[115370] in North American Network Operators' Group
Re: Unicast Flooding
daemon@ATHENA.MIT.EDU (Lee)
Thu Jun 18 12:30:15 2009
In-Reply-To: <295271b90906180724y2d899d42x76809c255a6d449b@mail.gmail.com>
Date: Thu, 18 Jun 2009 12:28:44 -0400
From: Lee <ler762@gmail.com>
To: Brian Shope <blackwolf99999@gmail.com>
Cc: nanog@nanog.org
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
On 6/18/09, Brian Shope <blackwolf99999@gmail.com> wrote:
> Thanks for all the good info..
>
> So it sounds like changing my CAM timeout to 4 hours is the best
> suggestion. Anyone have any problems when implementing this?
Not as long as all the user ports have portfast enabled. Without
portfast, when a port goes up or down it causes a topology change
notification which sets the fast aging timer and the cam table entries
age out in something like 15 seconds.
Regards,
Lee
