True, if a portfast port bounces it doesn't trigger a TCN, which then doesn't trigger CAM table flushes.
Ken Matlock Network Analyst 303-467-4671 [email protected] -----Original Message----- From: Gert Doering [mailto:[email protected]] Sent: Wednesday, May 23, 2012 2:25 PM To: Matlock, Kenneth L Cc: Chris Gotstein; Gert Doering; [email protected] Subject: Re: [c-nsp] Lot of input errors on a NPE-G1 interface Hi, On Wed, May 23, 2012 at 02:04:58PM -0600, Matlock, Kenneth L wrote: > Think of it this way. What does Portfast do? It allows you to skip > from blocking to forwarding, bypassing listening and learning states. Plus, it changes TCN behaviour for rapid-pvstp for flaps on that port. That's one of the often-overlooked side effects. gert -- USENET is *not* the non-clickable part of WWW! //www.muc.de/~gert/ Gert Doering - Munich, Germany [email protected] fax: +49-89-35655025 [email protected] *** Exempla Confidentiality Notice *** The information contained in this message may be privileged and confidential and protected from disclosure. If the reader of this message is not the intended recipient, or an employee or agent responsible for delivering this message to the intended recipient, you are hereby notified that any other dissemination, distribution or copying of this communication is strictly prohibited. If you have received this communication in error, please notify me immediately by replying to the message and deleting it from your computer. Thank you. *** Exempla Confidentiality Notice *** _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
