Arp timers are central, bridge timers are more distributed Arp timers I believe are specific to svi/bvi/routed interfaces, bridge timers I believe are more global and may not be vlan specific
Those 2 items would lead me to think arp timers would be the best place to adjust Thanks -----Original Message----- From: Mikael Abrahamsson [mailto:[email protected]] Sent: Monday, January 21, 2013 11:18 AM To: Aaron Cc: [email protected] Subject: Re: [c-nsp] unknown unicast flooding - particularly regarding fhrp's On Mon, 21 Jan 2013, Aaron wrote: > How does constant unknown unicast flooding affect networks? Better > yet, how to design in mitigation ? is it all about lower arp timeouts > below > 300 secs so to artificially prop-up bridge tables and keep them fresh? > My goodness that's making arp very busy. Make sure your arp timeouts are aligned with your bridge timeouts (keep arp timers lower than bridge timeouts). Easiest way to do it is (as you say) lower arp timers. Another way is of course to raise bridge timeouts. -- Mikael Abrahamsson email: [email protected] _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
