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Re: Spanning-tree port priority versus port-cost posted 09/16/2007
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Correct me if I'm wrong, but I don't believe port priority is used to
affect the local switch, it is used for influencing the downstream
switche's path selection.

In this simple case:

SW1
  | |
SW2

If SW1 is the root you use configure port priority on SW1 to influence
which port will be SW2's root port and which port will be blocking. If
the configuration states you must do the configuration on SW2, then
configure cost on SW2.

Also port priority is only useful when you have multiple connections
between two switches.

HTH

On 9/16/07, Keith Bizzell <mkbcoolman@xxxxxxxxx> wrote:
> It depends on the direction.  Port cost will affect spanning tree
> down-stream, but port-priority will affect the local switch.  And yes,
> wording has everything to do with it.  For instance, 'Configre S1 so that it
> prefers fa0/23 for all vlan 10 traffic' would point you to port priority.
> 'Configure S2 so that S1 prefers fa0/23 for all vlan 10 traffic' would
> require cost.  Subtle...so be careful.
>
>
>
> On 9/16/07, slevin kremera <slevin.kremera@xxxxxxxxx> wrote:
> >
> > Hi experts
> >
> > when does one use port-priority and port-cost.wud that depend on how the
> > question is worded in the exam..can someone gimme some examples
> >
> >
> > thks
> > SK
> >
> > _______________________________________________________________________
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>
> --
> Keith Bizzell
> CCIE # 18798
>
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