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Static Virtual LANs (VLANs)
Effect of VLANs on Other Switch Features
Components of Voice VLAN Operation
■Voice VLAN(s): Configure one or more voice VLANs on the switch. Some reasons for having multiple voice VLANs include:
•Employing telephones with different VLAN requirements
•Better control of bandwidth usage
•Segregating telephone groups used for different, exclusive purposes
Where multiple voice VLANs exist on the switch, you can use routing to communicate between telephones on different voice VLANs. .
■Tagged/Untagged VLAN Membership: If the appliances using a voice VLAN transmit tagged VLAN packets, then configure the member ports as tagged members of the VLAN. Otherwise, configure the ports as untagged members.
Voice VLAN Access Security
You can use port security configured on an individual port or group of ports in a voice VLAN. That is, you can allow or deny access to a phone having a particular MAC address. Refer to chapter titled “Configuring and Monitoring Port Security” in the Access Security Guide for your switch.
MAC authentication is not recommended in voice VLAN applications.
Effect of VLANs on Other Switch Features
Spanning Tree Operation with VLANs
Depending on the