From: Chan Hong (chan_hong33@yahoo.com)
Date: Thu Dec 13 2007 - 01:08:09 ART
Dear Nathan,
I tried the root primary command in my lab switch and it adjusts
the priority when I enter the command. but when I change another switch
priority with lower priority(but not 0), the root will be changed. It seems
that the switch with spanning-tree vlan x root primary didn't react
dynamically.
Regards,
Howard
----- 6l%s-l%s ----
1H%s$H!R Cielieska Nathan
<ncielieska@gmail.com>
&,%s$H Felix Nkansah <felixnkansah@gmail.com>
0F%;(CC)
groupstudy <ccielab@groupstudy.com>
6G0e$i4A!R 2007 &~ 12$k 13 $i ,P4A%| $W$H
3:22:56
%DCD!G Re: Permanent Spanning-tree Root Switch Question
Felix
Do a
spanning-tree vlan 20,30,40 root primary.
The reason i would do that is
because there are other calculations
besides priority that can come into
play. Setting the root command
will allow the switch to react dynamically to
spanning-tree elections
by tuning things in its favor to become root.
Regards,
Nate
On Dec 12, 2007, at 12:07 PM, Felix Nkansah wrote:
> Hi,
>
> I
am considering a spanning-tree task (dont have the answers tho).
>
> *It
requires that, of the four switches in the network, SW1 be set
> as the
>
root for VLANs 20, 30, 40.*
> **
> *SW1 should be set such that it would
remain the root if even other
> switches
> are added to the network in
future.*
>
> Would setting a command like *'spanning-tree vlan 20,30,40
priority
> 0'* be a
> good solution?
>
> I'm afraid the *'spanning-tree vlan
20,30,40 root primary'* command
> may not
> be able to cater for the 'future
switches' caveat.
>
> Let me have your expert opinions, please.
>
> Regards,
>
> Felix
>
>
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