Brian Buhrow <buh...@nfbcal.org> writes: > Hello. The ARP cache timeout used to be 1200 seconds or 20 minutes, > hard coded. Now, it > looks like it's either 1200 seconds or 300 seconds, I'm not sure after a > quick romp through the > kernel source. In any case, The fact that you're getting regular delays on > your pings suggests > there is a delay between the time when the arp cache times out and when it > gets refreshed. As
However, a missing arp cache entry should result in at most a 1 RTT delay over the local net, and it really should not be a big deal. However, tcpdump and analysis is always a good idea, to turn theories in to observations.
