VOICE VLAN FEATURES
• What is Voice VLAN?
The voice VLAN is where the QoS policies are applied in order to prioritize this traffic to send it through the LAN. The voice traffic it's always distinguished from the data traffic on the LAN.
• What is Voice VLAN for?
Voice VLAN is configured to carry voice traffic. Voice VLANs are mostly given transmission priority over other types of network traffic. Communication over the network is not complete without phone calls. More calls are made over the network than other forms of s message transmission. Sending emails and text messages are also forms of inter-relations but listening to a real voice provides legitimacy and assurance.
• Principal Voice VLAN Features
o The voice VLAN feature enables access ports to carry IP voice traffic from an IP phone.
o It is a common and recommended practice to separate voice and data traffic by using VLANs.
o provides a solid security boundary, preventing data applications from reaching the voice traffic
• Voice VLAN Settup
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How does the switchport voice vlan command work?
This command has dual functionality. It is used to indicate to a telephone connected to the Switch, which is the voice vlan by means of CDP. It works in conjunction with the switchport access vlan X command to assign the vlan for PC, if it is connected behind the phone.
o If you use the voice vlan command, is it a trunk?
This assignment is definitely a trunk, unless you use switchport voice vlan untagged.
• What is Management VLAN?
A management VLAN is any VLAN you configure to access the management capabilities of a switch. Your configured management VLAN is to be assign with an IP address and subnet mask. Any of a switch VLAN could be configured as the management VLAN if you has not configured or define a unique VLAN to serve as the management VLAN. In some cases, a network administrator proactively defines VLAN 1 as the management VLAN; this enables a loophole for an unauthorized connection to a switch.
• Voice VLAN vs Management VLAN
Voice VLANs are mostly given transmission priority over other types of network traffic and management VLAN is mostly over data
Any of a switch VLAN could be configured as the management VLAN but not is absolutely necesary configurated a Voice Vlan
For management Vlan you only need a switch and a pc but with a voice vlan you need a ip phone adicionality
Management VLAN control all vlans existing, it is managemment vlan control voice vlan
Management Vlan is created by software because it is a Dinamyc VLAN and for voice Vlan used protocols