From: David Vasek (dvasek@satx.rr.com)
Date: Sat Mar 25 2006 - 23:54:04 GMT-3
Yev,
Did you ever find the answer to this question? I have been racking
by brain trying to come up with an answer but haven't found one yet.
-DV
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of Petr
Lapukhov
Sent: Wednesday, March 22, 2006 9:42 AM
To: Marcio Ferreira
Cc: Cisco certification
Subject: Re: STP timers tuning
Hi, Marcio.
No, i think that won't do it.
You see, forward-time is time interval for listening and learning statates -
separately.
That is, a port remains for <forward_time> seconds in listening state, and
another <forward_time> seconds in learning state.
A total of 2x forward-time, which is 10 in your case. And we need to get
port up & running in just 5 seconds.
To the extend of my knowledge, that could be accomplished only with
porfast/uplinkfast extensions, or RSTP protocol.
HTP
Petr
2006/3/22, Marcio Ferreira <marciotf@gmail.com>:
>
> hi, I was really thinking that the command "spanning-tree vlan XX
> forward-time 5" would do it.
>
> Can someone confirm if it really does? And if not, could please
> explain why?
>
> Thanks
>
> On 3/22/06, Petr Lapukhov <petrsoft@gmail.com> wrote:
> >
> > Just another thougth..Since classical STP is a little bit slow here.
> >
> > That 5 seconds interval reminds me of UplinkFast feature :)
> >
> > i takes about 1 to 5 seconds for alternative uplink to become fully
> > operational. Maybe that could answer your question?
> >
> > HTH
> > Petr
> >
> > 21.03.06, Evgeniy Voloshin <e.voloshin@equant.ru> NAPISAL(A):
> > >
> > > Yes,
> > >
> > > I understand that I must adjusted on root bridge some timers, but
> > > I
> need
> >
> > > to see some example, so I write how I can do it - reduce
> > > (learning
> and
> > > listening) interval to 5 sec?
> > > Of course I understand, that I can implement rapid STP on my
> > > switches, but I also want ot see some example about 5 seconds with
simple STP.
> > >
> > > ---
> > > Yev.
> > >
> > > Evgeniy Voloshin wrote:
> > >
> > > > Hi Group,
> > > >
> > > > I have a little questions about STP - how I can reduce (learning
> > > > and
> > > > listening) interval to 5 sec on some port, where I must to do
> > > > it? In global configuretion or on interface?
> > > >
> > > > I think that I must to change stp timers:
> > > > Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
> > > >
> > > > Hello to 1 sec, and Forward to 4 seconds - this is minimal value...
> > > >
> > > > Or I must change diameter on root bridge for this Vlan:
> > > > spanning-tree vlan XX root primary diameter 2-7 ?
> > > >
> > > > TIA!
> > > > ---
> > > > Yev.
> > > >
> > > >
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> > > --
> > > s UWAVENIEM,
> > > eWGENIJ.
> > >
> > >
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