26 Switching Configuration
• The MAC-based VLAN feature let packets originating from end stations become part of a VLAN
according to source MAC address. To configure the feature, you specify a source MAC address and a
VLAN ID.
The Private Edge VLAN feature lets you set protection between ports located on the switch. This means
that a protected port cannot forward traffic to another protected port on the same switch.
The feature does not provide protection between ports located on different switches.
For information about authenticated, unauthenticated, and guest VLANs, see "802.1X Authentication
and VLANs" on page 88.
VLAN Configuration Example
The diagram in this section shows a switch with four ports configured to handle the traffic for two
VLANs. Port 1/g2 handles traffic for both VLANs, while port 1/g1 is a member of VLAN 2 only, and ports
1/g3 and 1/g4 are members of VLAN 3 only. The script following the diagram shows the commands you
would use to configure the switch as shown in the diagram.
Figure 3-1. VLAN Example Network Diagram
CLI Examples
The following examples show how to create VLANs, assign ports to the VLANs, and assign a VLAN as the
default VLAN to a port.
Port 1/0/1
VLAN 2
Port 1/0/2
VLANs 2 & 3
Port 1/0/3
VLAN 3
Port 1/0/4
VLAN 3
Layer 3 Switch
VLAN 2
VLAN 3
Port 1/g1
VLAN 2
Port 1/g4
VLAN 3
Port 1/g3
VLAN 3
Port 1/g2
VLANs 2 & 3
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