I have a user port configured for voice and data as follows:
switchport access vlan 100
switchport voice vlan 101
However, the users phone doesn't seem to come up on vlan 101. The user's data vlan works fine but the phone doesn't. When I look at the mac address table for the interface I also only see a mac associated with the data vlan but not the voice vlan. Any ideas??
What type of phones ? Some phones do not recognize the concept of the voice vlan.
They come up on the data vlan, arp for an address from DHCP. DHCP supplies the address along with an option with some additional information such as TFTP server and QoS settings.
Once they obtain that information, they reboot again and run on the Vlan provided in the DHCP packet.
On this case, you would have to configure the switchport as trunk with native Vlan being the data Vlan.
sw en trunk dot1q
sw mo tr
sw tr native vlan 100
sw tr allo vla 100, 101