffic efficiently.

The primary feature of 802.1Q is its ability to create VLANs, which segment a physical network into multiple logical networks. This segmentation improves network security by isolating sensitive data and restricting access to specific users or devices. With VLANs, organizations can reduce broadcast traffic, thereby enhancing overall network efficiency. Different departments within an organization can operate on their own VLAN, ensuring that their traffic is kept separate from others.

One significant technological aspect of 802.1Q is its tagging method. When a frame passes through a switch port configured for IEEE 802.1Q, the switch appends a VLAN tag to the frame. This tag contains important information, such as the VLAN ID, enabling switches and devices throughout the network to identify which VLAN the frame belongs to. This tagging is especially critical in environments where multiple VLANs share the same physical infrastructure.

Another characteristic of Enterasys Networks' implementation of 802.1Q is interoperability with existing network standards and protocols. This means that organizations can implement VLAN tagging without requiring major upgrades or replacements of their switch hardware. Enterasys ensures that its switches are compliant with various industry standards, making it easier for enterprises to integrate these solutions into their existing network settings.

Security is another vital feature of Enterasys Networks’ 802.1Q offering. By leveraging VLANs, organizations can enforce stricter access controls and policies, reducing the risk of unauthorized access to sensitive network segments. This is particularly beneficial for industries with stringent compliance requirements, such as finance and healthcare.

In summary, Enterasys Networks' 802.1Q technology plays a pivotal role in modern networking by facilitating VLAN creation, enabling efficient traffic management, ensuring interoperability, and bolstering network security. As organizations increasingly rely on connected devices and data-driven processes, technologies like 802.1Q are essential for building robust, scalable, and secure networking environments.