From: Lillemor Hamnqvist (lillemor@hamnqvist.org)
Date: Mon Feb 03 2003 - 14:03:05 GMT-3
Hi Larry,
I'm working with a configuration of IP phones connected to a CAT 4004, that
is connected to a 3660.
What do I have to do with the switch to get it working. Right now the IP
phones DHCP request does not make it to the router. Do you have any examples
with CatOS ( I have seen examples with 3550).
Thank you,
/lillemor
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
Larry Letterman
Sent: Friday, January 24, 2003 3:57 AM
To: Donny MATEO
Cc: ccielab@groupstudy.com
Subject: Re: Voice Vlan
Portfast enables the layer 2 port to go into forwarding
instantly...these are edge ports..
you have to remember that on IOS switches, trunking 10/100
ports means carrying both
vlans of data, just like assigning the ports in a cat 6500
to the aux port...it is still an edge port
that links to a pc or phone..so in my config all the ports
on the switch are trunks and edge or access
ports.
Larry Letterman
Network Engineer
Cisco Systems
----- Original Message -----
From: "Donny MATEO" <donny.mateo@sg.ca-indosuez.com>
To: "Larry Letterman" <lletterm@cisco.com>
Cc: <ccielab@groupstudy.com>
Sent: Friday, January 24, 2003 12:43 AM
Subject: Re: Voice Vlan
>
> Hi Larry,
>
> one more question before I'm done.
> The spanning-tree portfast is enabled on your
configuration. Is that ok ? I thought spanning tree
> portfast can only be enabled on edge port => port
connected to one device. In the case of IP phone
> the port could have 2 devices connected to it, namely the
ip phone MAC address and the pc mac
> -address.
> Wouldn't this contradict with the requirement of
spanning-tree portfast ?
>
> Donny
>
>
>
> "Larry Letterman"
> <lletterm@cisco.c To:
"Donny MATEO" <donny.mateo@sg.ca-indosuez.com>
> om> cc:
<ccielab@groupstudy.com>
> Subject:
Re: Voice Vlan
> 24-01-2003 16:13
>
>
>
>
>
>
> you dont have to make any changes to the phone..or the
pc..
> the port on the switch has to be a trunk in order for the
> port to carry both the data and voice vlan..
> The native vlan command tells the port that the vlan for
> data is the native one, the voice vlan tells
> the port that the voice traffic is on that one...same
thing
> the aux vlan in a 6500 does..
>
> Larry Letterman
> Network Engineer
> Cisco Systems
>
>
> ----- Original Message -----
> From: "Donny MATEO" <donny.mateo@sg.ca-indosuez.com>
> To: "Larry Letterman" <lletterm@cisco.com>
> Cc: <ccielab@groupstudy.com>
> Sent: Friday, January 24, 2003 12:02 AM
> Subject: Re: Voice Vlan
>
>
> >
> > I'm new to this cat 3550 stuff. But when I read the
> documentation guide on 3550 there was never
> > mentioned anything about configuring a trunk to talk
with
> the IP phone. Is this mandatory for it to
> > work ? Do you have to configure the ip phone port that
> connect to the switch to use trunking as well
> > ?
> > Or perhaps trunking tag is used by the ip phone to
> differentiate traffic generated by itself and the
> > one of an attached. device.
> >
> > Sorry if this is obvious, but I have no IP phone at
hand,
> so i'm a bit curious here.
> > Donny
> >
> >
> >
> > "Larry Letterman"
> > <lletterm@cisco.c To:
> "Khalid Siddiq" <khalid@sys.net.pk>, "Mike Schlenger"
> > om>
> <mschlenger@meridianitsolutions.com>
> > Sent by: cc:
> <ccielab@groupstudy.com>
> > nobody@groupstudy Subject:
> Re: Voice Vlan
> > .com
> >
> >
> > 24-01-2003 15:02
> > Please respond to
> > "Larry Letterman"
> >
> >
> >
> >
> >
> >
> > This is the config for my 3524xl switches for voice and
> > data....
> >
> > interface FastEthernet0/1
> > switchport trunk encapsulation dot1q
> > switchport trunk native vlan 152
> > switchport trunk allowed vlan 1,152,155,1002-1005
> > switchport mode trunk
> > switchport voice vlan 155
> > switchport priority extend cos 0
> > spanning-tree portfast
> > !
> >
> > Larry Letterman
> > Network Engineer
> > Cisco Systems
> >
> >
> > ----- Original Message -----
> > From: "Khalid Siddiq" <khalid@sys.net.pk>
> > To: "Mike Schlenger"
<mschlenger@meridianitsolutions.com>
> > Cc: <ccielab@groupstudy.com>
> > Sent: Thursday, January 23, 2003 10:04 PM
> > Subject: RE: Voice Vlan
> >
> >
> > > Mike,
> > > Question 1:
> > >
> > > Can u confirm that the below configuration for data
and
> > voice is
> > > correct?
> > > As I read that for data the voice access port is in
> normal
> > access vlan
> > > not a TRUNK?
> > > Is I have to configure trunk for the pc connected to
the
> > ip phone?
> > > Can u give me any url to clear my concept.
> > >
> > > Question 2:
> > >
> > > Also If I want to change the cos volue of incoming
voice
> > traffic ,can I
> > > used the service polivy map on the layer 2 interface
and
> > match the
> > > incoming traffic on extended ip access-list.
> > >
> > > int fa0/10
> > > switport trunk encapsulation dot1q
> > > switport mode trunk
> > > switport trunk native vlan 5 <===============
> > > swithport voice vlan 10
> > >
> > > thanks
> > > khalid
> > >
> > >
> > > -----Original Message-----
> > > From: Mike Schlenger
> > [mailto:mschlenger@meridianitsolutions.com]
> > > Sent: Friday, January 24, 2003 3:17 AM
> > > To: 'Jung, Jin'; 'Kurt Claes'; K Sarangan; Bobby;
> > ccielab@groupstudy.com
> > > Subject: RE: Voice Vlan
> > >
> > > That's a pretty crazy statement. I have hundreds of
> > switches configured
> > > with
> > > same data/voice vlan. Do you have any documentation
> > supporting this
> > > statement?
> > >
> > > Mike
> > >
> > > Michael Schlenger
> > > CCIE #7079
> > > Meridian IT Solutions
> > > mschlenger@meridianitsolutions.com
> > >
> > > -----Original Message-----
> > > From: Jung, Jin [mailto:jin.jung@lmco.com]
> > > Sent: Thursday, January 23, 2003 3:15 PM
> > > To: 'Kurt Claes'; K Sarangan; Bobby;
> > ccielab@groupstudy.com
> > > Subject: RE: Voice Vlan
> > >
> > >
> > > On the subject of Voice VLAN and Data VLAN,
> > > In the design stage,
> > > I have heard that I can not use data/voice VLAN on
more
> > then one switch.
> > > Data/voice VLAN need to stay on only and only one
> switch.
> > >
> > > So if I have data VLAN 5 that go across 5 switches,
Now
> I
> > have create 5
> > > different data VLANs in every switch????
> > > --- Does not make sense..
> > >
> > > I can understand if this rule "best practice" only
> applies
> > to Voice
> > > VLAN,
> > > But does this also applies to Data VLAN as well.
> > >
> > > Can someone comment on this?
> > >
> > > Thanks
> > >
> > > -----Original Message-----
> > > From: Kurt Claes [mailto:Kurt.Claes@inseurop.com]
> > > Sent: Thursday, January 23, 2003 11:44 AM
> > > To: K Sarangan; Bobby; ccielab@groupstudy.com
> > > Subject: RE: Voice Vlan
> > >
> > >
> > > Hi,
> > >
> > > Your answer is right. In order to allow data on VLAN
5,
> > and Voice on
> > > VLAN10,
> > > this is the way to do it. Just connect your PC behind
> the
> > phone, and
> > > your PC
> > > will be in VLAN 5.
> > >
> > > If you do not use this "native VLAN" command the PC
will
> > arrive in the
> > > default native vlan, which is 1
> > >
> > > Because the port on the switch is a trunk, you don't
> have
> > to issue the
> > > command swithport access vlan 5
> > >
> > >
> > >
> > > Regards,
> > >
> > > Kurt
> > >
> > >
> > > -----Oorspronkelijk bericht-----
> > > Van: K Sarangan [mailto:K.Sarangan@cwgoindia.com]
> > > Verzonden: do 23/01/2003 16:49
> > > Aan: Bobby; ccielab@groupstudy.com
> > > CC:
> > > Onderwerp: RE: Voice Vlan
> > >
> > >
> > >
> > > Hi Bobby,
> > >
> > > If you have to increase/change the cos value coming
for
> > the
> > > incoming
> > > voice traffic, then you
> > > will have to use
> > >
> > > mls qos cos "cos"
> > > mls qos cos override
> > >
> > > If you have to trust this value, then give mls qos
trust
> > cos.
> > >
> > > If you have to override/trust the cos from the PC,
then
> > use
> > > Switchport Priority extend cos/trust
> > >
> > > One small question here:-
> > >
> > > You configure a voice vlan by:
> > >
> > > int fa0/10
> > > switport trunk encapsulation dot1q
> > > switport mode trunk
> > > switport trunk native vlan 5 <===============
> > > swithport voice vlan 10
> > >
> > > Now, my question is if the requirement is for data to
> take
> > vlan
> > > 5,
> > > then is the above config
> > > right or do I have to give "swithport access vlan 5
> > instead of
> > > native vlan?.
> > >
> > > TIA
> > >
> > > Sarangan
> > >
> > > -----Original Message-----
> > > From: Bobby [mailto:bobby1@ctimail3.com]
> > > Sent: Tuesday, January 14, 2003 10:31 AM
> > > To: ccielab@groupstudy.com
> > > Subject: Voice Vlan
> > >
> > >
> > > Hi Friends
> > >
> > > If I want to increase the COS value for the incoming
> voice
> > > traffic then I will use
> > >
> > > #Switchport Priority extend cos 0 to 7 command
> > >
> > > Now my question is do I have to type in the following
> > command
> > > also :
> > >
> > > #mls qos trust cos
> > >
> > > Thanks
> > > .
> > > .
> > > DISCLAIMER:
> > > This communication contains information which is
> > confidential and may
> > > also
> > > be privileged. It is for the exclusive use of the
> intended
> > recipient(s).
> > > If
> > > you are not the intended recipient(s), please note
that
> > any
> > > distribution,
> > > copying or use of this communication or the
information
> in
> > it is
> > > strictly
> > > prohibited. If you have received this communication in
> > error, please
> > > notify
> > > the sender immediately and then destroy any copies of
> it.
> > .
> > > .
> > > .
> > > .
> > >
> >
>
This archive was generated by hypermail 2.1.4 : Sat Mar 01 2003 - 11:06:01 GMT-3