Types of VLANs
ExtremeWare XOS 11.3 Concepts Guide
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At boot-up, all ports are members of the port-based VLAN default. Before you can add any port to
another port-based VLAN, you must remove it from the default VLAN, unless the new VLAN uses a
protocol other than the default protocol any. A port can be a member of only one port-based VLAN.
On the Extreme Networks switch in Figure 5, ports 9 through 14 are part of VLAN Marketing; ports 25
through 29 are part of VLAN Sales; and ports 21 through 24 and 30 through 32 are in VLAN Finance.
Figure 5: Example of a port-based VLAN on an Extreme Networks switch
For the members of different IP VLANs to communicate, the traffic must be routed by the switch, even
if the VLANs are physically part of the same I/O module. This means that each VLAN must be
configured as a router interface with a unique IP address.
NOTE
On the BlackDiamond 10K switch, the 10 Gbps module must have the serial number 804405-00-09 or higher to
support untagged frames. If your configuration has untagged frames, but the wrong 10 Gbps module, the system
fails that slot; to use the earlier revision of the 10 Gbps module, you must remove the untagged ports from the
VLAN and reset the module. To display the serial number of the module, issue the show slot <slot_number>
command.
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 6 illustrates a single VLAN that spans a BlackDiamond switch and another Extreme Networks
switch. All ports on the system 1 switch belong to VLAN Sales. Ports 1 through 29 on the system 2
switch also belong to VLAN Sales. The two switches are connected using slot 8, port 4 on system 1 (the
BlackDiamond switch), and port 29 on system 2 (the other switch).
EX_060
Sales
Marketing
Finance
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