On Thursday 25 April 2002 10:32 am, Ramin Alidousti wrote: Ramin,
As far as connecting hosts to that particular machine, i would say hundreds. I was thinking about compiling the kernel with ARP Daemon enabled. What do you think ? Paul > This is from the kernel config. It might be your problem. How many > hosts do you have on your internal segment? > > Ramin > > ---- > CONFIG_ARPD: > > Normally, the kernel maintains an internal cache which maps IP > addresses to hardware addresses on the local network, so that > Ethernet/Token Ring/ etc. frames are sent to the proper address on > the physical networking layer. For small networks having a few > hundred directly connected hosts or less, keeping this address > resolution (ARP) cache inside the kernel works well. However, > maintaining an internal ARP cache does not work well for very large > switched networks, and will use a lot of kernel memory if TCP/IP > connections are made to many machines on the network. > > If you say Y here, the kernel's internal ARP cache will never grow > to more than 256 entries (the oldest entries are expired in a LIFO > manner) and communication will be attempted with the user space ARP > daemon arpd. Arpd then answers the address resolution request either > from its own cache or by asking the net. > > This code is experimental and also obsolete. If you want to use it, > you need to find a version of the daemon arpd on the net somewhere, > and you should also say Y to "Kernel/User network link driver", > below. If unsure, say N. > ---- > > On Thu, Apr 25, 2002 at 10:04:16AM -0500, hyooga wrote: > > Greeting :) > > > > Lately, i have been seeing this in my log file "Neighbour table > > overflow." I have looked through newsgroup and advised to check loopback > > interface but there is nothing wrong. Check tcpdump and found unanswered > > arp requests. > > > > I am running 2.4.18 with iptables 1.2.5 with ip_connect_max set to 8192 > > and running 1gig ram. > > > > Could anyone please lead me to the right place. > > Thanks in advanced > > > > Paul
