Configuring Switch Information 255
VLANs function at Layer 2. Since VLANs isolate traffic within the VLAN, a Layer 3
functioning router is needed to allow traffic to flow between VLANs. Layer 3 routers
identify segments and coordinate with VLANs. VLANs are broadcast and multicast
domains. Broadcast and multicast traffic is only transmitted in the VLAN where the traffic
is generated.
VLAN tagging provides a method for transferring VLAN information between VLAN
groups. VLAN tagging attaches a four byte tag to packet headers. The VLAN tag indicates
to which VLAN the packet belongs. VLAN tags are attached to the packet by either the end
station or by the network device. VLAN tags also contain VLAN network priority
information. Combining VLANs and GVRP allows network managers to automatically
disperse VLAN information.To display the VLAN page:
•Click Switch > VLAN in the Tree View. The VLAN page opens.
VLAN Page
The VLAN page contains links for defining the following:
• Defining VLAN Members
• Defining VLAN Ports Settings