VLAN Management
Voice VLAN
Cisco 500 Series Stackable Managed Switch Administration Guide Release 1.3 228
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• VLAN ID—Attaches the interface to a user-defined VLAN ID.
STEP 4 Click Apply. The protocol ports are mapped to VLANs, and written to the Running
Configuration file.
Voice VLAN
In a LAN, voice devices, such as IP phones, VoIP endpoints, and voice systems are
placed into the same VLAN. This VLAN is referred as the voice VLAN. If the
voice devices are in different voice VLANs, IP (Layer 3) routers are needed to
provide communication.
This section covers the following topics:
• Voice VLAN Overview
• Configuring Voice VLAN
Voice VLAN Overview
This section covers the following topics:
• Dynamic Voice VLAN Modes
• Auto Voice VLAN, Auto Smartports, CDP, and LLDP
• Voice VLAN QoS
• Voice VLAN Constraints
• Voice VLAN Workflows
The following are typical voice deployment scenarios with appropriate
configurations:
• UC3xx/UC5xx hosted: All Cisco phones and VoIP endpoints support this
deployment model. For this model, the UC3xx/UC5xx, Cisco phones and
VoIP endpoints reside in the same voice VLAN. The voice VLAN of UC3xx/
UC5xx defaults to VLAN 100.
• Third-party IP PBX-hosted: Cisco SBTG CP-79xx, SPA5xx phones and
SPA8800 endpoints support this deployment model. In this model, the
VLAN used by the phones is determined by the network configuration.
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