A voice VLAN port is a special access port associated with two VLAN identifiers:
â¢Voice VLAN ID (VVID) to carry voice traffic to and from the IP phone. The VVID is used to configure the IP phone connected to the port.
â¢Port VLAN ID (PVID) to carry the data traffic to and from the workstation connected to the switch through the IP phone. The PVID is the native VLAN of the port.
Each port that you configure for a voice VLAN is associated with a VVID and a PVID. This configuration allows voice traffic and data traffic to be separated onto different VLANs.
A voice VLAN port becomes active when there is a link whether or not the port is AUTHORIZED or UNAUTHORIZED. All traffic coming through the voice VLAN is learned correctly and appears in the MAC-address-table. Cisco IP phones do not relay CDP messages from other devices. As a result, if several Cisco IP phones are connected in series, the switch recognizes only the one directly connected to it. When 802.1X is enabled on a voice VLAN port, the switch drops packets from unrecognized Cisco IP phones more than one hop away.
When 802.1X is enabled on a port, you cannot configure a PVID that is equal to a VVID. For more information about voice VLANs, see Chapter 31, "Configuring Voice Interfaces."
In your case the data vlan is vlan 1, so check if you have DHCP services in vlan 1.
Note2: verify if the phone is able to register with CallManager.
I've seen phones stucked that were not allowing PC traffic through if not able to register on in the middle of firmware upgrade.
Verify if the PC port is enabled on the phone there is a chance that someone has disabled the PC port.
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