Enterasys Networks 802.1Q manual Changing the Port Mode

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Port Assignment Configuration Screen

Field Definitions

Table 3-3 Port Assignment Configuration Screen Field Definitions

Use this field …

To …

 

 

Port

See the port numbers of the interfaces of the current module.

(Read-Only)

 

 

 

Port Mode

Display the current operational mode for the corresponding port and

(Selectable)

select one of three modes: HYBRID, 1Q TRUNK, or ID TRUNK.

 

The default is HYBRID.

 

 

VLAN ID (Selectable)

Select the ID number of the VLAN that is associated with the current

 

port (Port VLAN ID). This is the VLAN ID into which any untagged

 

frame will be classified. The default PVID is 0001.

 

 

FID (Read-Only)

Display the FID associated with the VLAN ID. This field updates as

 

the associated VLAN ID field is changed.

 

 

VLAN Name

Display the name that is associated with the current VLAN ID. If a

(Read-Only)

name was not assigned to a VLAN, “NOT DEFINED” displays as

 

the VLAN name.

 

 

3.5.1Changing the Port Mode

To change the operational mode of a port, proceed as follows.

1.Use the arrow keys to highlight the PORT MODE field for the module and port combination you wish to change.

2.Use the SPACE bar or BACKSPACE key to step through the available selections. A port may be configured for any of the following modes:

•HYBRID – This is the default mode for all ports on the switch. The initial Port VLAN List includes the PVID with a frame format of untagged. Any other VLANs desired for the Port VLAN List need to be manually configured. By changing the default mode to 1Q Trunk or 1D Trunk, the Port VLAN List and the associated frame type are automatically configured.

•1Q TRUNK – This mode sets the port for transmitting to another 802.1Q aware device. In this mode, all frames are transmitted with a tag header included in the frame (excluding BPDUs). The switch will drop all untagged frames it receives on the 1Q Trunk port. The Port VLAN List for the port includes all VLANs.

VLAN Configuration 3-15

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Contents 802.1Q Vlan User’s Guide Page Page Page Contents Iv Contents Figures Tables Structure of this Guide Using this GuideDocument Conventions Related DocumentsDefining VLANs Virtual Local Area NetworksExample of a Vlan Types of VLANsSecureFast VLANs 1 802.1Q VLANsOther Vlan Strategies Benefits and RestrictionsVlan ID Vlan TermsGeneric Attribute Registration Protocol Garp Your email address Getting HelpVlan Components DescriptionDefining a Vlan Configuration ProcessClassifying Frames to a Vlan Customizing the Vlan Forwarding ListInside the Switch Vlan Switch OperationForwarding Decisions Receiving Frames from Vlan PortsBroadcasts, Multicasts, and Unknown Unicasts Known Unicasts Garp Switch OperationPage Switch Without VLANs Managing the SwitchSwitch Management with Only Default Vlan Switch with VLANsSwitch Management with VLANs 802.1Q Vlan Screen Hierarchy Summary of Vlan Local ManagementWhen to Use 802.1Q Vlan Configuration Menu ScreenScreen Example How to AccessMenu Definitions Device Vlan Configuration Screen Device Vlan Configuration Screen Toggle Field DefinitionsVlan Name lower part Renaming a Vlan Changing the Vlan to FID AssociationEnabling VLANs Deleting a VlanDisabling VLANs Paging Through the Vlan List Changing the Forwarding ModePort Assignment Configuration Screen Port Assignment Configuration ScreenPort Mode Changing the Port ModeAssigning a Vlan ID Paging Through the Port List Port Filtering Configuration ScreenSee the names of the VLANs associated with the Vlan ID. If a Displaying Vlan IDs Associated with a Port Filter Using VlanSelecting the Type of Filtering for a Port Vlan Forwarding Configuration ScreenPort Type Paging Through Vlan Forwarding List Entries Viewing Current Vlan PortsAdding Forwarding List Entries Changing the Frame Format Deleting Forwarding List EntriesProtocol Vlan Configuration Screen Protocol Vlan Configuration ScreenVlan ID Protocol Type Ether type Assigning a Protocol Family to a Vlan ID28VLAN Configuration Displaying the Protocol Types on Current Ports Protocol Ports Configuration Screen10 Protocol Ports Configuration Screen Delete ALL Adding/Deleting Ports Associated with a Vlan IDQuick Vlan Walkthrough 32VLAN Configuration11 Walkthrough Stage One 12 Walkthrough Stage Two Test Vlan 14 Walkthrough Stage Four 15 Final Walkthrough Stage Page Examples Example 1, Single Switch OperationSwitch Configured for VLANs Solving the ProblemFrame Handling Example 2, VLANs Across Multiple SwitchesExample 2, VLANs Across Multiple Switches Switch Bridge 1 Broadcasts Frames Transmitting to Switch Transmitting to Bridge Example 3, 1D Trunk Connection to 802.1Q Vlan NetworkExample 3, 1D Trunk Connection to 802.1Q Vlan Network Switch 4 is set as follows Frame Handling Switch 2 Forwards to 1Q Trunk 10 Switch 1 Forwards to 1D Trunk Example 4, Isolating Network Traffic According to Protocol 11 Example 4, Isolating Traffic According to Protocol 16Examples Example 4, Isolating Network Traffic According to Protocol 18Examples Numerics IndexIndex-2 Index-3

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.
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