Virtual LANs (VLANs) 5-5For information about how to set up VLANs usingAutoSelect VLAN Mode, refer to Chapter 5 onpage 5-11.For more information about the VLAN Server data-base, refer to the documentation supplied with3Com’s Transcend Enterprise Manager.Using Non-routable ProtocolsIf you are running non-routable protocols on yournetwork (for example, DEC LAT or NET BIOS),devices within one VLAN are not able to communi-cate with devices in a different VLAN.Using Unique MAC AddressesIf you connect a server with multiple network adapt-ers to the Switch, we recommend that you config-ure each network adapter with a unique MACaddress.Extending VLANs into an ATM NetworkIf the Switch has an ATM OC-3c Module installed,you can extend the VLANs you have defined inyour existing network into an ATM network. Formore information, refer to the “SuperStack IISwitch ATM OC-3c Module User Guide”.VLAN ConfigurationsYou can set up VLAN configurations more easily ifyou use 3Com’s Transcend Enterprise Manager appli-cations for all the management tasks.Example 1The example shown in Figure 5-5 illustrates asimple VLAN configuration with a single Switch1000 whose ports are divided between two VLANs.VLAN 1 is able to talk to VLAN 2 using the connec-tion between each VLAN and the router.To set up this configuration:1 Use the VT100 screens or VLAN Server database to:a Place ports 1–6 and 13–18 in VLAN 1.b Place ports 7–12 and 19–24 in VLAN 2.2 Connect a port in VLAN 1 to the router.3 Connect a port in VLAN 2 to the router.Figure 5-5 VLAN configuration with a single Switch 1000 unit
