From: Ozgur Guler (Garanti Teknoloji) (OzgurG@garanti.com.tr)
Date: Tue Sep 16 2003 - 12:12:07 GMT-3
you can also use bpduguard feature.
from doc cd:
"Use the BPDU guard feature in a service-provider network to prevent an access port from participating in the spanning tree. "
"Enabling BPDU filtering on an interface is the same as disabling spanning tree on it and can result in spanning-tree loops."
Ozgur
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of Ken.Farrington@barclayscapital.com
Sent: Monday, September 15, 2003 9:43 PM
To: ccielab@groupstudy.com
Subject: RE: Disable STP per port.
many thx indeed. beers in the post :)
-----Original Message-----
From: Rob Laidlaw [mailto:laidlaw@consecro.com]
Sent: 15 September 2003 19:27
To: Ken.Farrington@barclayscapital.com; ccielab@groupstudy.com
Subject: Re: Disable STP per port.
The reasoning that I have found behind this is that if you had enabled bpdu
filtering in global mode and then hook that switch up to another switch, the
port that connects the switches should be running spanning tree and thus the
switch will remove the filter and port fast automatically for that port
rather then require the admin to change the configuration. The
documentation isn't as clear, but when this occurs, it only changes that
port, the rest of the switch stays on port-fast with the bpdu filter.
Rob
----- Original Message -----
From: <Ken.Farrington@barclayscapital.com>
To: <ccielab@groupstudy.com>
Sent: Monday, September 15, 2003 1:17 PM
Subject: RE: Disable STP per port.
> One thing?
>
> "If a
is received on a Port Fast-enabled port, the port loses its
Port
> Fast-operational status, and BPDU filtering is disabled."
>
>
> Does this mean that if the port does receive a BPDU, it disables the BPDU
> filter?
>
> Kinda defaeats the object? I will test in the lab tomorrow, but if you
have
> tested this, would much appriciate the feedback?
>
>
> -----Original Message-----
> From: Rob Laidlaw [mailto:laidlaw@consecro.com]
> Sent: 15 September 2003 18:40
> To: Daniel Sheedy; ccielab@groupstudy.com
> Subject: Re: Disable STP per port.
>
>
>
http://www.cisco.com/en/US/products/hw/switches/ps646/products_configuration
> _
> guide_chapter09186a00800c6ed9.html#xtocid4
>
> on the interface enter "spanning-tree bpdufilter enable" This is the same
> as
> disabling spanning tree on the port
>
> Rob
>
> ----- Original Message -----
> From: "Alec" <clapun@graduate.hku.hk>
> To: "Daniel Sheedy" <dansheedy@gmx.net>; <ccielab@groupstudy.com>
> Sent: Monday, September 15, 2003 12:16 PM
> Subject: Re: Disable STP per port.
>
>
> > how about to try bpdu filter on that port ?
> > ----- Original Message -----
> > From: "Daniel Sheedy" <dansheedy@gmx.net>
> > To: <ccielab@groupstudy.com>
> > Sent: Tuesday, September 16, 2003 12:53 AM
> > Subject: Re: Disable STP per port.
> >
> >
> > > Hi Ken,
> > >
> > > I am fairly sure that you can only shut down STP per vlan. Are you
> trying
> > > to achieve something with turning off STP on one port?
> > >
> > > Daniel Sheedy
> > >
> > >
> > > ----- Original Message -----
> > > From: <Ken.Farrington@barclayscapital.com>
> > > To: <ccielab@groupstudy.com>
> > > Sent: Monday, September 15, 2003 6:09 PM
> > > Subject: Disable STP per port.
> > >
> > >
> > > > Can anyone tell me if it is possible on a cat3550 to disable STP on
a
> > per
> > > > port basis. I think you can only do this on a per VLAN basis.
> > > >
> > > > STP portfast does not disable STP.
> > > >
> > > > Many thx.
> > > > Ken
> > > > ________________________________________________________________
> > > > Ken Farrington
> > > > Global Networks, Barclays Capital, 5 The North Colonnade, Canary
> > > > Wharf, London, E14 4BB
> > > > * Tel : 020 7773 3550
> > > > * Mob : 07768-866655
> > > > * ken.farrington@barcap.com
> > > >
> > > >
> > > >
> > > >
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