On Sat, 12 Jun 2004, Peter Boyle wrote: > We're round robin sending to > 1024 IP's/MAC's on a subnet, > kernel version (2.4.20-31.9). Then you need to increase the neighbor cache size for this interface. See /proc/sys/net/ipv4/neigh/ and the neigh_alloc() function. Preferably both gc_thresh2 and gc_thresh3 should be larger than the number of hosts you communicate with on the subnet, or at a minimum and the difference between 2 & 3 should be larger than the number of new hosts you may try to communicate with per gc interval. gc_thresh1 does not seem to be used.. > It seems to me that the old arp entries should be evicted and > replaced rather than having neigh_alloc fail? It is hard to tell what is best in this border case.. evict known stable entries or fail new entries. Best action is to avoid it to begin with. Regards Henrik - : send the line "unsubscribe linux-net" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
