question in voice vlan between switch and iphone

[Dr.X]

hi ,

assume i have pc connected to ip phone connected to MLS

pc------------iphone-------------MLS

assume i configured on the MLS :

switchport trunk native vlan 99

swticport access vlan 10

swtchoport voice vlan 110

as we see above , i ve configured the voice vlan ,and te trunk special case should be negotaied between the iphone and theswitch .

my question  is ,

how the data from the pc will transfered ,

will it pas the native vlan 99 , or it will pass the switch ass vlan 110 ??

regards

[Dr.X]

also , wts the different of using untagged ,  none  options in the command

swtchoport voice vlan

??

[danielciscoswart]

I dont see how you can setup a trunk port and then have your data with voice on separted vlans.

What i suggest you do is remove "switchport trunk native vlan 99"

Then just use switchport access vlan 10 "data" (this will be for all your untagged packets and then switchport voice vlan 110 for your voice tagged packets.

From a cisco perspective tagged and untagged are native vlan/ or a set vlan . Its basicly related to an added DOT1Q header relating to the vlans. If a packet doesnt have that header  its an untagged packet ( native vlan or normal access vlan)

HTH

Regards

Daniel

[davy.timmermans]

A good practice is to configure the port as

Access port - switchport mode access
With data and voice vlan


The native vlan commands will be there but not applied as the port is in access mode and the native vlan is for when the port is operating in trunking mode.


Thus you can omit this command.


The voice vlan tagged packets and data untagged are to be seen as a special mode of operation of access mode.


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