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Chapter 2 Network configuration 57
Using the BayStack 380 10/100/1000 Switch
• Unregistered packet—a tagged frame that contains a VID where the receiving
port is not a member of that VLAN.
The default configuration settings for BayStack 380 switches have all ports set as
untagged members of VLAN 1 with all ports configured as PVID = 1. Every
VLAN is assigned a unique VLAN identifier (VID) that distinguishes it from all
other VLANs. In the default configuration example shown in Figure 11, all
incoming packets are assigned to VLAN 1 by the default port VLAN identifier
(PVID =1). Untagged packets enter and leave the switch unchanged.
Figure 11 Default VLAN settings
When you configure VLANs, you configure the switch ports as tagged or
untagged members of specific VLANs (see Figure 12 through Figure 20).
Port 1
DA
SA
Data
CRC
Incoming
untagged
packet
BS45010A
Port 2 Port 3 Port 4 Port 5
VLAN 1
802.1Q Switch
By default:
Key
All ports are assigned PVID = 1
All ports are untagged members of VLAN 1
PVID = 1
Port 6 Port 7 Port 8
DA
SA
Data
CRC
Outgoing
untagged packet
(unchanged)