Voice vlan setup

It will look like this:. Behind the scenes, we have a trunk between our switch and IP phone. The port on the IP phone that connects to the computer is an access port. The IP phone will forward all traffic from the computer to the switch untagged , traffic from the IP phone itself will be tagged. We configure the interface in access mode and use VLAN for the computer.

We can also take a look at the trunk status. Although this will show us that the interface is not-trunking, it does tell us the two VLANs that are used:. Above we see that VLAN and are allowed on this interface. Although it shows up as non-trunking, keep in mind that in reality, this is a trunk. Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type.

Showing results for. Show only Search instead for. Did you mean:. Voice Vlan conf. I am trying to set up lldp and voice vlan on a poe switch. All forum topics Previous Topic Next Topic.

Use the priority-queue out command in order to give voice packets head-of-line privileges when trying to exit port preventing jitter. The spanning tree portfast command removes the interface from the spanning tree protocol, and the bpduguard command protects the network should someone try to connect a new switch to it after unplugging the IP phone.

If a switch were to be plugged in, the port would go to err-disable. These are typically added to phone ports. If you are using a non-Cisco IP phone that does not recognize the Cisco proprietary CDP and automatically sets up the trunk port, you will have to configure the trunk manually.

This example uses this configuration:. Use the OIT to view an analysis of show command output. Use the show interfaces interface-id switchport command in order to verify your voice VLAN configuration.

Use the show running-config interface interface-id command in order to verify your voice VLAN entries for a particular interface. Contents Introduction. Switch config-if mls qos trust cos! To increase the priority of the voice data streams, you must first identify them.

In the MAC address-based mode, a network switch can determine whether the data stream is a voice data stream according to a source MAC address field in a data packet that enters its interface. As shown in the picture below, after receiving the packet sent by the PC and the IP phone, the switch performs the following processing: If the source MAC address matches the OUI Organizationally Unique Identifier configured on the switch, the tag of the voice VLAN is added to the packet, and the packet priority is increased.

As shown in the following picture, the IP phone firstly sends packets to a network switch.