76 Configuring VLANs—End—VlanMacLearning - Auto Learn tab fields describes the VLAN Auto Learntab fields.Managing the VLAN forwarding databaseIn the ERS 8300, each VLAN has its own forwarding database.This section includes the following topics:•• "Viewing the forwarding database" (page 77)• "Clearing learned MAC addresses from the forwarding database" (page79)• "Configuring static forwarding" (page 80)• "About MAC-layer bridge packet filtering" (page 83)• "Configuring VLAN forwarding database filters" (page 83)Configuring aging in the VLAN forwarding databaseTo configure the VLAN forwarding database aging timeout period:Step Action1 Select VLAN > VLANs from the Device Manager menu bar.The VLAN dialog box appears with the Basic tab selected. SeeFigure 20 "VLAN dialog box - Basic tab" (page 58).2 Select a VLAN in the VLAN dialog box.3 Click Bridge.The Bridge, VLAN dialog box appears with the Transparent tabselected. See "Bridge, VLAN dialog box - Transparent tab" (page76).The tab displays learned entry discards.Bridge, VLAN dialog box - Transparent tabNortel Ethernet Routing Switch 8300Configuration — VLANs, Spanning Tree, and Static Link Aggregation using Device ManagerNN46200-510 03.01 Standard4.0 27 August 2007Copyright © 2005-2007, Nortel Networks.