Virtual Lans (Vlan) - Dell Force10 MXL Blade Configuration Manual

Virtual LANs (VLAN)

This section contains the following subsections:
• Default VLAN
• Port-Based VLANs
• VLANs and Port Tagging
• Configuration Task List for VLANs
• Enable Null VLAN as the Default VLAN
Virtual LANs (VLANs), are a logical broadcast domain, or logical grouping of interfaces in a LAN, in
which all data received is kept locally and broadcast to all members of the group. When in Layer 2 mode,
VLANs move traffic at wire speed and can span multiple devices. The Dell Force10 operating software
(FTOS) supports up to 4093 port-based VLANs and 1 default VLAN, as specified in IEEE 802.1Q.
VLANs provide the following benefits:
• Improved security because you can isolate groups of users into different VLANs
• Ability to create one VLAN across multiple devices
For more information about VLANs, refer to IEEE Standard 802.1Q Virtual Bridged Local Area Networks.
In this guide, see also:
• Bulk Configuration
• VLAN Stacking
For a complete listing of all commands related to FTOS VLANs, refer to these FTOS Command Reference
Guide chapters:
• Interfaces
• Security
• GARP VLAN Registration Protocol (GVRP)
• VLAN Stacking
• Per-VLAN Spanning Tree Plus (PVST+)
in Interfaces
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