[cisco-voip] 7960 PC port

[Jonathan Charles]

Wow.

This is kind of surprising that so many voip engineers are making this mistake.

The voice vlan is NOT supported (and does not work correctly) on ports
configured as trunks.

For the 3560:
http://www.cisco.com/univercd/cc/td/doc/product/lan/cat3560/12225see/scg/swvoip.htm
"Voice VLAN is only supported on access ports and not on trunk ports,
even though the configuration is allowed."

For the 3750:
http://www.cisco.com/univercd/cc/td/doc/product/lan/cat3750/12225see/scg/swvoip.htm
"Voice VLAN is only supported on access ports and not on trunk ports,
even though the configuration is allowed."

While you may have gotten it to work, it is not consistent...



Jonathan

On 3/31/06, Rupp Christian <Christian.Rupp at etavis.ch> wrote:
> Hi Peter!
>
> We use this configuration that works:
>
> interface FastEthernet0/3
>  switchport trunk encapsulation dot1q
>  switchport trunk native vlan yy
>  switchport voice vlan xx
> !
>
> Is the DHCP Server for the voice vlan the same like the PC vlan?
> Maybe you have to configure a helper-address?
>
> Regards,
> Christian
>
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