212777-A, February 2002 43CHAPTER 2VLANsThis chapter describes network design and topology considerations for using Virtual Local AreaNetworks (VLANs). VLANs are commonly used to split up groups of network users into man-ageable broadcast domains, to create logical segmentation of workgroups, and to enforce securitypolicies among logical segments. The following topics are discussed in this chapter: “VLAN ID Numbers” on page 44 “VLAN Tagging” on page 44 “VLANs and the IP Interfaces” on page 45This section briefly describes how management functions can only be accomplished fromstations on VLANs that include an IP interface to the switch. “VLAN Topologies and Design Issues” on page 45This section discusses how you can logically connect users and segments to a host thatsupports many logical segments or subnets by using the flexibility of the multiple VLANsystem. “VLANs and Spanning Tree Protocol” on page 49 “VLANs and Default Gateways” on page 58 “VLANs and Jumbo Frames” on page 63N OTE – Basic VLANs can be configured during initial switch configuration (see “Using theSetup Utility” in the Web OS Command Reference). More comprehensive VLAN configurationcan be done from the Command Line Interface (see “VLAN Configuration” as well as “PortConfiguration” in the Web OS Command Reference).
