From: Anthony Sequeira (asequeira@internetworkexpert.com)
Date: Sat Jan 10 2009 - 13:36:53 ARST
This is an area where I believe we tend to think too much. I can
remember being freaked out about the Default VLANs in a question like
this and what to do about them. The proctor at RTP let me know at the
time that I was just worrying too darn much.
If I am asked to make the switch the root for the odd numbered VLANs -
I include ALL odd numbered VLANs (except the default VLANs) and I move
on. I suppose it would be a bit trickier if it was specified to do
this for all VLANs used in your particular Lab paper. Now I am
implementing the command just for the VLANs we use and I am being sure
to catch any that might be created outside of the Switching section.
Anthony J. Sequeira, CCIE #15626, CCSI #23251
Senior CCIE Instructor
asequeira@internetworkexpert.com
Internetwork Expert, Inc.
http://www.InternetworkExpert.com
Toll Free: 877-224-8987
Outside US: 775-826-4344
On Jan 10, 2009, at 5:31 AM, CCIE To Be wrote:
> Dear Group,
>
> If I have a requirement to make one switch e.g SwitchA 'root' for
> odd vlans
> and other switch SwitchB 'root' for even switch. My question is
> that, do I
> need to INCLUDE VLAN 1 in the odd vlan list while making a switch
> primary
> for odd vlans ??
>
> If we talk about 'allowed vlan' on trunk then it is clear that we
> don't need
> to INCLUDE VLAN 1 in allowed vlan list because its a system vlan and
> STP,
> VTP etc traffic will be passed across the trunks even VLAN 1 is not
> implicitly included in allowed vlan list. What about above scenario ?
>
>
> Thanks
>
>
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