Get a sniffer trace or debug arp. We refresh every 3 hrs 59 min unless you have tuned the arp timeout value.
That is a unicast arp to each arp entry and it resets the timer. Nothing to worry about. If you are losing the arps for some other reason a sniffer trace is the way to go. On Fri, Mar 07, 2008 at 10:40:07AM -0500, Jeff Fitzwater wrote: > There are two things that the router does with its arp table... > 1 It clears each hosts arp entry at some age interval, which can be > changed. > 2 It periodically updates its arp-cache by sending out a unicast arp > for each arp entry it has. > > The periodic refresh might be what you are seeing. > > > Without more details that's all I know. > > > Jeff Fitzwater > OIT Network Systems > Princeton University > On Mar 7, 2008, at 10:27 AM, Andrey O.Sokolov wrote: > > > > > > > Good day! > > > > I have cisco7606 with sup32, IOS 12.2(33)SRB2, c7600s3223_rp- > > ADVIPSERVICESK9-M > > > > Periodically (sometimes time some minutes) spontaneously cleared > > arp-table on this device, and I have > > big broadcast flow on my network. > > > > What is this? > > Could someone help me solve this problem? > > > > -- > > _______________________________________________________________ > > WBR, > > ***AOS224-RIPE*** mailto:[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/ > > _______________________________________________ > cisco-nsp mailing list [email protected] > https://puck.nether.net/mailman/listinfo/cisco-nsp > archive at http://puck.nether.net/pipermail/cisco-nsp/ _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
