Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!dali.cs.montana.edu!uakari.primate.wisc.edu!sdd.hp.com!elroy.jpl.nasa.gov!lll-winken!ptavv.llnl.gov!oberman From: oberman@ptavv.llnl.gov Newsgroups: comp.dcom.sys.cisco Subject: Re: Parallel routers running proxy-arp Message-ID: <1991Apr29.080141.1@ptavv.llnl.gov> Date: 29 Apr 91 15:01:41 GMT References: <34622@boulder.Colorado.EDU> Sender: usenet@lll-winken.LLNL.GOV Lines: 18 Nntp-Posting-Host: ptavv.llnl.gov In article <34622@boulder.Colorado.EDU>, alan@curta.cc.columbia.edu (Alan Crosswell) writes: > To concur about proxy-arp. SunOS and IBM VM TCP/IP arp implementations > are broken. They never age out. We had tried this set up. Our fix on > the unix side is to have a cron job that runs every 5 minutes or so and > explicity flush the arp cache. I'm not so sure of this. The problem is that if an ARP entry is accessed, it resets the timeout. And there is no way to know if the access pointed to the right place. So any entry that gets regular access NEVER times out. But it's an ARP problem, not anything wrong with SunOs. R. Kevin Oberman Lawrence Livermore National Laboratory Internet: oberman@icdc.llnl.gov (415) 422-6955 P.S. Who would ever believe me saying anything to defend SunOs? Disclaimer: Don't take this too seriously. I just like to improve my typing and probably don't really know anything useful about anything.