Device VLAN Configuration Screen

3.Use the arrow keys to highlight the SAVE command at the bottom of the screen.

4.Press ENTER. The message “SAVED OK” displays.

NOTE: The default VLAN cannot be disabled.

3.4.7Changing the Forwarding Mode

To change the forwarding mode of the switch, proceed as follows:

1.Use the arrow keys to highlight the Forward Default VLAN Out All Ports field.

2.Press the SPACE bar or BACKSPACE to toggle between YES and NO. The YES selection places the default VLAN (VLAN ID=1) in the Port VLAN Lists of all ports on the switch. The NO selection removes the default VLAN from the Port VLAN Lists of all ports, unless those ports have a PVID of 1 (those belonging to only the Default VLAN).

3.Use the arrow keys to highlight the SAVE command at the bottom of the screen.

4.Press ENTER. The message “SAVED OK” displays.

3.4.8Paging Through the VLAN List

To display additional VLANs that do not display in the current VLAN List as shown on the screen, use the NEXT or PREVIOUS commands located at the bottom of the screen, as follows:

NOTE: The NEXT and PREVIOUS fields will only display if there are further VLAN List entries to page through.

1.To display the next screen, use the arrow keys to highlight NEXT. Press ENTER to view the entries on the next screen.

2.To display the previous screen, use the arrow keys to highlight PREVIOUS. Press ENTER to view the entries on the previous screen.

VLAN Configuration 3-13

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Enterasys Networks 802.1Q manual Changing the Forwarding Mode, Paging Through the Vlan List

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.