- Sun Installation and User's Guide GigaSwift Ethernet Adapter

CHAPTER

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, 128 VLANs can be

defined for each VLAN-aware adapter on your server. However, this number can be

increased by changing the system parameters.

If your network does not require multiple VLANs, you can use the default

configuration, in which case no further configuration is necessary.

■ “Overview of VLANs” on page 63

■ “Configuring VLANs” on page 66

Note – If you change any of the VLAN configuration parameters, you must reboot

the system before the changes take effect. If you make changes and do not reboot,

you may experience configuration problems.

Overview of VLANs

VLANs enable you to split your physical LAN into logical subparts, providing an

essential tool for increasing the efficiency and flexibility of your network.