From: davidytk (davidytk@netvigator.com)
Date: Wed Nov 28 2007 - 14:38:39 ART
Hi Backbone
When you globally configure spanning-tree portfast bpduguard default, it is
only enable the bpguguard global. This command affect the access-port with
have portfast function. You need to enable spanning-tree portfast in the
interface mode also.
http://www.cisco.com/en/US/docs/switches/lan/catalyst3750/software/release/1
2.2_35_se/configuration/guide/swstpopt.html#wp1032048
As trunk does not enable portfast function, it is not affected. You can see
the following link (access1 switch configuration). It has trunk link and
spanning-tree portfast bpduguard default together.
http://www.cisco.com/en/US/products/hw/switches/ps708/products_configuration
_example09186a00807b075f.shtml
I have tried this command in real-life network. It works with trunk and "
spanning-tree portfast bpduguard default" together.
Thanks
Best Regards
David
-----Original Message-----
From: backbone systems [mailto:backbone.systems@gmail.com]
Sent: Thursday, November 29, 2007 12:31 AM
To: davidytk
Subject: Re: bpdugaurd
David that is an important point. i tested it and the command does not
effecct the trunk ports.
CAn u provide a link where i can read about that spanning-tree
bpduguard enable coomand on interfaces does not effect the trunk port
backbone
On Nov 28, 2007 5:43 PM, davidytk <davidytk@netvigator.com> wrote:
> Err-disable means your switch receive BPDUGUARD.
>
> You need to disable the bpduguard in the access port to avoid this happen.
>
> When you type bpduguard in the global, it is only affected the access-port
> only, it will not have any effect on trunk port as trunk port will
override
> the bpduguard command.
>
> Thanks
>
> Best Regards
> David
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
>
> M_A_Jones@Dell.com
> Sent: Wednesday, November 28, 2007 9:57 PM
> To: darbyweaver@yahoo.com; narbikk@gmail.com
> Cc: mounir.ccieisa@gmail.com; asim.mz@gmail.com; ccielab@groupstudy.com;
> Daniel_Steyn@Dell.com
> Subject: RE: bpdugaurd
>
> "Proctor!"
>
> "Somethings wrong with my switch, whats this err-disable???
>
> "When I try the no shut command it doesn't work, I assure you it's a bad
> switch!"
>
> :)
>
> Michael Jones
> Network Engineer
> Global Network Operations
> Dell Inc. | Information Technology
> W. 512.723.3268 | C. 512.966.6908
>
> -----Original Message-----
> From: Darby Weaver [mailto:darbyweaver@yahoo.com]
> Sent: Tuesday, November 27, 2007 9:38 PM
> To: Narbik Kocharians; Jones, Michael A - Authorized Dell Representative
> Cc: mounir.ccieisa@gmail.com; asim.mz@gmail.com; ccielab@groupstudy.com
> Subject: Re: bpdugaurd
>
> Now...
>
> Imagine that this global command was turned on in your lab at the
> outset...
>
> Hmmm....
>
> A little havoc to the unwary? Not much to a seasoned careful eye, but
> maybe to those not so careful, perhaps?
>
>
> --- Narbik Kocharians <narbikk@gmail.com> wrote:
>
> > At the global level you can enable BPDUguard by using the
> > "Spanning-tree portfast bpduguard default", this will shut down the
> > portfast enabled ports that receive BPDUs.
> >
> > This could also be done at the interface level, if its enabled at the
> > interface level then, you don't need to enable portfast at the
> > interface level. Once again the interface will transition into
> > err-disable mode if that given port receives BPDUs.
> >
> > On 11/27/07, M_A_Jones@dell.com <M_A_Jones@dell.com>
> > wrote:
> > >
> > > If you enable BPDU Guard on every interface, isnt
> > that Global???
> > >
> > > :)
> > >
> > >
> > > Michael Jones
> > > Network Engineer
> > > Global Network Operations
> > > Dell Inc. | Information Technology
> > > W. 512.723.3268 | C. 512.966.6908
> > >
> > > -----Original Message-----
> > > From: nobody@groupstudy.com
> > [mailto:nobody@groupstudy.com] On Behalf Of
> > > Mounir Mohamed
> > > Sent: Tuesday, November 27, 2007 12:03 PM
> > > To: Asim Zafar
> > > Cc: Cisco certification
> > > Subject: Re: bpdugaurd
> > >
> > > Dear Asim,
> > >
> > > BPDU can not be enabled globally, but you can
> > enable BPDUGUARD with
> > > portfast, in this case the command only effect all
> > ports has portfast
> > > enabled.
> > >
> > > You can enable portfast per interface or globally
> > by use
> > > SW1(config)#spanning-tree portfast default
> > >
> > > If you asked to enable BPDUGUARD on all
> > access-ports you can do it with
> > > the below tow commands
> > >
> > > SW1(config)#spanning-tree portfast default
> > SW1(config)#spanning-tree
> > > portfast bpduguard default
> > >
> > > You can verify it by:
> > >
> > > SW1#show spanning-tree interface f0/1 detail | inc
> > Bpdu|portfast
> > > The port is in the portfast mode by default
> > > Bpdu guard is enabled by default
> > >
> > > Best Regards,
> > > Mounir Mohamed
> > >
> > > On Nov 27, 2007 2:03 PM, Asim Zafar
> > <asim.mz@gmail.com> wrote:
> > >
> > > > Hi Techs,
> > > >
> > > >
> > > > If I implement BPDUGAURD on global config mode
> > will it be implemented
> > > > on all access ports or it will be implemented on
> > all ports regardless
> > > > access, trunk on the switch, if this is true
> > then will we have to
> > > > configure them separately on all ports.
> > > >
> > > >
> > > > --
> > > > Thanks & Regards,
> > > >
> > > > Asim Zafar
> > > >
> > > >
> >
> ______________________________________________________________________
> > > > _ Subscription information may be found at:
> > > > http://www.groupstudy.com/list/CCIELab.html
> > > >
> > >
> > >
> > >
> > > --
> > > Best Regards,
> > > Mounir Mohamed
> > >
> > >
> >
> _______________________________________________________________________
> > > Subscription information may be found at:
> > > http://www.groupstudy.com/list/CCIELab.html
> > >
> > >
> >
> _______________________________________________________________________
> > > Subscription information may be found at:
> > > http://www.groupstudy.com/list/CCIELab.html
> > >
> >
> >
> >
> > --
> > Narbik Kocharians
> > CCIE# 12410 (R&S, SP, Security)
> > CCSI# 30832
> > www.Net-WorkBooks.com
> >
> >
> _______________________________________________________________________
> > Subscription information may be found at:
> > http://www.groupstudy.com/list/CCIELab.html
>
> _______________________________________________________________________
> Subscription information may be found at:
> http://www.groupstudy.com/list/CCIELab.html
>
> _______________________________________________________________________
>
> Subscription information may be found at:
> http://www.groupstudy.com/list/CCIELab.html
This archive was generated by hypermail 2.1.4 : Sat Dec 01 2007 - 06:37:31 ART