[Asterisk-Users] OT - Cisco IP Phone and PC in diferent VLANs (with 802.1x)

[Greg Oliver]

It actually depends on the switch model.  Some put the port into
trunking mode automatically with the sw voi command, and some do not.

Hopefully one day Cisco will finally make their own products and become
uniform instead of buying several companies and glue'ing them all
together to get an ethernet switch that works.  At least they got the
routers right :)

On Thu, 2006-03-02 at 08:13 -0800, Gary Richardson wrote:
> You don't need switchport mode trunk when using switchport voice
> vlan.. 
> 
> On 3/1/06, Nicholas Kathmann
> <nicholas.kathmann at kathmannconsulting.com> wrote:
>         Joao Pereira wrote:
>         > Hello to all 
>         > I would like to know If some of you have already configured
>         an Cisco
>         > IP Phone (7940 or 7960) to work in a different VLAN than the
>         PC that
>         > is connected through the phone switch?
>         > I know that this can be done with the Skinny firmware, but I
>         dont if 
>         > it works with the SIP firmware.
>         >
>         > The Cisco technical staff told me that these phones dont
>         support
>         > 802.1x but can work as pass-through. This way I can still
>         use the PCs
>         > with 802.1x and the phones in the same Ethernet plug. 
>         >
>         > Did someone made it with the Cisco IP phones? What
>         configuration do I
>         > need in the phones and in the switch?
>         > Thanks
>         > Joao Pereira
>         >
>         If configuring with Cisco switches, I'm pretty sure they pull
>         the 
>         information for which VLAN to operate in from the switch.  You
>         have to
>         configure the switchports on the Cisco switch like so:
>         
>         interface fastethernet 0/1
>            switchport trunk native vlan <your data vlan> 
>            switchport mode trunk
>            switchport voice vlan <your voice vlan>
>            spanning-tree portfast trunk
>         
>         etc.
>         
>         Thanks,
>         Nicholas Kathmann, CISSP
>         Kathmann Consulting, LLC
>         
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