Jay send me a IM about your blog post ! Thanks again this is all what I need !
For the other members of the list : http://blog.ipexpert.com/2010/12/06/bpdu-filter-and-bpdu-guard/ Cheers ! 2011/1/20 Marko Milivojevic <[email protected]> > Hello Nicholas, > > Did you read (extensive) blog I wrote on this subject about a month ago? > > -- > Marko Milivojevic - CCIE #18427 > Senior Technical Instructor - IPexpert > > FREE CCIE training: http://bit.ly/vLecture > > Mailto: [email protected] > Telephone: +1.810.326.1444 > Web: http://www.ipexpert.com/ > > On Thu, Jan 20, 2011 at 16:56, Nicolas MICHEL <[email protected]> > wrote: > > Hey guys ! > > > > I'm having a language barrier here with the doc cd and I would like to > have > > your opinion since many people here speak english since they are born ;) > > > > Understanding BPDU Filtering > > > > The BPDU filtering feature can be globally enabled on the switch or can > be > > enabled per interface, but the feature operates with some differences. > > > > At the global level, you can enable BPDU filtering on Port Fast-enabled > > interfaces by using the *spanning-tree portfast bpdufilter default* > global > > configuration command. This command prevents interfaces that are in a > Port > > Fast-operational state from sending or receiving BPDUs. The interfaces > still > > send a few BPDUs at link-up before the switch begins to filter outbound > > BPDUs. You should globally enable BPDU filtering on a switch so that > hosts > > connected to these interfaces do not receive BPDUs.* If a BPDU is > received > > on a Port Fast-enabled interface, the interface loses its Port > > Fast-operational status, and BPDU filtering is disabled. * > > > > At the interface level, you can enable BPDU filtering on any interface by > > using the *spanning-tree bpdufilter enable* interface configuration > command > > without also enabling the Port Fast feature. This command prevents the > > interface from sending or receiving BPDUs. > > > > > > > > > > > > Does this means that a portfast only interface will loose his portfast > > status if a BPDU is received by the switch ? > > > > Or if the task requires to cancel the portfast status when hearing a BPDU > , > > you would have to use BPDUFilter with portfast ? > > > > > > > > Thanks and sorry for this 'dumb' question . > > > > > > -- > > Nicolas MICHEL > > Ingenieur Réseaux et Securité (CCNA/CCNP) > > _______________________________________________ > > For more information regarding industry leading CCIE Lab training, please > visit www.ipexpert.com > > > -- Nicolas MICHEL Ingenieur Réseaux et Securité (CCNA/CCNP) _______________________________________________ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com
