BayStack 450 10/100/1000 Series Switches309978-D Rev 01 1-53• Unregistered packet -- a tagged frame that contains a VID where the receivingport is not a member of that VLAN.• Filtering database identifier (FID) -- the specific filtering/forwarding databasewithin the BayStack 450 switch that is assigned to each VLAN. The currentversion of software assigns all VLANs to the same FID. This is referred to asShared VLAN Learning in the IEEE 802.1Q specification.The default configuration settings for BayStack 450 switches have all ports set asuntagged members of VLAN 1 with all ports configured as PVID = 1. EveryVLAN is assigned a unique VLAN identifier (VID) that distinguishes it from allother VLANs. In the default configuration example shown in Figure 1-23, allincoming packets are assigned to VLAN 1 by the default port VLAN identifier(PVID = 1). Untagged packets enter and leave the switch unchanged.Figure 1-23. Default VLAN SettingsPort 1DASADataCRCIncominguntaggedpacketBS45010APort 2 Port 3 Port 4 Port 5VLAN 1802.1Q SwitchBy default:KeyAll ports are assigned PVID = 1All ports are untagged members of VLAN 1PVID = 1Port 6 Port 7 Port 8DASADataCRCOutgoinguntagged packet(unchanged)
