From: Jongsoo.Kim@Intelsat.com
Date: Mon Mar 21 2005 - 21:03:05 GMT-3
Thanks for a good explanation Matt
I remember I used to struggle a lot on this.
I never thought about dynamic mode...
One question though " switchport priority trust cos" on Method1 is
necessary?
First, I can't find this command from CCO. I only see "switchport priority
extend ..."
But as far as I know, this command("switchport priority extend ...") advise
VoIP Phone on how to tag data traffic, which can also be used in method 2. I
am just trying be 100% sure as my lab date is coming soon ( 5 April)
Regards
Jongsoo
-----Original Message-----
From: Matt White [mailto:mwhite23@gmail.com]
Sent: Saturday, 19 March, 2005 11:16 PM
To: mani poopal
Cc: ccielab@groupstudy.com
Subject: Re: configurin VOICE VLAN.
For the 3550 and up, #1 is correct. #2 only needs to be used if you
have a 3500XL or below.
Keep in mind the switchport is dynamic by default, and will trunk
automatically, regardless of the voice VLAN.
Officially, #2 is wrong, as hardcoded trunks are not technically
supported on an interface. However you see it implemented fairly often
this way.
On Mar 19, 2005, at 10:54 PM, mani poopal wrote:
> Guys,
>
> If the question ask to configure voice vlan 200 and data vlan of 20,
> which method is wright. Any suggesions are appreciated.
>
> Method1:(DOC CD and IWEB method)
> mls qos
> int fa 0/10
> mls qos trust cos
> switchport access vlan 20
> switchport voice vlan 200
> switchport priority trust cos
>
> Method2:(CISCO PRESS CCIE LAB EXAM book method)
> mls qos
> int fa 0/10
> mls qos trust cos
> switchport access-vlan 20
> switchport voice-vlan 200
> switchport trunk encapsulation dot1q
> switchport moe trunk
> switchport native vlan 20
>
> So the question, if the voice vlan is asked to configure, which method
> is right.
>
> thanks in advance for the replies and reasoning.
>
> Mani
>
>
>
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