Sun Microsystems 806-2989-10 manual Configuring VLANs, An Overview of VLANs

C H A P T E R 5

Configuring VLANs

This chapter explains VLANs in detail and provides configuration instructions and examples.

■VLANs: Virtual Local Area Networks (VLANs) are commonly used to split up groups of network users into manageable broadcast domains, to create logical segmentation of workgroups, and to enforce security policies among each logical segment. With multiple VLANs on an adapter, a server with a single adapter can have a logical presence on multiple IP subnets. By default, 512 VLANs can be defined for each VLAN-aware adapter on your server. However, this number can be increased by changing the system parameters. VLANs are currently supported for gigabit mode only.

If your network does not require multiple VLANs, you can use the default configuration, in which case no further configuration is necessary.

Note –If you did not install the VLAN packages when you installed the driver, you must unconfiguration all ce networking interfaces and unload the driver before you can configure VLAN.

An Overview of VLANs

VLANs allow you to split your physical LAN into logical subparts, providing an essential tool for increasing the efficiency and flexibility of your network.

VLANs are commonly used to separate groups of network users into manageable broadcast domains, to create logical segmentation of workgroups, and to enforce security policies among each logical segment. Each defined VLAN behaves as its own separate network, with its traffic and broadcasts isolated from the others, increasing the bandwidth efficiency within each logical group.

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