Alcatel OmniSwitch 6624 Network Configuration Manual page 112

Dynamically Assigning Ports to VLANs
In the initial VLAN port assignment configuration shown below,
All three ports have workstations that are configured to send packets with an 802.1Q VLAN ID tag for
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three different VLANs (VLAN 2, 3, and 4).
Mobility is enabled on each of the workstation ports.
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VLAN 1 is the configured default VLAN for each port.
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VLANs 2, 3, and 4 are configured on the switch, each one has VLAN mobile tagging enabled.
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VLAN 1
Default VLAN
Port 1
VLAN ID Tag = 2
As soon as the workstations start sending traffic, switch software checks the 802.1Q VLAN ID tag of the
frames and looks for a VLAN that has the same ID and also has mobile tagging enabled. Since the work-
stations are sending tagged packets destined for the mobile tag enabled VLANs, each port is assigned to
the appropriate VLAN without user intervention. As the diagram on
Port 1 is assigned to VLAN 2, because the workstation is transmitting tagged packets destined for
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VLAN 2.
Port 2 is assigned to VLAN 3 because the workstation is transmitting tagged packets destined for
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VLAN 3.
Port 3 is assigned to VLAN 4 because the workstation is transmitting tagged packets destined for
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VLAN 4.
All three ports, however, retain their default VLAN 1 assignment, but now have an additional VLAN
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port assignment that carries the matching traffic on the appropriate rule VLAN.
page 6-6
VLAN 2
Mobile Tag Enabled
Mobile Tag Enabled
Port 2
VLAN ID Tag = 3
VLAN Mobile Tag Classification: Initial Configuration
OmniSwitch 6624/6648 Network Configuration Guide
Mobile Tag Enabled
VLAN 3
Port 3
VLAN ID Tag = 4
page 6-7
Assigning Ports to VLANs
OmniSwitch
OmniSwitch 6648
OmniSwitch 6648
OmniSwitch 6648
OmniSwitch 6648
VLAN 4
shows,
April 2004