From: Swaroop Potdar (swarooppotdar@hotmail.com)
Date: Wed Nov 03 2004 - 09:01:38 GMT-3
Hi Ahmed,
I would like to differ from your stand point.
when you see a config like
inf fx/x
switchport acces vlan x ( data vlan)
switchport voice vlan y
this means that a cisco phone has negotiated a do1q trunk with the switch
and the data packets are pushed to the port to be tagged as into the vlan x
color.
and the voice packets move into the voice vlan y color.
if not a cisco phone then i feel the config like below is also
implementable.
inf fx/x
switchport mode trunk
switchport trunk encap dot1q
switchport acces vlan x ( data vlan)
switchport voice vlan y
and if your switch only one vlan for all the ports for data which is the
native vlan then we dont have to tag the data packets coming from the phone
and simply state that this is the native vlan. then the config would look
like this....
inf fx/x
switchport mode trunk
switchport trunk encap dot1q
switchport trunk native vlan x ( data vlan)
switchport voice vlan y
pls correct me if wrong...
Swaroop
>From: "Ahmed Hassan" <ahmed_hassan@rayatelecom.net>
>Reply-To: "Ahmed Hassan" <ahmed_hassan@rayatelecom.net>
>To: "Brian McGahan" <bmcgahan@internetworkexpert.com>,
><ccielab@groupstudy.com>
>Subject: RE: voice Vlan
>Date: Wed, 3 Nov 2004 11:07:04 +0200
>
>Hi group,
>Thanks for your support, but as I understand the command
>Switch port access vlan 5
>Doesn't mean that the port must be in access mode. It means that the
>port will be in this vlan if it negotiated a trunk state and failed.
>So the port still can be in trunk mode.(is this Correct).
>I think also that the command
>Switchport trunk native vlan 12
>Doesn't Mean that the port must be in a trunk mode????
>It only indicates the native vlan if the port in a trunk mode.
>Best regards
>
>-----Original Message-----
>From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
>Edwards, Andrew M
>Sent: Tuesday, November 02, 2004 11:31 PM
>To: Edwards, Andrew M; Brian McGahan; ccielab@groupstudy.com
>Subject: RE: voice Vlan
>
>I stand corrected on my second config... The native vlan IS the voice
>vlan.
>
>And, as I thought about this a little bit more... And as is usually the
>case at that point...
>
>I realized that I don't have any hosts on the phone port. So, of course
>I don't notice any issues, everything is in the voice vlan.
>
>Andy
>
>-----Original Message-----
>From: Edwards, Andrew M
>Sent: Tuesday, November 02, 2004 8:50 AM
>To: 'Brian McGahan'; ccielab@groupstudy.com
>Subject: RE: voice Vlan
>
>
>Actually, its been my experience that you can set switch mode access.
>
>You just cant set it if you want to setup a dot1q trunk to the phone
>device.
>
>E.g. This works for cisco phones using CDP to enable the auxillary voice
>vlan
>
>Int f0/x
>Switch mode acc
>Switch acc vlan 10
>Switch voice vlan 20
>Mls qos trust cos
>
>
>Similarly, this will work for cisco or non-cisco phones
>
>Int f0/x
>Switch encapsulation dot1q <- enable trunk encapsulation
>Switch mode trunk <- static trunk mode
>Switch trunk native vlan 10 <- non-tagged traffic on trunk (voice or
>data port)
>Mls qos trust cos
>
>I've run it both ways and they both work... Currently I'm using option
>1.
>
>
>-----Original Message-----
>From: Brian McGahan [mailto:bmcgahan@internetworkexpert.com]
>Sent: Tuesday, November 02, 2004 8:29 AM
>To: reo@chavallos.net; ccielab@groupstudy.com
>Subject: RE: voice Vlan
>
>
> You cannot issue the "switchport mode access" command on the
>interface otherwise trunking negotiation cannot occur.
>
>Brian McGahan, CCIE #8593
>bmcgahan@internetworkexpert.com
>
>Internetwork Expert, Inc.
>http://www.InternetworkExpert.com
>Toll Free: 877-224-8987 x 705
>Outside US: 775-826-4344 x 705
>24/7 Support: http://forum.internetworkexpert.com
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>
>
> > -----Original Message-----
> > From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf
>Of
> > reo@chavallos.net
> > Sent: Tuesday, November 02, 2004 9:51 AM
> > To: ccielab@groupstudy.com
> > Subject: Re: voice Vlan
> >
> > Here's an example
> >
> > ---
> > interface GigabitEthernet1/2
> > no ip address
> > switchport
> > switchport access vlan 30
> > switchport mode access
> > switchport voice vlan 130
> > ---
> >
> > ----- Original Message -----
> > From: "Ahmed Hassan" <ahmed_hassan@rayatelecom.net>
> > To: <ccielab@groupstudy.com>
> > Sent: Tuesday, November 02, 2004 1:01 AM
> > Subject: voice Vlan
> >
> >
> > > HI,
> > > When we configure a port with the command
> > > Switchport voice Vlan 20
> > >
> > > How we configure the data VLAN on the same port
> > >
> > > Switchport access vlan 10
> > >
> > > Or
> > >
> > > Switchport native vlan 10
> > >
> > > Or Both
> > > Switchport access vlan 10
> > > Switchport native vlan 10
> > >
> > > Best Regards
> > > Ahmed Hassan
> > > Product Development Supervisor
> > > Raya Telecom
> > >
> > >
>_______________________________________________________________________
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> >
> >
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Regards,
Swaroop.
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