[Asterisk-Users] OT - Cisco IP Phone and PC in different VLANs(with802.1x)

[Wojciech Tryc]

Switch is only tagging the vlan packets. Once the PC loads the vlan
aware driver ("client") it will be able to read tagged packet for the
vlan which PC has been configured to use. Nothing to be done on the
switch. 
W

-----Original Message-----
From: Joao Pereira [mailto:joao.pereira at fccn.pt] 
Sent: Thursday, March 02, 2006 1:15 PM
To: Wojciech Tryc; asterisk-users at lists.digium.com
Subject: Re: [Asterisk-Users] OT - Cisco IP Phone and PC in diferent
VLANs(with802.1x)

Ok, but the PC has an 802.1x client that configures the VLAN when he 
authenticates.
Is this going to pass through the phone?
And will the switch accept it?
Thanks
Joao Pereira


Wojciech Tryc wrote:

> Your pc has to able to support tagged vlans. The switch on the phone 
> will pass through both tagged and untagged vlans.
> W
> ----- Original Message ----- From: "Joao Pereira"
<joao.pereira at fccn.pt>
> To: "Asterisk Users Mailing List - Non-Commercial Discussion" 
> <asterisk-users at lists.digium.com>
> Sent: Thursday, March 02, 2006 11:51 AM
> Subject: Re: [Asterisk-Users] OT - Cisco IP Phone and PC in diferent 
> VLANs(with 802.1x)
>
>
>> And about the 802.1x ?
>> The phones can work as passthrough and force the PC to use 802.1x ?
>> What configuration do we put in the switches? Do we put the switch as

>> "access" (with 802.1x) or "trunk" (without 802.1x) ?
>>
>> Thanks
>> Joao Pereira
>>
>>
>>
>> Greg Oliver wrote:
>>
>>> 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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>>>
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