Voice VLAN and data traffic with and without trunking mode

From: Cristian Henry H (chenry@reuna.cl)
Date: Thu Jun 26 2003 - 14:47:54 GMT-3

Dear all,

If the requirement is to put the voice traffic (from IP Phone) in VLAN
101 and the data traffic (from behind IP Pone)in VLAN 102, what do you
think about the following cases/configurations?, Do both ones the same?

1) With 802.1q trunking mode configured
 
interface FastEthernet0/10
 switchport trunk encapsulation dot1q
 switchport trunk native vlan 102
 switchport mode trunk
 switchport voice vlan 101
 no ip address
 spanning-tree portfast
!

2) Without 802.1q trunking mode configured

interface FastEthernet0/10
 switchport access vlan 102
 switchport voice vlan 101
 spanning-tree portfast
!
In this 2) case, Does the port get automatically trunking mode 802.1q?,
is necesary to add " switchport trunk encapsulation dot1q"?, and if the
port is trunk, does the "switchport access vlan 102" works well?

Thanks in advance. 

-- 
Cristian E. Henry
REUNA

E-mail: chenry@reuna.cl
Fono: 56-2-3370336

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