From: Yasser Aly (blackyeyes00@hotmail.com)
Date: Thu Feb 26 2004 - 11:42:46 GMT-3
Tyson,
Maybe away from the original question but do you know when it is
preferrable to tag or untag the native VLAN traffic ?
Consider this as a design question rather than a lab question.
Regards,
Yasser
>From: "Scott, Tyson C" <tyson.scott@hp.com>
>Date: Thu, 26 Feb 2004 07:40:16 -0600
>
>By default Native VLAN 1 with 802.1q trunking is not tagged but you can
>tag it issuing the command vlan dot1q tag native in global configuration
>mode. But the question below his question is no you do not want to
>prune vlan 1 because the question is stating make sure VLAN 1 is not
>tagged which is asking you to use dot1q trunking. If you pruned it you
>would not have an untagged VLAN running across the etherchannel so you
>would be effectively not fulfilling the requirements of the question.
>
>Regards,
>
>Tyson Scott
>Agilent Problem Management Team
>Managed Network Services
>Phone: 313-583-5812
>Pager: 877-997-0811
>
>-----Original Message-----
>From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
>Yasser Aly
>Sent: Thursday, February 26, 2004 6:50 AM
>To: jmatus@pacbell.net; ccielab@groupstudy.com
>Subject: RE: cat3550 vlan question: ipexpert manual
>
>Hello,
>
>dot1q encapsulation on a trunk will tag all the VLANs except the native
>vlan.
>
>By default native vlan is vlan 1.
>If asked to make vlan 10 untagged in this scenario, it simply means to
>change the native vlan using the following command: " switchport trunk
>native vlan 10 "
>
>If asked to tag all vlans - including the native vlan - then it means to
>use
>isl encapsulation method.
>
>HTH,
>Yasser
>
>
> >From: jmatus@pacbell.net
> >Reply-To: jmatus@pacbell.net
> >Date: Thu, 26 Feb 2004 02:07:15 -0500
> >
> >hi there,
> >there is a task that comes up repeatedly in this manual for the
> >catalyst3550's. the task states:
> >
> >configure layer 2 etherchannel group on fa0/23 and 0/24 of both
>switches.
> >use ieee standard trunking rotocol and make sure ONLY VLAN 1 can carry
>non
> >tagged frames.
> >
> >i can confugre the etherchannel just fine and use dot1q for the
>protocol,
> >but i have no idea what "make sure ONLY vlan 1 can carry non tagged
> >frames" means. the channel group is a trunk so i would think expect it
>to
> >carry tagged frames....so would this mean to remove/prune vlan 1 from
>this
> >trunk? or is it something different?
> >
> >thanks in advance for you help!
> >john d. matus
> >
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