9033259 Configuring & Monitoring the Switch 75Configuring VLANsA virtual LAN (VLAN) is a group of devices on one or more LANs that areconfigured such that they can communicate as if they were attached tothe same wire. Because VLANs are based on logical instead of physicalconnections, they are extremely flexible.The most fundamental benefit of VLAN technology is the ability to createworkgroups based on function rather than on physical location or media.For further information, see Appendix B, “Virtual LANs (VLANs) ” on page91.To configure VLANs, do the following:1. Select the Device Control Menu from the Main Menu.2. Select 802.1Q VLAN Static Table Configuration Menu.3. In the VID and VLAN Name fields, enter an ID number (1-2048) anda symbolic alphanumeric name (up to 8 characters) to indentify theVLAN.4. Set the Status field to Active.5. Under Egress Ports for each stack unit, select ports by entering “1,”or enter “0” to remove it from the VLAN.6. Under Forbidden Egress Ports for each stack unit, enter a “1” toprevent a port from being automatically added to this VLAN viaGVRP.Note that you can enable or disable GVRP for the stack from theExtended Bridge Configuration screen on the Device Control Menu.7. To configure other VLANs, select New and press [Enter].Configuring Class of ServiceYou can configure Class of Service parameters using the 802.1P PortPriority Configuration screen. This screen permits you to configure twopriority levels for traffic being forwarded through the switch. Duringperiods of congestion, Class of Service settings ensure that traffic whichhas been assigned high priority is forwarded through the switch ahead ofnormal priority traffic. For further information, see Appendix C, “Class ofService” on page 95.”To configure Class of Service, do the following:1. Select Device Control Menu from the Main Menu.2. Select 802.1P Configuration, then 802.1P Port Priority Configuration.3. For each stack unit, set individual port priorities by entering 0-3 forthe low priority queue or 4-7 for the high priority queue.Note that the default for all ingress ports is zero.