Enterasys Networks 802.1Q - Manual (Page 62)

Example 1, Single Switch Operation
4-2 Examples
4.1.1 Solving the Problem
To set up this switch, users will be assigned to two new VLANs, red stations to the Red VLAN,
and blue stations to the Blue VLAN. The information below describes how the switch is
configured to create these two VLANs and how users are assigned to them.
1. First, the switch is set for 802.1Q operation. Since traffic isolation is to be based on VLAN
membership alone, the switch is set so the Red VLAN is a member of FID 2 and the Blue VLAN
is a member of FID 3 from the Device/VLAN Configuration screen.
2. The Administrator uses the Device/VLAN Configuration screen to define the two VLANs for
this switch; the Red VLAN, with a VLAN ID of 002, and the Blue VLAN, with a VLAN ID of
003.
3. The Administrator brings up the Port Assignment Configuration screen and assigns the ports to
the VLANs.
• Ports 1, 2, and 3: VLAN ID 002 (Red VLAN)
• Ports 4, 5, and 6: VLAN ID 003 (Blue VLAN)
4. Now that the ports have been assigned, the VLANs are enabled from the Device/VLAN
Configuration screen.
Figure 4-2 Switch Configured for VLANs
The switch will now classify each frame received as belonging to either the Red or Blue VLANs.
Traffic from one VLAN will not be forwarded to the members of the other VLAN, and all frames
transmitted by the switch will be normal, untagged Ethernet frames.
3 6
2
4
5
B2
B1
B3 R1
R2
R2
802.1Q Switch
VLAN ID 002
VLAN ID 003 VLAN ID 002
VLAN ID 003 VLAN ID 002
VLAN ID 003
1
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