From: Yasser Aly (blackyeyes00@hotmail.com)
Date: Thu Feb 26 2004 - 08:50:06 GMT-3
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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