Date: Mon, 5 Jan 2004 15:36:43 -0400 (AST) From: "Marc G. Fournier" <scrappy@hub.org> To: Luigi Rizzo <rizzo@icir.org> Cc: freebsd-net@freebsd.org Subject: Re: Odd behaviour on em0 device in -stable ... I think ... Message-ID: <20040105153544.W28998@ganymede.hub.org> In-Reply-To: <20040104232515.A49878@xorpc.icir.org> References: <20040104162220.S28998@ganymede.hub.org> <20040104231252.GA71628@pit.databus.com> <20040104232515.A49878@xorpc.icir.org>
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On Sun, 4 Jan 2004, Luigi Rizzo wrote: > i am partly lost on the details of your specific question, but > the symptoms do seem to suggest a stale ARP entry, which must be > in the router (if the switch had a stale entry in its MAC forwarding > table, you would have problems even with local pings, not only > remote ones). > > It is the OS that generates a gratuitous ARP every time you assign > an IP address (or alias) to a card, though i am not sure if it > sends one for each address assigned to the card, or just one for the > newly configured address -- the latter would not solve your problem. One of the odd things I'm finding with the em0 device, over the fxp0 device on the other machines, is that if/when I do alias (or -alias), the network hangs for a couple of seconds, and the following gets generated in /var/log/messages: Jan 4 16:09:17 neptune /kernel: em0: Link is up 100 Mbps Full Duplex as if it brought the device down, and then back up again ... is that normal? ---- Marc G. Fournier Hub.Org Networking Services (http://www.hub.org) Email: scrappy@hub.org Yahoo!: yscrappy ICQ: 7615664
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