Re: Port Priority

thanks Darby... i will lab it up now and sure will compare with my results.Your
help is always appreciated.

Best Regards,

On Mon, Sep 7, 2009 at 4:41 AM, Darby Weaver <darby.weaver_at_gmail.com> wrote:

> Quote from InternetworkExpert:
>
> "To influence which port is elected the root port, the two user
> configurable values to change are port cost and port priority. Changing
> port cost will effect both the local bridge and all downstream bridges.
> Changing the port priority will only affect the directly connected
> downstream bridge. Keep in mind that port priority is only taken into
> account if there is a tie in both cost and bridge-ID (a tie in bridge-ID
> implies that a bridg has multiple connections to the sme upstream bridge.)"
>
>
>
>
>
> On Sun, Sep 6, 2009 at 9:32 PM, Darby Weaver <darby.weaver_at_gmail.com>wrote:
>
>> Hmm...
>>
>> The port priority affects the ports directly connected to the upstream
>> switch.
>>
>> Here's something to help you out step-by-step:
>>
>> http://www.cciecandidate.com/?p=585
>>
>> Think about what "port"-priority does and what it affects versus "cost".
>>
>> Cost is cumulative and thus additive.
>>
>> Port-Priority seeks to affect one port over another port. Remember
>> Port-Priorty is the tie-breaker.
>>
>>
>> Port-priority is set on an upstream switch to influence a downstream
>> switch, however it is at the bottom of the list and only gets selected if
>> everything else is equal.
>>
>>
>>
>>
>>
>> Does this help?
>>
>>
>>
>>
>>
>> On Sun, Sep 6, 2009 at 9:13 PM, Nadeem Rafi <nrafia_at_gmail.com> wrote:
>>
>>> Hi GS,I understand that port priority will effect only down stream, and
>>> should be configured on up stream devices. I just want to know does it
>>> effect all the downstream switches or only a directly attached down
>>> stream
>>> switch.
>>>
>>> Thanks in advance for any input.
>>>
>>> Best Regards,
>>>
>>>
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>>
>>
>> --
>> Darby Weaver
>> Network Engineer
>>
>> 407-802-7394
>> darbyweaver_at_yahoo.com
>>
>
>
>
> --
> Darby Weaver
> Network Engineer
>
> 407-802-7394
> darbyweaver_at_yahoo.com

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Received on Mon Sep 07 2009 - 04:44:25 ART