Types Of Vlans; Port-Based Vlans - Extreme Networks Summit 200-24 Installation And User Manual

Virtual LANs (VLANs)

Types of VLANs

VLANs can be created according to the following criteria:
• Physical port
• 802.1Q tag
• MAC address
• A combination of these criteria

Port-Based VLANs

In a port-based VLAN, a VLAN name is given to a group of one or more ports on the switch. A port
can be a member of only one port-based VLAN. The Summit 200 series switch supports L2 port-based
VLANs.
For example, on the Summit 200-24 switch in Figure 10, ports 1 through 8, and port 26 are part of
VLAN Sales; ports 9 through 16, and port 25 are part of VLAN Finance; and ports 17 through 24 are part
of VLAN Marketing.
Figure 10: Example of a port-based VLAN on the Summit 200-24 switch
Marketing Finance
Sales
LC24004
For the members of the different IP VLANs to communicate, the traffic must be routed by the switch.
This means that each VLAN must be configured as a router interface with a unique IP address.
Spanning Switches with Port-Based VLANs
To create a port-based VLAN that spans two switches, you must do two things:
1 Assign the port on each switch to the VLAN.
2 Cable the two switches together using one port on each switch per VLAN.
Figure 11 illustrates a single VLAN that spans a BlackDiamond switch and a Summit 200-24 switch. All
ports on the BlackDiamond switch belong to VLAN Sales. Ports 1 through 24, and port 26 on the
Summit 200-24 switch also belong to VLAN Sales. The two switches are connected using slot 8, port 4
on system 1 (the BlackDiamond switch), and port 26 on system 2 (the Summit 200-24 switch).
86 Summit 200 Series Switch Installation and User Guide