Date: Thu, 10 Jul 2003 15:02:24 -0400 (EDT) From: "Dan Mahoney, System Admin" <danm@prime.gushi.org> To: isp@freebsd.org, <hackers@freebsd.org> Subject: FreeBSD Router and ARP (fwd) Message-ID: <20030710150203.S9205-100000@prime.gushi.org>
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I have a lan of maybe 200 nodes where a BSD box is performing as the core router (with cisco's doing line-connectivity). It is all switched, with no VLAN in place. Each machine (in general) has its own subnet. Most are /29's, some are as large as a /25. Each subnet has a single gateway ip configured on the router. This is so that each machine can have a gateway within its own subnet. This works reasonably well, except that when running ethereal on one of the local machines, I discovered an alarming rate of ARP requests coming out from the MAC of the BSD router. Considering the arp is supposed to be cached for 20 minutes or more until something different is heard, I shouldn't see five or six requests within two seconds. I don't see this when routing with (say) a Cisco router. Is there some reason for this? TCPDumps from my local desktop available upon request. -Dan Mahoney -- "There is no right and wrong, there is only fun and boring." -Fisher Stevens, "Hackers" --------Dan Mahoney-------- Techie, Sysadmin, WebGeek Gushi on efnet/undernet IRC ICQ: 13735144 AIM: LarpGM Site: http://www.gushi.org ---------------------------
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